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  • 专利说明
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    • 专利摘要:
    systems and methods for pipe couplings. the present invention relates to a coupling arrangement that includes a gasket seal (40) and a housing (12, 14) having a first side face (100) for receiving a first pipe segment (4) and a second face side (102) to receive a second pipe segment (2), the second side face (102) being spaced from the first side face (100) to define a median axis (aa) of the housing. an internal surface (22) of the housing defines a cavity for engaging and housing a gasket seal (40) arranged around the first and second pipe segments. the gasket seal (40) includes a peripheral surface (48) and an inner surface (50) which can include features that engage both the housing and the pipe segments to form a tight pipe joint assembly.
    公开号:BR112012010104B1
    申请号:R112012010104-8
    申请日:2010-10-25
    公开日:2020-09-24
    发明作者:Sandra M. Lippka
    申请人:Tyco Fire Products Lp；
    IPC主号:
    专利说明:

    [0001] [0001] These international applications claim priority benefit for Provisional Patent Application 61 / 255,409, filed October 27, 2009, entitled "Tube Coupling Systems and Methods" and which is incorporated by reference in its entirety. TECHNICAL FIELD
    [0002] [0002] The present invention generally relates to adjustments for tubes and, more specifically, devices and methods for the coupling of tubes or pipes for transporting fluids. SUMMARY OF THE INVENTION
    [0003] [0003] Coupling arrangements and their components are provided to join segments of tubes or pipes. In a preferred embodiment, a coupling is provided that includes a housing; and a gasket arranged in the housing to form a seal over a gasket on the tube. The gasket is an annular or ring-type body having a first side face and a second side face spaced from the first side face, in order to define a median axis between them. An outer or peripheral surface of the gasket and an internal surface of the gasket extending between the first and second lateral surfaces, so as to be cut along the median axis. The inner surface preferably defines a first sealing lip and a second sealing lip. The first and second sealing edges are preferably arranged around the median axis in order to define a first transition portion of the inner surface extending between the first sealing edge and the median axis and a second transition portion between the second sealing edge and the median axis. The first and second transition portions extend towards the sealing edge towards the median axis and the peripheral wall so that each preferably defines a positive slope. More preferably, the inner surface of the gasket defines a central leg extending along the median axis. In addition, the transition portions provide a decrease in the thickness of the gasket body in the direction from the sides lateral to the median axis or the central leg.
    [0004] [0004] Another preferred gasket is provided that includes a first side face, a second side face spaced from the first side face in order to define a median axis between them. The gasket includes a peripheral surface and an inner surface, each of which extends between the first and second side surfaces so as to be cut along the median axis. The peripheral surface preferably defines a profile having a pair of rounded end portion arranged around the median axis with a central portion extending between the two rounded end portions, the rounded end portions defining the maximum diameter of the gasket. In one embodiment, the central portion defines an arched profile that cuts through the median axis. Alternatively, the profile of the central portion is substantially linear. In another preferred embodiment, the inner surface of the gasket defines a first sealing lip and a second sealing lip, the first and second sealing lips being arranged on the median axis, the inner surface including a transition portion extending in the direction of one of the first and second sealing edges towards the median axis and the peripheral wall in order to define a positive slope.
    [0005] [0005] A preferred housing for use in a preferred coupling arrangement includes a first side face to receive a first pipe segment and a second side face to receive a second pipe segment. The second side face is spaced from the first side face to define a median axis of the housing. The housing includes an inner surface that defines a cavity for engaging the gasket and extends between the first side face and the second side face in order to define an internal diameter profile that decreases in a direction from the side face to the axis median to define a point of contact diameter that engages the gasket. A preferred gasket arranged in the housing cavity has a diameter that is larger than the diameter of the contact point. In a preferred embodiment, the inner surface defines a median diameter of the housing that is not greater than the point of contact diameter.
    [0006] [0006] In a preferred embodiment of the housing, the inner surface includes a side wall portion; a rear wall portion, and a transition portion between the side wall portion and the bottom wall portion. The transition portion preferably defines a negative slope towards the side lateral to the median axis and includes a first rounded portion, a second rounded portion with a straight line segment extending between the first and second rounded portions. The straight line segment defining the preferred negative slope.
    [0007] [0007] A preferred method of sealing a tube gasket is provided and includes radially compressing a conical inner surface of a housing component over a gasket arranged within a cavity defined by the inner surface. The gasket has a median axis, a flexion point, and a linear segment between the flexion point and the median axis. The linear segment preferably defines a positive slope towards the median axis. The preferred method further includes locating a notch defined by the conical surface between the median axis and the point of flexion a lower point so that the compression moves a lateral portion of the gasket against a side wall of the housing.
    [0008] [0008] Another preferred coupling includes a gasket and a housing having a first side face and a second side face spaced from the first side face to define a median axis of the housing. The housing includes an internal surface that defines a cavity for engaging the gasket and extends between the first side face and the second side face in order to define an internal diameter profile that decreases to at least a portion between at least one face lateral and the median axis. The inner surface includes a side wall portion, a rear wall portion, and a transition portion between the side wall portion and the bottom wall portion. The transition portion preferably defines a negative slope in the direction from a side face to the median axis, and includes a first rounded portion, a second rounded portion with a straight line segment extending between the first and second rounded portions . The straight line segment defines a negative slope with the first rounded portion having a center of curvature disposed on one side of the straight line, the second rounded portion having a center of curvature disposed on the other side of the straight line, the first rounded portion defining a first cavity depth of the housing and the second rounded portion defining a second rounded cavity less than the first cavity depth, the rear wall portion defining a third cavity depth being equal to the second cavity depth. A preferred gasket includes a first side face and a second side face spaced from the first side face to define a median axis of the gasket. The preferred gasket further includes an outer surface and an inner surface, extending between the first and second side surfaces, so as to be cut along the median axis. The inner surface defines a first sealing lip and a second sealing lip, the first and second sealing lip being arranged on the median axis. The inner surface includes a transition portion extending towards the sealing edge towards the median axis and the peripheral wall, in order to preferably define a positive slope. The outer surface defines a profile including a pair of raised end portions arranged around the median axis of the gasket with a central portion disposed between them. The central portion is preferably radially into the enlarged end portions to engage the rear wall portion of the housing. BRIEF DESCRIPTIONS OF THE DRAWINGS
    [0009] [0009] The attached drawings, which are incorporated into this document and form part of this report, illustrate exemplary modalities of the invention, and, together with the description given above, serve to explain the characteristics of the invention.
    [0010] [00010] Figure 1A is a schematic diagram in perspective of a preferred coupling arrangement.
    [0011] [00011] Figure 1B is an end view of the coupling arrangement of figure 1A.
    [0012] [00012] Figure 2A is a schematic diagram in perspective of another preferred coupling arrangement.
    [0013] [00013] Figure 2B is an end view of the coupling arrangement of figure 2A.
    [0014] [00014] The figure. 3A is a partial cross-sectional view of a preferred coupling arrangement in an uncompressed configuration.
    [0015] [00015] Figure 3B is the coupling arrangement of figure 3A in a compressed configuration.
    [0016] [00016] Figure 4A is a preferred housing component for use in the arrangements of figures 1A-1B and figures 2A-2B. Figure 4B is another preferred housing component for use in the arrangements of figures 1A-1B and figures 2A- 2B.
    [0017] [00017] Figure 5A is a preferred gasket for use with the housing component of figure 4A.
    [0018] [00018] Figure 5B is a preferred gasket for use with the housing component of figure 4B.
    [0019] [00019] Figure 5C is another preferred gasket for use with the arrangement of figures 3A-3B.
    [0020] [00020] Figure 6A is a partial cross-sectional view of another embodiment of a coupling arrangement.
    [0021] [00021] Figure 6B is a partial cross-sectional view of another embodiment of a coupling arrangement. DETAILED DESCRIPTION
    [0022] [00022] Figures 1A and 1B and figures 2A and 2B show the formation of a preferred pipe or pipe joint assembly using a preferred coupling arrangement 10. In the preferred joint assembly, the pipe or pipe end segments piping 2, 4 are aligned axially along an axis of the pipe XX and a gasket 40 is arranged over the end segments 2, 4. The pipe or pipe may be of copper, steel or other tubular material to form a joint assembly . A preferred coupling housing having at least two housing components 12, 14 is engaged over the gasket 40. The housing components can be separate components, as seen in figure 1A or, alternatively, can be pre-assembled in a coupled arrangement, for example, in the articulated type device shown in figures 2A and 2B. A preferred articulated coupling for use in the coupling arrangement is shown and described in US Provisional Order No. 61/255, 351, filed October 27, 2009, entitled "Articulation Coupling Systems and Methods", and which is incorporated by reference in your totality. The housing components can be identical in structure, in order to reflect each other over XX or alternatively they can be configured differently, as long as they are configured to engage or align with each other and form the complete coupling housing on the gasket 40. Furthermore, the coupling housing can be formed by more than two components, with the proviso that the components can be coupled together to effectively engage the gasket 40 to form the pipe joint, as seen, for example, in US patent 6,139,069 which is incorporated herein by reference in its entirety.
    [0023] [00023] Generally, each of the housing components 12, 14 has a first end 16, a second end 18 with a preferably arched segment 20 extending between the first and second ends 16, 18 for engagement with the gasket 40. Depending on of the number of components that make up the housing, the segments can be semicircular, quarter circle or define another arc length. The ends 16, 18 are preferably configured as screw buffer extensions having through holes in which the fasteners 19 are arranged to hold and / or couple the housing components 12, 14 to each other. The pipe engaging segments 20 further include an inner surface 22 that defines a gasket cavity 24 for engaging and housing the gasket 40.
    [0024] [00024] In order to complete the formation of the pipe joint, the housing components 12, 14 are arranged on the gasket 40. To form the fluid tight seal, the fasteners are tightened to remove the housings 12, 14 together . As the components 12, 14 are removed together, the inner surface 22 of the components compresses the gasket 40 to form a fluid-tight seal. The complete assembly defines the central axis C-C of the coupling arrangement 10, which is coaxially aligned with the tube axis X-X.
    [0025] [00025] Uncompressed and compressed views of the preferred pipe joint assembly are shown respectively in figure 3A and figure 3B to illustrate the surface contact engagement between the inner surface 22 of the housing component 12 and the gasket 40. Preferably, the coupling arrangement 10 is symmetrical about a median axis AA that extends perpendicular to the central axis CC of the coupling 10. Alternatively, the arrangement may be asymmetric, for example, as is the case with a reduced pipe joint arrangement. Preferred housing 12 and its inner surface 22 define a preferred surface profile 106. Surface profile 106 preferably includes a portion that tapers inwardly in the direction of the median axis AA to define a decreasing inner diameter and form one or more notches 30 arranged around the median axis AA. The notches 30 can alternatively be defined by triangles formed on the inner surface 22 on the median axis AA where the vertices extend radially into the cavity 24. With reference to the compressed view of figure 3B, the inner surface 22 and its profile 106 engages the peripheral surface of the gasket 40 by applying a radial compression force. The notch 30 and its tapered surface include a point P0 that defines an inner diameter of the tapered inner surface 22 which is less than the diameter of the gasket 40 at the point where the point P0 makes contact. Consequently, in the formation of a fluid-tight seal at the pipe joint with the coupling arrangement 10, the notch 30 deforms the gasket 40 at the point of contact P0, preferably radially in the direction of the CC axis Due to an internal channel 58 of the gasket 40, the side portion of the gasket 40 bends at a point P1 along the profile of the channel 58 to form the sealed engagement with the outer surface of the pipe segment 2, 4 and the side portion of the gasket 40 moves laterally against the inner surface 22 of the housing 12. The pressure of the internal fluid in the pipe joint can move a central portion of the gasket 40 radially outwardly, to contact the inner surface 22 of the housing in the deepest part of the gasket cavity 24 to further stabilize the position of the gasket 40 within the cavity 24. For the preferred coupling arrangement 10, the formation of the notch 30 preferably locates the contact point P0 mediumly into the gasket flexion point P1 with respect to to the median axis A-A so that the contact point P0 is median of the flexion point P1. Furthermore, the point P0 is preferably located so as not to minimize or negate the internal fluid pressure to move the gasket radially inward against the coupling housing.
    [0026] [00026] Figure 3A shows a general cross-sectional view of the preferred housing component 12 having a first side face 100 and a second side face 102, which define between them the median axis AA of the housing component 12. Extending between the first and second side faces are the body of the component 12 which includes a peripheral surface profile 104 (seen in Figures 4A and 4B as 104 'and 104 ") and a preferred inner surface profile 106 of the inner surface 22. The inner surface 106 preferably includes for each side of the median axis AA, a pipe engaging portion 108 (shown in Figures 4A and 4B as 108'and 108 "), a side wall portion 110, a rear wall portion 112, and a transition portion 114 extending between the side wall and rear wall portions 110, 112. The pipe engaging portion 108 engages directly on the outer surface of the pipe segment in the pipe joint assembly and preferably extends it is substantially linearly parallel to the central axis C-C of the coupling arrangement 10. The side wall portion 110 is contiguous with the pipe engaging portion 108 to define a surface for engagement with the gasket side wall 40 in the joint assembly. The side wall portion 110 is also preferably substantially linear, defining a preferably obtuse angle α with the line parallel to the axis A-A. More preferably formed between the pipe engaging portion 108 and the side wall portion 110 is a surface transition 109, which can either be rounded off defining a radius of curvature or more preferably defines a step transition between the pipe engaging portion 108 and the side wall portion 110.
    [0027] [00027] The rear wall portion 112 of the inner surface profile 106 preferably defines the inner surface portion of the inner housing 22, which supports a median portion of the gasket 40 and, more preferably, defines the deepest portion of the gasket cavity 24. Alternatively, a rear wall 112 may be located at a depth equivalent to the contact point P0 of the notch 30, or at a shallower depth than P0, but deeper than the PI point of the gasket. In preferred embodiment 12, the rear wall portion 112 of the inner surface profile 106 is substantially linear or planar extending in a direction parallel to the central axis CC of the coupling 10. Alternatively, the rear wall portion 112 may be a single deeper contact of the inner surface104 for engagement with the gasket 40. In addition, alternatively, the rear wall portion 112 can define a segment of the inner surface 106 that defines multiple points of contact for the gasket 40, in which the multiple contact points define the deepest point of the gasket cavity that engages the gasket 40.
    [0028] [00028] Extending contiguously between the rear wall portion 112 and the side wall portion 110 of the inner surface profile 106 is the transition portion 114. The transition portion 114 preferably includes a first rounded end 114a that defines a radius of curvature contiguous with the side wall portion 110, and a second rounded end 114b defining a radius of curvature contiguous with the rear wall portion 112. Alternatively, the ends 114a, 114b may be more of a transition type step. Between ends 114a, 114b the transition portion 114 preferably defines the notch 30 of the inner surface 22 described above. Preferably, transition portion 114 defines a segment 114c of the inner surface profile 106 having a negative slope, meaning that in the direction from a side face 100, 102 to the median axis AA, the depth of the gasket cavity 24 decreases along the length of the sloping segment 14c in the lateral to median direction. Consequently, segment 114c defines a taper by narrowing the inner surface profile 106 for coupling the housing component 12 in the lateral to median direction in order to define a decreasing internal diameter of the housing over the segment 114c. The segment 114c is preferably linear or, alternatively, it can be defined by an undulating or other non-linear profile over its length as long as the segment defines a tapering narrowing in an area of the inner surface 22 of the housing component 12 that contacts with gasket 40. The transition portion 114 of the inner surface profile 106 may include a combination of linear and non-linear segments as long as the transition portion 114 effectively defines a notch 30, as described above.
    [0029] [00029] A preferred housing component 12 'for a 15.24 cm (six inch) nominal 10' coupling is shown in figure 4A. The component has a first side face, 100 'and a second side face 102' spaced from one another to define the median axis A'-A 'of the housing component 12'. The side faces 100 ', 102' define the width W of the coupling 10 'on the median axis A'-A' where the width W is preferably in the range of about 3.82 to about 7.62 cm (1 , 5 to about three inches) and is approximately 4.57 cm (1.8 inches). The housing component 12 'includes a peripheral surface 104' that defines the outer surface of the coupling assembly 10 '. The housing component 12 'further includes an inner surface profile 106' to define the gasket cavity 24 'to accommodate a gasket 40. The inner surface profile 106' is symmetrical about the median axis A'-A 'and includes at its side end of the pipe engaging surface 108 '. Medially extending, the inner surface profile 106 'further includes the side wall portion 110' with a substantial step transition 109 'between the pipe coupling portion 108' and the side wall portion 110 '. The sidewall segment 110 'is preferably linear with a positive slope so that the depth of the gasket cavity 24 increases in the lateral to median direction over the length of the sidewall segment 110'. The sidewall segment preferably still defines an angle α 'of about twenty degrees (20 °) with respect to a line parallel to the median axis A'-A'. The sidewall segments 110 'are spaced around the median axis A'-A' to accommodate the thickness of the gasket 40.
    [0030] [00030] The rear wall portion of the inner surface profile 106 'of the housing component 12' preferably defines the deepest Hmax of the gasket cavity 24 ', which is preferably about 1.27 cm (0.5 in.) .) from a baseline B located on the plane of the pipe engaging surfaces 108 '. In the complete coupling assembly 10, the rear wall portion 112 defines the maximum internal diameter of the coupling 10 'which is preferably about 17.78 cm (7 in.). The rear wall portion 112 is preferably linear, extending parallel to the coupling axis C-C to define the minimum cavity width 24.
    [0031] [00031] Extending between the side wall portion 110 'and the rear wall portion 112' is the transition portion 114 '. The transition portion 114 'preferably includes a first rounded portion 114'a contiguous with the side wall portion 110' and a second rounded portion 114'b contiguous with the rear wall portion 112 '. The transition portion 114 'includes a preferably linear segment 114'c that defines a narrowly tapering portion of the inner surface 22' in the lateral to median direction between the points of P'1 and P'2 to define a notch 30 'and a decreasing internal diameter over segment 114c '. The point P'1 is preferably located at the end of the side wall portion 110 'and the concave rounded portion 114'a having a preferred radius of curvature below 0.254 cm (0.1 inch) and preferably about 0.152 cm ( 0.06 inch). The point P2 is located at the end of the linear segment 114'c and adjoins a convex rounded portion 114'd having a radius of curvature of 0.254 cm (0.1 inch) and preferably about 0.152 cm (0.06 inch). Furthermore, P1 is preferably located at a depth of cavity h1 measured from baseline B, and P2 is preferably located at a depth of cavity h2 from baseline B where h2 is less than h1 .
    [0032] [00032] A preferred housing component 12 "for a 10" coupling. 5.08 cm (2 inches) is shown in figure 4B. The component has a first side face 100 "and a second side face 102" spaced from one another to define the median axis A "-A" of the housing component 12 ". The side faces 100", 102 "of the housing component 12 , 102 "define the width W" of the coupling 10 "around the median axis A" -A ", where the width W" is preferably in the range of about 3.81 cm to about 5.08 cm (about 1.5 to about 2 inches) and is approximately 4.572 cm (1.8 inches). The 12 "housing component includes a peripheral surface 104", which defines the outer surface of the 10 "coupling assembly. The housing component 12 "also includes an internal surface 106" to define a gasket cavity 24 "to accommodate a gasket 40. The preferred interior surface 106" is symmetrical about the median axis A "-A" and includes on the side face the tube engaging surface 108 "of the tube. Extending midway, the inner surface 106" further includes the side wall portion 110 "with substantially a step transition 109" between the pipe engaging portion 108 "and the portion side wall 110 ". The sidewall portion 110 "generally defines a positive slope so that the depth of the sealing cavity 24" increases in the lateral to median direction over the length of the sidewall segment 110 'to define a preferred angle α' of about thirty degrees and preferably about twenty-seven degrees (27 °) with respect to a line parallel to the median axis A "-A" The sidewall segments 110 "are spaced around the median axis A" -A "to accommodate the thickness of the gasket 40.
    [0033] [00033] The rear wall portion of the inner surface 106 "of the housing component 12 'defines a deeper Hmax' of the gasket cavity, which is preferably about 1.27 cm (0.5 inches) from a line base B "which is located on the plane of the pipe coupling surfaces 108". In the complete 10 "coupling assembly, the rear wall portion 112" defines the maximum internal diameter of the coupling 10 ", which is preferably about 7, 62 cm (three inches). The rear wall portion 112 is preferably linear having a length extending parallel to the CC coupling axis to define a minimum cavity width 24. Extending between the side wall portion 110 "and the rear wall portion 112" there is the transition portion 114 ". The transition portion 114" preferably includes a first rounded portion 114 "contiguous with the side wall portion 110" and a second rounded portion 114 "b contiguous with the rear wall portion 112".
    [0034] [00034] The transition portion 114 "includes a preferably linear segment 114" c having a negative slope that defines a narrowly tapering portion of the inner surface 106 "in the lateral to median direction between points P" 1 and P "2 for define the notch 30 "and a decreasing internal diameter over the segment 114c". Point P "1 is preferably located at the end of the side wall portion 110 'and the concave rounded portion 114" a having a radius of curvature below 0.254 cm (0.1 inches) and preferably about 0.152 cm (0.06 inches). Point P2 is located at the end of segment 114'c contiguous with a convexly rounded portion 114'd having a radius of curvature below 0.254 cm (0.1 inches) and preferably about 0.152 cm (0.06 inches). Furthermore, P "1 is preferably located at a depth of cavity h1 measured from baseline B" and P " 2 is preferably located at a cavity depth h2 to pa from baseline B "in which h2 is less than h1.
    [0035] [00035] As noted earlier, the notches 30 defined along the internal surfaces of the housing components 12 described above are configured to apply a compressive force radially inward against the gasket 40 to improve and / or maintain the fluid-tight seal of the gasket 40. In particular, the notches 30 define a tapered surface or wedge along the inner surface 22 of the coupling housing component 12 to apply a force to the peripheral surface of the gasket in a direction radially inward towards the center of the CC coupling and laterally out towards the side wall portions 110 of the housing 12. The gaskets 40 preferably for use with the coupling housings described in this document are ring or ring type bodies defining a central axis GG of the gasket for alignment with the DC axis coupling.
    [0036] [00036] A preferred nominal 15.24 cm (six inch) gasket 40 is shown in figure 5A for use with the preferred 15.24 cm (six inch) nominal 10 'coupling in figure 4A. The annular body 42 of the gasket has a side wall 44 for receiving the first pipe segment 2, a second side wall 46 for receiving the second pipe segment 14. The second side wall 46 is spaced from the first wall 44 to define a median axis BB between them extending perpendicular to the central axis GG of the gasket. The annular body 42 includes an outer peripheral surface 48 and an inner surface 50 spaced radially from the central axis G - G of the gasket. Each of the peripheral and internal surfaces 48, 50 is preferably symmetrical about the median axis BB of the gasket and is, moreover, preferably contiguous with the side walls 44, 46 of the gasket having a rounded corner defining the transition between the walls side 44, 46 and the outer and inner surfaces 48, 50 of the gasket.
    [0037] [00037] In cross section, the inner surface 50 defines a pair of flange sealing surfaces 52, which are preferably arranged equally on the median axis B-B. The surfaces of the sealing edges 52 directly engage the outer surface of the pipe segments to form a fluid-tight seal when sufficient compression force is applied to the gasket 40. The sealing edges 52 define a profile that, in the compressed gasket 40, defines an obtuse angle with a line parallel to the median axis BB the profile of the sealing edges may include linear portions, rounded portions and / or a combination thereof. Preferably, formed with and depending on the inner surface 50 along the median axis is a central leg portion 54. The central leg acts as a plug and divider between the ends of the pipe segments that are joined as seen, for example, at figures 3A and 3B. The profile of the preferred central leg 54 tapers narrowly in the axial direction along the median axis A'-A ', varying in thickness over its axial length from about 0.254 cm to about 0.508 cm (0.1 inch to about 0 , 2 inch).
    [0038] [00038] The inner surface 50 of the gasket 40 'further includes a transition segment 56 that connects the sealing lip 52 to the central leg 54. The transition segment 56 defines a cavity or channel 58 between the sealing lip surface. and the central leg 54. The cavity 58 defined by the transition segment 56 provides a void in which the gasket body 42 can bend over itself under the compressive forces of the housing components 12, 14 of the coupling 10 and the pressure of the fluid transported in the pipe segments and through the pipe joint. The transition segment 56 preferably includes a combination of rounded portions and linear portions to connect the sealing lip surface 52 to the central leg 54.
    [0039] [00039] In the preferred embodiment of figure 5A, the transition segment 56 includes a first portion 56a which preferably begins with a first rounded convex portion R1 that is contiguous with a linear segment that extends laterally to the side wall 44, 46 and peripherally towards the peripheral surface 48 for a second rounded portion R2 on which the gasket body 42 folds. The transition segment 56 preferably also includes a second portion 56b which is preferably initially a line segment line contiguous with the second rounded portion R2 and extends mediumly towards the median axis AA and the peripheral surface 48 of the gasket for a third rounded portion R3 contiguous with the central leg 54. The preferred geometric profile and, in particular, the positive slope segment 56 provides a desirable sealing channel 58 in which the depth of the channel 58, as measured from a parallel line to the CC axis of the gasket, increases in the lateral to median direction. Consequently, the body 42 of the gasket 40 decreases in its radial thickness for a portion of the body 42 along the lateral to median direction.
    [0040] [00040] For the preferred gasket 40 of figure 5A the angled side wall surfaces 44, 46 are spaced to define a gasket thickness, which is in the range of a minimum thickness on the peripheral surface of about 2.286 cm (0.9 inch) ) at a maximum thickness of the entire gasket 40 of about 2.794 cm (1.1 inch). Preferred gaskets are preferably sized to slide over the ends of the pipe segments with at least a portion of the sealing flange surface 52 forming a contact surface with the external surface of the pipe segments and the central leg 54 engaging the surface of end of the pipe segment. For a 15.24 cm (6 inch) nominal pipe segment, the peripheral surface 48 defines a preferred outer diameter Dmax for the gasket 40 to be about 17.78 cm (seven inches). The center leg 54 defines a Dmin of the preferred minimum inner diameter of the gasket of about 14.605 cm (5.75 inches), and the sealing edges 52 define a preferred diameter D, at its most median end of about 15.24 cm (six inches). The width of the central leg 54 preferably tapers in the radial direction towards the G-G axis of the gasket.
    [0041] [00041] For the preferred inner surface 50 of the (15.24 cm (6 inch) nominal gasket, the third rounded portion R3 includes a preferred radius of 0.152 (0.06 inch) and is located closest to the median axis BB The second rounded portion R2 includes a preferred radius of about (0.076 cm (0.03 inches) and is located closer to the GG axis of the gasket than R3.
    [0042] [00042] Another preferred gasket 40 'is shown in figure 5B, which incorporates similar characteristics of the previous modalities, but is preferably sized and configured for nominal 5.08 cm (two inch) pipe segments. In particular, the peripheral gasket surface 40 'defines a diameter Dmax of about 7.62 cm (three inches), the central leg 54 defines a minimum preferred diameter Dmin of the gasket of slightly 5.08 cm (two inches), with the sealing edges 52 defining a preferred diameter D at its most median end of about 5.08 cm (two inches). For the preferred internal surface 50 'of the 15.24 cm (six inch) nominal gasket, the third rounded portion R3' includes a preferred radius of 0.15 cm (0.06 inch) and is located closest to the median axis B '- B' than R2 '. The second rounded portion R2 'includes a preferred radius of less than 0.254 cm (0.1 inch) and is located closer to the G-G axis of the gasket than R3'.
    [0043] [00043] With reference again to figure 3B and the compressed state of the preferred coupling arrangement 10, the low point P0 of the notch 30 of the housing component is located in the middle of the P1 over the second preferred radius R2 of the gasket 40 over which the fold gasket. This preferred configuration provides a surface contact between the inner surface 22 of the housing component 12 and the peripheral surface 48 of the gasket 40, which provides a force that has a horizontal component in the lateral direction to improve or maintain contact between the wall portion side 110 of the housing member 12 and the side wall 44, 46 of the gasket 40, in order to maintain or increase the sealed engagement between the gasket and the outer surface of the pipe segments.
    [0044] [00044] For each of the preferred 40 ', 40 "gaskets, the peripheral surface 48 defines a profile that is substantially planar extending parallel to the central CC axis of the gasket. In another alternative embodiment of the 40'" gasket, shown in the figure 5C, the peripheral surface 48 '' 'defines a profile that is nonlinear. In particular, the peripheral surface 48 "'preferably defines a profile that is symmetrical about the median axis B'" - B "'of the gasket with two enlarged end portions 60' '' and a central portion 62 '' 'located radially into the rounded end portions 60 "'In the embodiment of figure 5C, the central portion 62' '' is preferably arched and symmetrical about the median axis B '" -. B' ". The end portions 60 '"provide a transition profile between the sealing side walls 44' '' ', 46' '' '' and the central portion 62" 'of the peripheral surface. The profile of the end portion 60 ’‘ ‘can be defined by rounded segments, substantially linear segments or a combination of both. The surfaces of the end portions 60 '", alone or in combination with the central portion 62' '', define a gasket surface that can engage the preferred conical surface of the notch 30 in the housing components described in this document to provide a force normal directed laterally towards the side wall portion of the gasket housing. The diameter of the gasket 40 "" preferably varies from one side of the gasket to the next. Preferably, the rounded end portions 60 "" "define a larger diameter of the gasket 40 "'than the central portion 62' '', and more preferably the end portions 60" 'define the maximum diameter of the gasket 40 "" "with the center of the arcuate portion 62" "defining a percentage of the maximum gasket diameter in the range of about 90 percent to about 99 percent (9099%). Consequently, the gasket diameters defined in the end portions 60 "" and the central portion 62 "" can define between one and the other percentage difference in the gasket diameter profile, which is in the range of one to about ten percent (110%). Alternatively, each of the end portions 60 '' 'and central portion' "'can define a perpendicular to the median axis B'" - B '"which still defines a radial differential RD along the median axis B' '' - B '' 'which can be about 0.254 cm (0.1 inch) or less.
    [0045] [00045] In view of the above descriptions of both the preferred gaskets and the housings, alternative pipe coupling arrangements are possible. For example, as shown in figures 6A and 6B, they are schematic cross-sectional illustrations of pipe coupling arrangements using an alternative 40 ’’ ’gasket embodiment. More specifically, an alternative embodiment of the 40 '' gasket is shown in figure 6A, the peripheral surface 48 '' 'defines a profile having two enlarged end portions 60' '' with a substantially linear central portion 62 '' between them which functions substantially parallel to the GG axis of the gasket and / or the X-X axis coupling. In the arrangement of Figure 6A, a housing 12 is provided having an inner surface 22 with a profile 106 that substantially mirrors the peripheral surface 48 '' 'of a substantially dovetail shape.More specifically, the inner surface 22 has an inner surface profile 106 in which the rear wall portion 112 is preferably at the same cavity depth and formed contiguously formed with the notches 30 in order to define a centralized surface that engages the substantially linear central portion 62 '' 'of the 40' 'gasket in the mounted coupling arrangement. The rear wall portion 112 preferably engages and substantially along its length. The inner surface profile 106 results in a pair of symmetrically arranged side recesses over the rear wall portion 112 to accommodate the rounded end portions 60 '' ''. In the embodiment of figure 6A, the notches 30 parallel and / or engage the substantially linear surface segments of the end portions 60 ’‘ ‘so as to provide the force in the lateral direction to the side walls of the housing segment 12.
    [0046] [00046] Preferred gaskets 40, 40 ', 40' "described in this document can be used with housing components that do not include notches 30. Thus, preferred gaskets 40, 40 ', 40'" can be used with housings known. The inventor has discovered a preferred radial differential RD range, as defined between the 60 '' 'raised end portions and the 40' '' gasket center portion 62 '' for which a housing having a notch 30 is preferred. RD radial differential greater than 0.152 cm (0.06 inch) a notch is desirable to provide normal strength by having a component driven sideways. For an RD radial differential of about 0.152 cm (0.06 inch) or less, the arrangement coupling can employ a housing without a notch along the inner surface, for example, figure 6B shows the gasket 40 '' 'with a housing 12 in which the inner surface 22 does not have a notch 30. The raised end portions are configured to engage the inner surface of the housing 22 so that in the mounted coupling configuration, the side walls 44 '' ', 46' '' of the gasket 40 '' 'are directed laterally and the central portion 62 "' is directed radially out towards the pair and rear of the housing. In the 40 '' gasket, the profile of each enlarged end portion 60 '' is preferably defined by a linear segment to engage the rear wall of the housing with preferably rounded portions on each side, which are respectively contiguous with the central portion 48 '"and the gasket side walls. The enlarged end portion 60 '' '' and the central portion 48 "'preferably define a radial differential RD of about 0.152 cm (0.06 inch).
    [0047] [00047] As noted above, the transition segment 56 '' 'along the inner surface 50 "' of the gasket may include a combination of varied rounded portions and / or linear portions to connect the sealing flange surface 52 to the center leg 54. For example, the transition segment 56 '"may consist of two or more rounded segments 56a, 56b, 56c, 56d extending from the sealing flange surface 52"' to the central leg 54 "" of so that channel 58 "is substantially in the form of a tear drop. Alternatively, the transition segment 56 ’‘ ‘can include one or more linear segments as seen, for example, in Figures 6A and 6B. In addition, the 56 '"transition segment can be configured to provide a desired average radial thickness of the 40' 'gasket in order to maintain a desired strength or resilience in the 40' 'gasket. Consequently, the transition segment 56 '' 'and the channel 58 "' can be configured in such a way that the central portion 48" "and a tangential outside the portion more radially out of the channel 58" "perpendicular to the median axis define a radial thickness of the gasket being about 0.254 cm (0.1 inch) to about 0.444 cm (0.175 inches).
    [0048] [00048] Other aspects of the gaskets may vary, as, for example, it is seen in figure 6B, the sealing edge surface 52 '' 'may include a combination of rounded and / or linear segments to define a series of transition points 52a '", 52b'", 52c '", and 52d' ''. The 52d '" transition preferably defines a first internal gasket diameter that is greater than the nominal diameter of the pipe to be joined. The transition 52c ’’ ’and 52b’ ’’ preferably preferably define the maximum and minimum pipe diameter for the determined nominal pipe diameter, respectively. The innermost transition point 52a '"is located radially in relation to the center of the gasket to provide sufficient sealing over an outer tube surface that may be out of phase for the given nominal tube size. The preferred coupling arrangements described in this document are preferably used to couple pipes or pipes and, in particular, copper or steel pipes.The coupling arrangements of figures 6A and 6B are well suited for joining pipes or steel pipe because the flange surfaces of Preferred gaskets can effectively address large dimensional variations that can be experienced at the steel pipe junction in the nominal shape Preferred gaskets are preferably sized to slide over the ends of the pipe segments with at least a portion of the gasket surface 52 '"forming a contact surface with the end surface of the pipe segments and the profile on the central 54 "'engaging the surface end of the pipe segment. For a nominal pipe segment of 10.16 cm (four inches) (4 inches), the peripheral surface 48 '' 'defines a maximum preferred outer diameter for the 40 "' gasket to be approximately 13.97 cm ( five and a half inches), and more preferably 13.716 cm (5.4 inches). The center leg 54 '' 'defines a preferred minimum inner diameter of the gasket of about 10.16 cm (4 inches), and the edges of seals 52 "'define a preferred diameter at its most median end of about 11.43 cm (four and a half inches) and more preferably 11.176 cm (4.4 inches). The width of the central leg 54 ’‘ ‘preferably tapers in the radial direction in the direction of the gasket axis. For the preferred 40 "'gasket, the side wall surfaces 44" ", 46" "46" "define an average thickness of about 2.54 cm (one inch) and more preferably a minimum thickness on the peripheral surface of about 2.286 cm (0.9 inch) and a maximum 40 ”gasket thickness of about 3.048 cm (1.2 inches).
    [0049] [00049] The preferred embodiments of 15.24 cm, 10.16 cm and 5.08 cm (six, four and two inches) coupling arrangements are shown and described above. Preferred embodiments can be in the size range of a nominal coupling from 2.54 cm to 30.48 cm (one inch to 12 inches). The known gasket configurations can be used with the preferred housing components 10 described herein. For example, as shown in Figures 9A and 9B of US Patent No. 61 / 7255,351, gaskets in the standard style in the "C or" three seal "format, identified on page 12 in Tyco Fire & Suppression Products Publication IH-1000FP, entitled" Grinnel® Grooved Fire Protection Installation Manual "(August 2007) can be used in preferred 10, 10 'coupling assemblies. A copy of page 12 of the installation manual is provided in Provisional US Patent Application No. 61 / 255,409, which is incorporated by reference in its entirety.
    [0050] [00050] Although the present invention has been disclosed with reference to certain modalities, numerous modifications, changes, and changes in the described modalities are possible without departing from the scope and scope of the present invention. Consequently, it is intended that the present invention is not limited to the described modalities, but that it has the full scope defined by the language of the following claims, and their equivalents.
    权利要求:
    Claims (17)
    [0001]
    Coupling (10) characterized by the fact that it comprises: an accommodation (12) having: a first side face (100) for receiving a first pipe segment (2); a second side face (102) for receiving a second pipe segment (4), the second side face being spaced from the first side face to define a median axis of the housing; and an inner surface (22) defining a cavity, the inner surface extending between the first side face and the second side face so as to be cut along the median axis and define an increasing depth of the cavity from the side face to the median axis , the inner surface defining a profile (106) between one of the side faces and the median axis, the inner surface profile having: a side wall portion (110); a rear wall portion (112); and a transition portion (114) between the side wall portion and the rear wall portion, the transition portion defining a negative slope in the direction from a side face to the median axis, the transition portion defines a notch (30 ) along the inner surface of the housing, the notch (30) includes a first rounded portion (114a), a second rounded portion (114b) with a straight line segment (114c) extending between the first and second rounded portions, the straight line segment defining the negative slope; and a gasket (40) arranged in the housing cavity to form a seal around a pipe joint, the gasket (40) including: a first side face (44); a second side face (46) spaced from the first side face; a peripheral surface (48) and an internal surface (50), the peripheral and internal surfaces (48, 50) extending between the first and second side surfaces, the gasket (40) being arranged in the housing (12) so that the inner and peripheral surfaces (48, 50) are cut along the median axis of the housing (12), the inner surface (50) defining a central leg (54) extending along the median axis, the inner surface (50) defining still a first sealing lip (52) and a second sealing lip (52), the first and second sealing lip (52) being arranged around the central leg (54), in order to define a first flexion point ( P1) and transition segment (56) of the inner surface (50) extending between the first sealing lip (52) and the central leg (54) and a second flexion point (P1) and transition segment (56) between the second sealing lip (52) and the central leg (54), the first and second transition segments (56) extending towards the sealing lip (52) towards the median axis and the peripheral surface (48) in order to define a positive slope; where in an assembled configuration, the housing (12) engages the gasket, in order to allocate the notch (30) of the housing between the flexion point (P1) and the median axis (AA) and bend the gasket over the first and second flexion points (P1), so that at least one of the first and second side faces (44, 46) of the gasket are directed laterally against the side wall portion (110) of the inner surface (22) of the housing.
    [0002]
    Coupling according to claim 1, characterized by the fact that it still comprises: a gasket (40 '') including: a first side face (44 ''); and a second side face (46 '') spaced from the first side face (44 ''); a peripheral surface (48 '') and an internal surface (50 ''), the peripheral and internal surfaces (48 '', 50 '') extending between the first and second side surfaces, the gasket being arranged in the housing of so that the inner and peripheral surfaces are cut along the median axis of the housing, the inner surface defining a first sealing lip (52 '') and a second sealing lip (52 ''), the first and second sealing edges (52 '') being arranged around the median axis, the internal surface (50 '') including a flexion point and transition segment (56 ''), the flexion point being located between one of the first and second sealing edges ( 52 '') and the transition segment (56 ''), the transition segment extending in the direction from one of the first and second sealing edges to the median axis and the peripheral wall in order to define a slope positive, the peripheral surface (48 '') defining a profile having a pair of portions of end (60 '') arranged around the median axis with a central portion (62 '') extending between the two end portions, the end portions defining the maximum gasket diameter; wherein in an assembled configuration, the inner surface (22) of the housing engages the end portions (60 '') to compress the gasket so as to bend the gasket over the flex point and direct at least one of the first and second side faces (44, 46) of the gasket laterally against the side wall portion (110) of the inner surface (22) of the housing.
    [0003]
    Coupling according to claim 2, characterized in that in the assembled configuration the central portion (62 ’’) of the peripheral surface is directed out towards the rear wall (112) of the housing.
    [0004]
    Coupling according to claim 1, characterized in that in the assembled configuration a central portion of the outer surface (48) is directed outwards towards the rear wall (112) of the housing.
    [0005]
    Coupling according to claim 3 or 4, characterized in that, in an uncompressed state, the central portion (62 ’’) peripheral surface (48 ’’) of the gasket is one among substantially linear and substantially arched.
    [0006]
    Coupling according to claim 1, characterized by the fact that the outer surface of the gasket (40 '') defines a profile having a pair of end portions (60 '') arranged around the medial axis with a central portion ( 62 '') extending between the end portions, the end portions defining the maximum gasket diameter.
    [0007]
    Coupling according to claim 2 or 6, characterized in that the end portions (60 '') are rounded.
    [0008]
    Coupling according to claim 2, characterized by the fact that the inner surface (50 ’’) of the gasket defines a central leg (54 ’’) that extends along the medial axis.
    [0009]
    Coupling according to claim 2, characterized in that the transition segment (56, 56 ’’) comprises at least one of a rounded portion and a linear portion.
    [0010]
    Coupling according to claim 9, characterized by the fact that the transition segment (56, 56 ’’) comprises a rounded portion defining the positive slope.
    [0011]
    Coupling according to claim 9, characterized by the fact that the transition segment (56, 56 ’’) comprises a linear portion defining the positive slope.
    [0012]
    Coupling according to claim 2, characterized by the fact that the internal surface of the housing includes a first rounded portion (114'a), a second rounded portion (114'd) with a straight line segment extending between the first and second rounded portions (114'a, 114'd).
    [0013]
    Coupling according to claim 1 or 12, characterized by the fact that the first rounded portion (114'a) has a center of curvature arranged on one side of the straight line (114'c), the second rounded portion (114 ' d) has a center of curvature arranged on the other side of the straight line, the first rounded portion (114'a) defines a first cavity depth (h1) of the housing and the second rounded portion (114'd) defines a second depth of cavity (h2) less than the first cavity depth (h1).
    [0014]
    Coupling according to claim 13, characterized by the fact that the rear wall portion defines a third cavity depth (Hmax) being any one of: (i) the second cavity depth (h2); (ii) at least the first cavity depth (h1); or (iii) equal to the second cavity depth (h2).
    [0015]
    Coupling according to claim 14, characterized in that the cavity defines a central axis of the coupling, the rear wall part being substantially linear extending substantially parallel to the central coupling axis.
    [0016]
    Sealing method of a pipe joint using the coupling as defined in claim 1, characterized by the fact that it comprises the steps of: radially compress an inner surface (22) of a housing component (12, 14) into a gasket (40) disposed within a cavity defined by the inner surface (22), the gasket having a peripheral surface (48) and an inner surface (50) cut by a median axis (AA), the inner surface (50) of the gasket defining an inner channel (58), the inner surface (50) of the gasket including a flexion point (P1), and a linear or rounded between the flexion point and the median axis, the linear or rounded segment defining a positive slope in the direction towards the median axis; and compress the gasket so that the gasket bends around the flexion point (P1) and moves a side portion (44, 46) of the gasket against a side wall (110) of the housing; where said bending and movement of the gasket during compression is achieved by one of: (i) locate a notch (30) on the inner surface (22) of the housing component (12, 14) close to the peripheral surface (48) of the gasket between the median axis (AA) and the flexion point (P1); and (ii) locate the inner surface (22) of the housing close to the end portions (60 '') of the peripheral surface (48 '') of the gasket, the end portions (60 "') defining the maximum diameter of the gasket.
    [0017]
    Method according to claim 16, characterized in that it further comprises moving a central portion (62 ’’) of the peripheral surface (48 ’’) towards the rear wall (112) of the housing.
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    同族专利:
    公开号 | 公开日
    JP2013508653A|2013-03-07|
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    JP5931735B2|2016-06-08|
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    KR102137991B1|2019-10-15|2020-07-27| 금강씨에스|joint assembly for pipe joint having convenience in construction|
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    CN111536115A|2020-05-12|2020-08-14|芜湖清柏白露智能信息科技有限公司|Clamping assembly and application thereof|
    法律状态:
    2019-01-08| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-03-19| B06T| Formal requirements before examination|
    2019-12-24| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application according art. 36 industrial patent law|
    2020-04-22| B09A| Decision: intention to grant|
    2020-09-24| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 25/10/2010, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US25540909P| true| 2009-10-27|2009-10-27|
    US61/255,409|2009-10-27|
    PCT/US2010/053970|WO2011056512A1|2009-10-27|2010-10-25|Systems and methods for pipe couplings|
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