• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    ribbed edge geometry for a non-pneumatic tire. The present invention provides improved ribbed edge geometry for non-pneumatic and hybrid tires that is less prone to fatigue when used. the present invention also provides a way to fabricate such geometry in a mold. in particular, the radius edge geometry is provided with a reduced cross section that reduces bending stresses locally and allows the construction of a unique mold that changes the positioning and orientation of potential burr and reduces other potential molding failures when a liquid such as polyurethane is introduced into the mold cavity to form a streak. this change results in the reduction of the possibility of a stress point being found near the edge of the groove, increasing the tire's durability.
    公开号:BR112013004931B1
    申请号:R112013004931-6
    申请日:2011-08-16
    公开日:2021-06-29
    发明作者:Steven M. Cron；Michael Edward Dotson；Kevin C. Miles；Timothy Brett Rhyne
    申请人:Compagnie Generale Des Etablissements Michelin；
    IPC主号:
    专利说明:

    PRIORITY CLAIM
    [0001] This application claims the benefit of the previously filed US Provisional Patent Application entitled "Spoke Edge Geometry for a Non-Pneumatic Tire", designated Serial No. US 61/379,351, filed September 1, 2010, and which is incorporated in its entirety by reference herein for all purposes. FUNDAMENTALS OF THE INVENTION FIELD OF THE INVENTION
    [0002] The present invention provides improved radius edge geometry for a non-pneumatic or hybrid tire that is less prone to fatigue when used. The present invention also provides a way to fabricate such geometry in a mold. In particular, the grated edge geometry is provided with a reduced section that reduces bending stresses locally and allows for a unique mold construction that changes the positioning and orientation of potential burr and reduces other potential molding failures when a liquid such as polyurethane is introduced into the mold cavity to form a spoke. This change results in a reduction in the possibility of a stress concentration point being found near the grated edge, increasing the tire's durability. DESCRIPTION OF RELATED TECHNIQUE
    [0003] Non-pneumatic or structurally supported tires have been disclosed in the art. For example, US Patent No. 7,201,194, commonly owned by the assignee of the present invention, relates to a structurally supported strong tire that supports a load without internal air pressure. The contents of the present patent are incorporated herein by reference in their entirety. In an exemplary embodiment, this tire includes an outer annular shear band and a plurality of spoked weft spokes which extend transversely across and radially into the annular band and are anchored to a wheel or hub. In certain exemplary embodiments, the annular shear band may further include a shear layer, at least one first membrane adhered on the radially internal extent of the shear layer, and at least one second membrane adhered on the radially external extent of the shear layer. In addition to the ability to operate without a required pressure, the invention of US Patent No. 7,201,194 also offers advantages that include more uniform ground contact pressure over the entire length of the contact area. Thus, this tire mimics the performance of a pneumatic tyre.
    [0004] Figure 1 shows such a tire defining radial R and axial A directions. For reference, all reference numerals in the 100s used herein refer to an earlier tire, spoke and mold design while all reference numerals in the 200 in this document refer to a new and improved tire, spoke and mold design in accordance with an embodiment of the present invention. Tire 100, 200 comprises a tread 102, 202 attached at its outer extension 104, 204 of spokes 106, 206, which in turn are connected to a hub or wheel 108, 208 at its inner extension 110, 210 by means known in the art. For the tire version 100, 200, shown, spokes 106, 206 are formed by pouring a liquid polyurethane into a rotary mold where the liquid is then cured or hardened. It can also be seen that the spokes 106, 206 are grouped in pairs and that the individual spokes 106', 106", 206', 206" within each pair are consistently spaced from each other and that each pair is spaced consistently from each other. adjacent pair around the circumference of the tire. The spacing within each pair and the spacing between each adjacent pair need not be the same.
    [0005] As described by abstract et al. 2, lines 28-41 of the '194 patent, the spokes 106, 206 support the tire 100, 200 in tension near the top of the tire 100, 200 and not in compression at the bottom of the tire 100. Instead, the spokes 106 , 206, on the underside of the tire near the tread, which is where the tread 102, 202 of the tire contacts the road easily compresses or accumulates. This helps the tire to simulate the pneumatic support function of a pneumatic tire. As can be imagined, these spokes 106, 206 suffer a great amount of cyclical compression tension stress especially as the tire 100, 200 rotates at high speed. This creates a risk of fatigue failure for the rays. Consequently, the strength of the spokes 106, 206 and the operability of the tire 100, 200 depend significantly on the precision of the geometry with which the spokes 106, 206 are made and the absence of any stress points caused by manufacturing failures.
    [0006] Looking now at figures 2A, 2B and 2C, front, side and sectional views respectively of a previous spoke design that was susceptible to molding failures are shown. For clarity reasons, the tread has been omitted. Focusing on Figure 2A, the transverse shape of spokes 106', 106" can be seen, in which its outer extension 104', 104" is fixed to the tread and its inner extension 110', 110" is connected to a hub or wheel 108. The thickness of the spoke, T106, which is relatively consistent at 4mm, and the edges 112', 112" of the spokes 106', 106" where burr 114 often occurs during the molding process are illustrated. 114 sits near edges 112', 112" of spokes 106', 106", where spokes 116 have been added to help reduce stress as spokes 106', 106" alternate between tension and compression depending on the tire. 100 rotates on a road surface under a vertical load. The reason why this burr occurs and why it is located as illustrated will be discussed fully later. Since the cross section of spokes 106', 106" is quite constant and straight , the neutral axis or plane 118 on which each radius 106', 106" bends is essentially about the midplane extent of radius 106', 106" and the torque of an outer flat surface 120 from radius 106', 106" to neutral plane 118 remains reasonably constant all the way to any edge of radius 106', 106".
    [0007] In addition to burr 114, the way in which the mold that formed this geometry was constructed generates the possibility of mold mismatch from one side of the mold to the other which means that, in addition to or instead of, sometimes, the presence of burr 114, the threaded edges 116 of the spokes 106 do not exactly line up with a flat outer surface 120 of the spoke 106, creating a small edge or corner near the edge of the spoke 106. This may also be undesirable for reasons that will be discussed below. A fuller explanation for this molding failure will be discussed later.
    [0008] Tests of this spoke design have revealed that any of these burr 114 locations or mold mismatch create a stress point as spoke 106 alternates between tension and compression as tire 100 rotates over a road surface. These manufacturing flaws then cause crack initiation and propagation which can cause spoke 106 to fail, undesirably impairing the operability of the tire 100. The location of these failures is less than ideal because they are near edge 112 of spoke 106 where they flex, creating high stresses and pressures that cause cracking. In addition, the orientation of burr 114 is less than ideal as it is perpendicular or oblique to the neutral flexion plane 118 of radius 106, which means that the fault it creates is aligned with the direction in which the burr has a natural tendency to propagate to cracks, as the longest dimension of the burr is one that is crooked, creating the highest momentum and greatest concentration of stress on the burr. In other words, the burr is oriented in its stiffest configuration with respect to bending spokes making it more susceptible to cracking and this adds to the failure susceptibility of spoke 106.
    [0009] Referring to Figure 3, a general representation of how the mold 122 that made the previous radius configuration was constructed is pictured. A first set of cores 124, extending from a first mold half 126 and inter-hinging with a second set of cores 128 extending from a second mold half 130, form the majority of the surface of the cavities 132, which are the negative image of the rays that are formed. Each core has a 25° exit on one side and this in conjunction with the inter-articulation of cores 124, 128 allows the spokes to maintain a constant thickness which helps maintain the strength of the spokes. It should be noted that these cores 124, 128 are, in fact, arranged in a circular matrix on the mold 122 and that this figure shows their sections projected onto a flat plane for ease of illustration. In addition, common mold features such as vent to aid in proper mold filling allowing trapped gases to escape and alignment features such as taper pins to facilitate mold alignment on cores, 124, 128 and mold halves, 126, 130 have been omitted for reasons of clarity. Furthermore, the cores are shown to be solid extensions of the mold halves, 126, 130, but in reality these are often distinct inserts which are held within the mold halves 126, 130 and which can be easily replaced if a core 124, 128 is damaged.
    [0010] Looking more closely at the ends 133 of the cavities 132 that form the fillets found on the spokes, it can be seen that they lie adjacent to the flat closure surfaces 134 where the core 124, 128, extending from one half of mold 126, 130 in contact or nearly touching the other half of the mold 126, 130. As a result of this mold configuration, it is possible for a liquid such as polyurethane to seep into this space if a large enough opening is created due to machining tolerances , core deflection due to mold transformation conditions, etc. This creates the unwanted burr that was previously described near the streaked edges. Furthermore, since the parting line is perpendicular to the direction of extension of the cores 124, 128, the burr will be nearly orthogonal to the plane of bending the spokes, which is undesirable, as explained above.
    [0011] Looking now at Figure 3A, which is an enlarged view of the rounded end portion 133 of the cavities 132, an example of mold mismatch is given. As shown, core 128 undesirably extends into cavity 132, creating an edge or corner 136 that forms the edge in complementary corner shape or geometry on the radius. In this case, either the rounded end location 133 is in the wrong place due to manufacturing errors and/or tolerance stacking, and/or the core is deviated, poorly manufactured, etc. so that the straight surface 138 of the core 128 is not tangent to the rounded end 133 of the cavity 132, but is offset downward relative to the rounded end 133 of the cavity 132 as seen in Figure 3A. Sometimes this geometry is inverted and the core 128 is displaced upward relative to the rounded end 133 of the cavity 132 as seen in Figure 3A. In that case, the shoulder 138 that the mold mismatch creates can also create a stress point that is undesirably positioned and oriented as it lies on an outer surface near the edge of the spokes and is perpendicular to the neutral bending plane of the spoke. So this can also initiate cracks that could cause the beam to fail. Mold mismatch can occur in any, all, or none of the previous mold construction cavities depending on a number of variables such as core deflection due to processing conditions, improper machining and tolerance stacking, etc.
    [0012] In this regard, there is a need for an improved radius edge design and mold to create such geometry that limits the creation and changes the orientation of mold flaws like burr and mold mismatch near the radius edge. Also, revised radius edge geometry to reduce the stresses and stresses found in this area would be helpful. SUMMARY OF THE INVENTION
    [0013] A tire according to an aspect of the present invention comprises a tread and a spoke with the main body geometry and the free edge geometry that is found at the axial end of the spoke that has a reduced cross section compared to the geometry of the main body.
    [0014] Sometimes the thickness of the main body geometry is approximately 4mm, but it can be changed to suit a particular application.
    [0015] The radius edge geometry can also include a radius found at the end of the radius that has a value of about 1.5 mm. In some cases, the radius is found on only one side of the radius.
    [0016] In some embodiments, the reduced cross section of the grated edge geometry includes a tapering portion.
    [0017] In that case, the taper portion portion can form an internal angle with the main body geometry of approximately 11.8 degrees.
    [0018] The radius edge geometry can also include a transition radius between the main body geometry and the taper portion that has a value of about 20 mm.
    [0019] In new embodiments, the taper portion of the radius edge geometry may have a width of about 15 mm.
    [0020] In other embodiments, the reduced cross section of the edge geometry may include a stepped portion.
    [0021] In such a case, the thickness of the step portion is approximately 2 mm.
    [0022] Sometimes the width of the stepped portion varies from 4 - 11 mm.
    [0023] In other embodiments, ray edge geometry includes transition radii that have a value of about 1.5 mm.
    [0024] A tire in accordance with another aspect of the present invention includes a tread and a radius having a free radius edge geometry that has at least one side along an axial extent of the radius that lacks a blend, chamfer or otherwise. transition geometry near the radius edge.
    [0025] In this case, the radius edge geometry can also have a portion with a reduced section near the radius edge.
    [0026] In some cases, the radius has a neutral bending plane and the burr found on the radius edge is oriented substantially parallel to said neutral bending plane.
    [0027] The present invention also includes a mold for forming a spoke by a tire comprising a first mold half, a second mold half, cavities and telescopic cores having an angled closure surface that extends beyond the cavities and into a mold half and contacting or near-contacting such mold half to such angled closure surface.
    [0028] In some cases, the cavities have a radius at its end portion opposite the side of the cavity that is close to an angled closure surface.
    [0029] In other cases, the cavities may have a free angle and the closing surface may have the same angle.
    [0030] In other embodiments, the cavities may have a reduced cross section at their end.
    [0031] In any case, it is ideal if the burr produced by a mold forming a radius is substantially parallel to the neutral bending plane of the radius. By substantially parallel, it means that the direction of the burr forms an angle of forty-five degrees or less with the neutral bending plane of the radius in the area where the burr is found. In some cases, ideally, the angle should be practically zero.
    [0032] Additional modalities of the present subject, not necessarily expressed in the summary section, may include and incorporate various combinations of features aspects, components or steps referenced in the summarized objects above, and/or other features, components or steps discussed otherwise in this application. Those of common ability. in the art, they will better appreciate the characteristics and aspects of such modalities and others, by evaluating the rest of the specification. BRIEF DESCRIPTION OF THE DRAWINGS
    [0033] The disclosure and complete feasibility of the present object including the best mode, addressed to an expert in the art is provided for in the specification, which makes reference to the attached figures.
    [0034] Figure 1 is a perspective view of a non-pneumatic tire that has spokes.
    [0035] Figure 2A is a front view of a pair of spokes of a first configuration that was previously used on a tire with the tread removed for clarity.
    [0036] Figure 2B is a side view of spokes of Figure 2A.
    [0037] Figure 2 is a sectional view of spokes of Figure 28, taken along its line 2C-2C.
    [0038] Figure 3 is a partial sectional view of a previous mold construction used to form the spoked geometry shown in figures 2A to 2C that is susceptible to molding failures.
    [0039] Figure 3A is an enlarged view of the end of a mold cavity of Figure 3 that forms a radius to more clearly show the mold mismatch.
    [0040] Figure 4 is a partial sectional view of a new mold construction according to one embodiment of the present invention that forms new spoked geometry according to another embodiment of the present invention.
    [0041] Figure 5A is a front view of a pair of spokes of a second configuration according to an embodiment of the present invention with tread removed for clarity.
    [0042] Figure 5B is a side view of spokes of figure 5A.
    [0043] Figure 5C is a sectional view of the spokes of figure 58 taken along line 5C-5C thereof.
    [0044] Figure 6 is an enlarged view of the edge of the spokes shown in Figure 5C showing the dimensions of the radius geometry.
    [0045] Figure 7 is an enlarged view of the end of spokes according to an alternative embodiment of the present invention.
    [0046] Figure 8 is an enlarged view of the end of a cavity that uses an angled closure and no radius edge reduction to redirect burr to prevent radius failure. DETAILED DESCRIPTION OF PARTICULAR MODALITIES
    [0047] Reference is now made in detail to embodiments of the invention, one or more examples of which are illustrated in the figures. Each example is provided by way of explanation of the invention and is not intended as a limitation of the invention. For example, features presented or described as part of one modality can be used with another modality to produce yet a third modality. It is intended that the present invention include these and other modifications and variations. It should be noted that, for purposes of discussion, only a portion of exemplary tire arrangements may be depicted in one or more of the figures. Reference numbers are used in the figures solely to assist the reader in identifying various elements and are not intended to introduce any limiting distinctions between modalities. Common or similar numbering of for one modality indicates an element similar to the other modality.
    [0048] Due to the tendency of prior mold construction to produce molding flaws, the inventors of the present invention have altered the mold construction and spoke geometry so that the spokes do not fail due to molding flaws. Figure 4 shows an embodiment of the molding solution that has been developed.
    [0049] The newly designed mold 222 is similar in many respects to the previous mold design and is composed of a first set of telescopic cores 224 that extend from a first mold half 226 and inter-articulate with a second a set of telescopic cores 228 extending from a second mold half 230 which forms the majority of the surface area of the cavities 232, which are the negative image of the spokes and which form the spokes. These cores 224, 228 are called telescopic because they extend beyond the cavities 232 and the opposite mold half 226, 230. Each core has a 25° exit on one side and this together with the inter-hinging of the cores 224, 228 allows that the spokes maintain fairly constant thicknesses that help maintain the strength of the spokes. Again, it should be noted that these cores 224, 228 are actually arranged in a circular matrix on mold 222 and that this figure shows their sections projected onto a flat plane for ease of illustration. In addition, common mold features such as ventilation to aid proper mold filling allowing trapped gases to escape and alignment features such as taper pins to facilitate mold alignment for cores 224, 226 and mold halves 226, 230 were omitted for reasons of clarity. Furthermore, the cores have been shown to be solid extensions of the mold halves 226, 230, but in reality these are often distinct inserts that are kept within the mold halves 226, 230 and which can be easily replaced if a core 224, 226 is damaged. .
    [0050] Taking a closer look at the ends 233 of cavities 232 and the ends of the telescopic cores 224, 228 it can be seen that the new design incorporates angled closure surfaces 235 found just after the ends 233 of the cavities 232 that close into the closure surfaces planes 234 that make contact or near contact with opposite or: nolde 226, 230. For this particular embodiment, the angled closure surfaces 235 are parallel with the rest of the core outlet 224, 228, but could be altered, if desired, as will be discussed further below. In addition, flat closure surfaces 234 are shown to be line-to-line or coincident between cores 224, 228 and mold halves 226, 230, but this need not necessarily be the case.
    [0051] A small opening can be provided in these areas to make sure that the total length of the core 224, 228 does not limit the protrusion of the core into the opposite mold half 226, 230, helping to ensure that the closed angled surfaces 235 do contact between each core 224, 228 and mold half 226, 230. This helps to prevent a liquid such as polyurethane from flowing into a crack if a large enough gap is created due to machining tolerances, core deflection due to transformation conditions of the mold, etc. As discussed earlier, such an opening creates unwanted burr that was previously described near the streaked edges. Furthermore, since the separation line in these areas is essentially parallel to the direction of extension of cores 224, 228, any burr will be nearly parallel to most of the bending plane of rays, which is more desirable than the orientation created by the design of previous mold, as will be explained more fully below.
    [0052] This particular modality is very successful in eliminating mold mismatch as cores 224, 228 extend beyond the ends of cavities 232, making such mismatch virtually impossible. This is true because the straight surface 238 of cores 224, 228 is forced to be tangent to the end of cavities 232 233 because it is part of the same surface that forms the angled closing surface 235.
    [0053] Turning now to figures 5A, 5B and SC, front, side and respectively cross-section views of the rays created by mold cavities just described can be seen. For clarity reasons, the tread has been omitted. Focusing on Figure 5A, the transverse shape of spokes 206', 206" can be seen, in which its external extension 204', 204" is fixed to the tread and its internal extension 210', 210" is connected to a hub or wheel 208. The thickness of the main portion of the spoke, T2os, which is relatively consistent at 4mm and the edges 212', 212" of the spoke 206', 206" where burr 214 often occurs during the molding process are illustrated. burr 214 sits near edges 212', 212" of spokes 206', 206" where partial radius 216 has been added to help reduce stress as spokes 206', 206" cycle between tension and compression as tire 200 rotates on a road surface under a vertical load. Since the cross section of spokes 206', 206" has a predetermined conical shape near the radiused edges, the distance from the neutral axis or plane 218 over which each radius 206', 206" flexes to an outer surface 220 of the radius 206', 206" is reduced, decreasing locally stresses and strains and the probability of spoke failure. In addition, the location of any burr 214 is found virtually in the neutral plane 218, reducing bending moment and stress where the burr is. found, further decreasing the possibility of fatigue failure at this point. The exact geometry of the tapered edge sections will be described later.
    [0054] Now, the orientation of any burr 214 is essentially parallel to most of the bending axis or plane 218 of radius 206, making crack initiation less likely compared to the previous radius and mold design because the thinnest part of the burr is doubled, meaning that the bending moment and associated bending stress experienced by the burr is minimized. In other words, the burr is now oriented in its most flexible configuration regarding the bending of the spokes making them less prone to cracking. However, potential burr 214 may be slightly oblique to the plane of flexion 218 locally near the edge 212 of the radius due to taper which can change the path of the plane of flexion, as shown in Figure 5C and 6. Therefore, it is contemplated that small adjustments for the closing surface can be made so that the orientation of the burr is more parallel to the bending plane 218 locally near the edge of the radius 206. This can result in an alternative orientation of the burr 214' as shown in Figure 6. Of course, that can involve a trade-off between optimizing burr orientation and avoiding mold mismatch, as changing the closing angle means that a geometry transition will be located in a mold core and if that transition does not perfectly match the position of the end of the cavity. , a small boss or corner could be created as was the case with the mold from the previous design (see figure 3A). Another benefit of changing the mold closing angle is that using a larger angle can decrease the amount of wear on the mold core or opposite mold half over which the mold core closes, reducing the amount of mold maintenance that is required.
    [0055] Focusing solely on Figure 6, the specific radius edge geometry of this embodiment of the present invention is described. The main part of radius 206 has a thickness, T206, which is approximately 4 mm. The tapered section forms an included angle, α, with the end of the radius of approximately 11.8°. There is a transition radius 240 where the conical part meets the main body of the radius which has a value of about 20 mm. The width, WT, of the conical section is about 15 mm and the partial radius value 216 at the radius edge is about 1.5 mm. These values are just an example and dimensions could be adjusted depending on tire application, mold or radius. The reason there is only a partial radius here as opposed to the full radius used in the previous mold design is that adding a full radius is not possible when using a closing angle formed by a telescopic core would require the presence of an edge tapered in the mold, which would over time break and cause molding problems as well as possible flaws on the spokes.
    [0056] Figure 7 shows an alternative radius profile that uses a progressive reduction in the radius cross section, instead of a conical section. For this version of radius 206, the thickness of the main radius, T206, which is about 4 mm, is reduced to a step thickness, TS, of approximately 2 mm. The width of the step section, Ws, can range from 4 to 1 mm. Finally, there is a series of transition radii 242, 244 between the step section and main radius sections as well as the partial radius 216 found at the edge of the radius. The value of all these radii can be approximately 1.5 mm. These values are just an example and dimensions could be adjusted depending on tire application, mold or radius. This modality provides the same advantages as shown in Figure 6.
    [0057] Note that the present invention also includes other radius geometries not disclosed or fully described in this document. For example, as shown in Figure 8, it is possible that the radius thickness does not need to be reduced near the edge of the radius and a radius similar to the original radius design could be molded using telescopic cores 128 minus the 300 portion of the radius edge of the radius that is close to angled closure surfaces 235 to prevent the creation of a tapered edge in the mold. As can be imagined, adding imaginary area 300 to mold half 126 would create a tapered edge that would quickly break. In other words, changing the position and/or orientation of the burr as well as alleviating the mold mismatch may be sufficient to prevent spoke failure and would be considered sufficient to practice the present invention. On the other hand, reducing the cross section of the ends of the spokes may be sufficient to avoid failure of the spokes being considered sufficient to practice the present invention. In many situations, both techniques can be used simultaneously.
    [0058] In conclusion, it is to be understood that the present invention includes various other modifications that can be made to the exemplary embodiments described herein that are within the scope of the present invention as defined by the appended claims. For example, the specific examples given involved the use of polyurethane, but it is contemplated that other thermoplastic or thermoset materials could be used. Also, the mold discussed here was a rotary mold, but other casting or molding technologies could be used like injection molding. Likewise, the present invention can be applied to any tire that has spokes, whether it uses an internal gas or not. These and other embodiments are within the principles and scope of the present invention.
    权利要求:
    Claims (17)
    [0001]
    1. Tire having an axial direction and a radial direction characterized in that it comprises a tread and a spoke, said spoke having main body geometry and edge geometry, said edge geometry found at an end of the spoke in the said axial direction having a reduced cross-sectional area compared to the geometry of the main body.
    [0002]
    2. Tire according to claim 1, characterized in that the thickness of the geometry of the main body of the spoke is 4 mm.
    [0003]
    3. Tire according to claim 2, characterized in that the edge geometry also includes a circular part at the end of the radius, whose radius has a value of 1.5 mm.
    [0004]
    4. Tire according to claim 3, characterized in that said circular part is found only on one side of the radius width.
    [0005]
    5. Tire according to claim 1, characterized in that the reduced cross section of the radius edge geometry includes a tapered taper part.
    [0006]
    6. Tire according to claim 5, characterized in that the conical part forms an angle included with the geometry of the main body of 11.8 degrees.
    [0007]
    7. Tire according to claim 6, characterized in that it also includes a circular transition part found between the geometry of the main body and the conical part whose radius has a value of 20 mm.
    [0008]
    8. Tire according to claim 5, characterized in that the width of the tapered part of the edge geometry is 15 mm.
    [0009]
    9. Tire according to claim 1, characterized in that the reduced cross section of the edge geometry includes a step portion.
    [0010]
    10. Tire according to claim 9, characterized in that the thickness of the step portion is 2 mm.
    [0011]
    11. Tire according to claim 10, characterized in that the width of the step portion varies from 4 - 11 mm.
    [0012]
    12. Tire according to claim 11, characterized in that the edge geometry further comprises a circular transition part whose radius has a value of 1.5 mm.
    [0013]
    13. Tire having an axial direction and a radial direction, characterized in that it comprises a tread and a spoke, said spoke having leading edge geometry and a spoke edge geometry along an extension of the spoke in said axial direction that has at least one side that lacks a blend, chamfer, or other transition geometry on the edge of the radius, where the radius has a neutral bending plane and also has a burr found on the edge of the radius that is oriented parallel to the so-called neutral bending plane.
    [0014]
    14. Tire according to claim 13, characterized in that the radius edge geometry further includes a portion with a reduced cross section at the spoke edge.
    [0015]
    15. Mold for forming a spoke for a tire, said tire having a radial direction and an axial direction, said spoke having a main body geometry and an edge geometry, said edge geometry found at an end of the radius in the axial direction having a reduced cross-sectional area compared to the main body geometry, said mold characterized in that it comprises a first mold half, a second mold half, cavities and telescopic cores having an angled closure surface which extends beyond the cavities and into a mold half and contacts said mold half at said angled closure surface.
    [0016]
    16. Mold according to claim 15, characterized in that the cavities have a circular part in its final portion opposite the side of the cavity that is close to an angled closing surface.
    [0017]
    17. Mold according to claim 15, characterized in that the cavities have a free angle and the closure surface has the same angle.
    类似技术:
    公开号 | 公开日 | 专利标题
    BR112013004931B1|2021-06-29|RADIUS EDGE GEOMETRY FOR A NON-PNEUMATIC TIRE
    BR102014005515B1|2020-08-18|METHOD FOR MANUFACTURING TIRE AND TIRE MANUFACTURED BY THIS METHOD
    BR112016026818B1|2021-06-01|NON-PNEUMATIC TIRE WITH PARTIALLY COMPLIANT HUB
    BR112013027875B1|2021-04-06|COMPACTING AND INJECTION MOLD FOR A FIBER PREFORM FOR USE IN THE MANUFACTURE OF A COMPOSITE MATERIAL TURBINE ENGINE PART AND MOLD ASSEMBLY METHOD
    US20050110194A1|2005-05-26|Tire forming mold and pneumatic tire producing method using the same
    JP5851449B2|2016-02-03|Non pneumatic tire
    JP5894964B2|2016-03-30|Non pneumatic tire
    BR102013001259B1|2021-07-06|anti-oval tool, wind turbine blade, wind turbine, method of reducing the ovality of a wind turbine blade root and use of a tool
    JP6741765B2|2020-08-19|Tire vulcanization mold
    JP6737607B2|2020-08-12|Method of manufacturing plate with frame
    JP6721701B2|2020-07-15|Tire vulcanization mold
    JP5484893B2|2014-05-07|Tire model creation device and program
    BR112014011749B1|2020-12-01|mold with sectors for molding and vulcanizing a tire
    BRPI0822774B1|2020-08-25|method for preparing a portion of a tire for repair.
    KR102077252B1|2020-02-14|Bladder curing mold
    KR20170128437A|2017-11-22|Pneumatic tire
    US1417509A|1922-05-30|Vulcanizing mold for tire casings
    TW202146216A|2021-12-16|Bicycle rim made of composite material with wings having reinforced structure
    JP3958380B2|2007-08-15|Unvulcanized tread rubber material for pneumatic tire and method for manufacturing pneumatic tire
    KR20130063436A|2013-06-14|Bladder for vulcanizing a tire
    JP2019206238A|2019-12-05|Rubber crawler and manufacturing method of the same
    CN105492193A|2016-04-13|Retreaded tire treads having improved submerged voids
    US1697703A|1929-01-01|Vulcanizing mold
    JP5894966B2|2016-03-30|Non-pneumatic tire and method for manufacturing non-pneumatic tire
    US1188004A|1916-06-20|Collapsible core.
    同族专利:
    公开号 | 公开日
    CN103068592A|2013-04-24|
    JP2015024814A|2015-02-05|
    CA2880963A1|2012-03-08|
    RU2544026C2|2015-03-10|
    JP2013536125A|2013-09-19|
    ZA201301117B|2014-05-28|
    WO2012030519A3|2012-07-05|
    EP2611629A2|2013-07-10|
    JP5934314B2|2016-06-15|
    EP2611629B1|2020-01-08|
    RU2013114257A|2014-10-10|
    WO2012030519A2|2012-03-08|
    BR112013004931A2|2016-08-16|
    US20130240097A1|2013-09-19|
    CA2880963C|2016-04-12|
    EP2611629A4|2014-02-19|
    CA2880961A1|2012-03-08|
    MX2013002328A|2013-03-18|
    US20160107402A1|2016-04-21|
    CA2809791C|2015-04-28|
    CN103068592B|2016-01-20|
    JP5615977B2|2014-10-29|
    US9254716B2|2016-02-09|
    CA2809791A1|2012-03-08|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR362164A|1906-01-04|1906-06-09|Giuseppe Sacripanti|Wheel for automobiles, etc.|
    FR365216A|1906-04-13|1906-09-05|Pierre Boucher|Elastic tire wheel|
    FR421228A|1909-12-15|1911-02-17|Gustave Frantz Lyon|Elastic wheel for all vehicles|
    FR423516A|1910-12-06|1911-04-20|Jean Kurtze|Elastic metal crown to replace rubber inner tubes|
    US1498711A|1922-05-29|1924-06-24|Paul R Yeazel|Resilient tire|
    US2713513A|1952-10-02|1955-07-19|Lyon George Albert|Wheel cover|
    US3509603A|1967-01-09|1970-05-05|Globe Union Inc|Apparatus for fabricating battery cases|
    US4235410A|1979-02-22|1980-11-25|Mccord Corporation|Reinforcement panel and mold for making same|
    US4387070A|1981-01-22|1983-06-07|Brown Group Recreational Products, Inc.|Method for making a wheel with an integral tire|
    JPS6012306A|1983-06-30|1985-01-22|Hashimoto Forming Co Ltd|Forming die for wheel cover|
    CA2011473C|1989-05-22|1998-01-06|Richard L. Palinkas|Trapezoidal non-pneumatic tire with supporting and cushioning members|
    KR920009858B1|1989-03-20|1992-11-02|산코우 고오세이 쥬시 가부시끼가이샤|Integrally moulded cross-flow fan and method of making the same by radially with drawing gap-forming molds|
    US4945962A|1989-06-09|1990-08-07|The Uniroyal Goodrich Tire Company|Honeycomb non-pneumatic tire with a single web on one side|
    US5223599A|1992-04-10|1993-06-29|Uniroyal Chemical Company, Inc.|Polyurethane elastomer and non-pneumatic tire fabricated therefrom|
    KR0156970B1|1995-08-01|1998-12-15|유기범|Apparatus to make multifiber connector for connecting optical cable|
    US6086161A|1997-06-18|2000-07-11|Nimble Bicycle Company|High performance broad application wheel|
    EP1318921B1|2000-09-11|2004-12-01|Dow Global Technologies Inc.|Method and device for preparing a tire support|
    CA2458002C|2001-08-24|2010-08-17|Michelin Recherche Et Technique S.A.|Non-pneumatic tire|
    US20030160362A1|2002-02-22|2003-08-28|Lighthouse Industries, Inc.|Method of injection molding an article having an array of openings|
    JP4873277B2|2006-09-20|2012-02-08|ソシエテドテクノロジーミシュラン|Variable stiffness spokes for non-pneumatic assemblies|
    US7832459B2|2007-08-30|2010-11-16|Phillips Plastics Corporation|Methods, tools, and products for molded ordered porous structures|
    JP5084637B2|2008-06-26|2012-11-28|東洋ゴム工業株式会社|Non-pneumatic tire mold and non-pneumatic tire manufacturing method|
    CA2880963C|2010-09-01|2016-04-12|Michelin Recherche Et Technique S.A.|Spoke edge geometry for a non-pneumatic tire|
    WO2012094005A1|2011-01-06|2012-07-12|Michelin Recherche At Techniques S.A.|Apparatus for casting a non- pneumatic tire|
    US8991455B2|2011-08-30|2015-03-31|Compagnie Generale Des Etablissements Michelin|Molded article and venting assembly for a rotating mold|CA2880963C|2010-09-01|2016-04-12|Michelin Recherche Et Technique S.A.|Spoke edge geometry for a non-pneumatic tire|
    JP5879089B2|2011-10-20|2016-03-08|株式会社ブリヂストン|Non-pneumatic tire manufacturing method|
    CN104302488B|2012-04-05|2016-12-21|米其林集团总公司|There is the spoke of tire optimizing thickness for improving ruggedness|
    US9266388B2|2012-09-27|2016-02-23|Mtd Products Inc|Non-pneumatic tire|
    US9511631B2|2012-12-26|2016-12-06|Bridgestone Corporation|Non-pneumatic tire|
    JP6051037B2|2012-12-26|2016-12-21|株式会社ブリヂストン|Non pneumatic tire|
    EP3007909A4|2013-06-15|2017-03-01|Ronald Thompson|Annular ring and non-pneumatic tire|
    JP6152036B2|2013-10-21|2017-06-21|株式会社ブリヂストン|Non pneumatic tire|
    EP3142865B1|2014-05-16|2020-10-28|Basf Se|Thermoplastic wheel hub|
    JP6231947B2|2014-06-09|2017-11-15|住友ゴム工業株式会社|Spoke casting equipment for airless tires|
    WO2016003799A1|2014-07-01|2016-01-07|Mtd Products Inc|Vibration dampening assembly for a walk-behind working tool|
    WO2016099476A1|2014-12-17|2016-06-23|Compagnie Generale Des Etablissements Michelin|Method and apparatus for molding non-pneumatic wheels|
    WO2016099480A1|2014-12-17|2016-06-23|Compagnie Generale Des Etablissements Michelin|A non-pneumatic tire with integrated polymeric flexible wheel center mount|
    WO2016099474A1|2014-12-17|2016-06-23|Compagnie Generale Des Etablissements Michelin|Method and apparatus for molding non-pneumatic wheels|
    FR3031931B1|2015-01-22|2017-02-03|Michelin & Cie|PNEUMATIC TYPE DEVICE FOR VEHICLE|
    CA2976055A1|2015-02-04|2016-08-11|Advancing Mobility, Llc.|Non-pneumatic tire and other annular devices|
    USD770539S1|2015-06-16|2016-11-01|Michelin Recherche Et Technique S.A.|Tire|
    CN108136835B|2015-10-09|2019-11-22|株式会社普利司通|Non-inflatable tyre|
    JP6630114B2|2015-10-19|2020-01-15|株式会社ブリヂストン|Non-pneumatic tire, mold and method of manufacturing non-pneumatic tire|
    CN108430795B|2015-10-30|2021-06-15|米其林集团总公司|Spoke for non-inflatable wheel|
    JP1579281S|2016-10-28|2017-06-19|
    JP1576394S|2016-10-28|2017-05-15|
    USD832770S1|2016-10-28|2018-11-06|Bridgestone Corporation|Non-pneumatic tire|
    WO2018227276A1|2017-06-15|2018-12-20|Camso Inc.|Wheel comprising a non-pneumatic tire|
    WO2019005125A1|2017-06-30|2019-01-03|Compagnie Generale Des Etablissements Michelin|Edge guard for non-pneumatic wheel|
    USD856914S1|2017-09-07|2019-08-20|Compagnie Generale Des Etablissements Michelin|Set of wheel spokes for a non-pneumatic tire|
    JP1654441S|2019-05-23|2020-03-09|
    JP1654471S|2019-05-23|2020-03-09|
    JP1654332S|2019-07-12|2020-03-09|
    WO2022005741A1|2020-06-29|2022-01-06|Bridgestone Americas Tire Operations, Llc|Non-pneumatic tire having support structure with stress-concentration reduction features|
    法律状态:
    2018-01-09| B25A| Requested transfer of rights approved|Owner name: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN (FR |
    2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-09-17| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-07-28| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]|
    2021-05-11| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-06-08| B350| Update of information on the portal [chapter 15.35 patent gazette]|
    2021-06-29| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 16/08/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US37935110P| true| 2010-09-01|2010-09-01|
    US61/379,351|2010-09-01|
    PCT/US2011/047864|WO2012030519A2|2010-09-01|2011-08-16|Spoke edge geometry for a non-pneumatic tire|
    [返回顶部]