• 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:

    公开号:BR112013002100B1
    申请号:R112013002100-4
    申请日:2011-07-26
    公开日:2018-06-19
    发明作者:Denis Laurent；Denis Gilles
    申请人:Denis Gilles；Denis Laurent；
    IPC主号:
    专利说明:

    (54) Title: CUTTING TOOTH, CUTTING ASSEMBLY, AND CLEANER (51) Int.CI .: A01D 34/52; A01D 34/73; B23D 61/06; B27B 33/12; B27G 13/04; B27G 13/10 (30) Unionist Priority: 10/04/2010 CA 2,717,479, 10/8/2010 US 12 / 924,862, 7/26/2010 US 61 / 344,453 (73) Holder (s): GILLES DENIS. LAURENT DENIS (72) Inventor (s): LAURENT DENIS; GILLES DENIS
    1/14
    Descriptive Report of the Invention Patent for CUTTING TOOTH, CUTTING ASSEMBLY, AND MOWING.
    Field of the Invention [001] The present invention relates to a brush cutter, more particularly, to a cutting set and the cutting tooth for it.
    Background [002] Brush cutters employing a cylindrical rotating drum with cutting assemblies mounted on the drum, the drum mounted in front of a vehicle or on a boom in a vehicle, are known. The cutting sets generally comprise a mounting block fixed to the drum with a cutting tooth detachably mounted on the block. Since the mounting blocks and the teeth in them are exposed on the surface of the drum, the brushcutters require frequent maintenance when replacing damaged elements of the cutting sets and maintaining the cutting teeth wire.
    [003] The brushcutters are known, which employ a cylindrical rotating drum with spaced annular protective collars mounted on the drum, and with a cutting assembly partially mounted on the peripheral edge of each collar, so that at least a part of the assembly is protected. However, the sets extend laterally from the collars and the tooth sets often make initial contact with the unsupported side sections of the sets during a cut, resulting in frequent damage to the sets and / or collars.
    [004] The brushcutters are also known, which employ a rotating cylindrical drum with spaced annular protection collars mounted on the drum and with cutting sets mounted between adjacent collars on the drum. The cutting sets have a tooth mounted in front of a mounting block, the block attached to the drum
    Petition 870180020519, of 03/14/2018, p. 7/31
    2/14 and necklaces and usually below the peripheral edge of the necklaces. The tooth extends upward from the front of the block and is angled forward above the collars. The mounting blocks are well protected between and below the outer edge of the collars. The teeth, however, extend above the collars and are flexed to extend upward and forward. If the teeth extend too far upward above the collars and mounting blocks, the teeth will be subject to high bending forces resulting in early tooth failure. If the teeth do not extend too far above the collars and the mounting block, the teeth will have a small bite when in the brush cutter and thus will not be very efficient.
    Summary [005] Therefore, it is an objective of the present invention to provide an improved cutting tooth and cutting set.
    [006] Therefore, according to the present invention, a cutting tooth is provided which comprises a blade-type cutting section with opposite top and bottom surfaces, opposite front and rear ends defining a length between them, and opposite sides defining a width between them, a mounting section extending downwards from the bottom surface of the cutting section with at least a top portion of the mounting section adjacent to the cutting section defining a width less than that of the cutting section cut, the mounting section having retaining members that extend laterally spaced from the cutting section and adapted to be retained in a mounting block, at least a quarter of the length of the cutting section extending in front of a front of the mounting section , with the front end of the cutting section ending at a cutting edge.
    [007] Also, according to the present invention, it is provided
    Petition 870180020519, of 03/14/2018, p. 8/31
    3/14 a cutting assembly comprising a mounting block for attaching to a rotating brush cutter, the block having a front surface and a top surface, a slot extending to the block backwards from the front surface to the along only part of a length of the block, the slot being opened at the top surface, the slot having a cross section that includes a laterally enlarged area spaced from the top surface, and a cutting tooth that has a cutting section of top with opposite front and rear ends defining a length between them, a mounting section extending downwardly from a bottom surface of the cutting section, the mounting section having a spaced retaining portion of the cutting section with a section complementary to that of the slot, the tooth connectable to the mounting block by sliding the retaining portion firmly into the slot in the block with the rest of the tooth resting firmly n the top surface of the block, the retaining portion of the mounting section engaged in the laterally enlarged area preventing the tooth from moving upwards through the slot, the cutting section, when the tooth is mounted on the block, having at least a quarter of its length extending forward from the front of the block with the front end ending at a cutting edge. [008] Also, according to the present invention, a brush cutter is provided which comprises: a rotating drum, the drum having a central tubular member with a cylindrical surface, a plurality of collars mounted on the cylindrical surface of the member, the collars being spaced along a longitudinal geometric axis of the member and extending transversely to the longitudinal geometric axis of the member, each collar having a cutout extending inwardly from a peripheral edge of the collar, at least one cutting assembly mounted on each adjacent pair of necklaces, the pair of
    Petition 870180020519, of 03/14/2018, p. 9/31
    4/14 collars having their cutouts aligned, each cut set having a mounting block mounted between and on the two collars on edges defining the cutouts, the block having a front surface and a top surface, the block having a slit that extends backwards from the front surface over only part of a block length, the slot opening upwards on the top surface with a wider section of the slot being set away from the top surface, and a cutting tooth that has a top blade type cutting section with opposite front and rear ends defining a length between them, a mounting section extending down from the cutting section and defining a spaced retaining portion of the cutting section and having a shape complementary to that of the slot, the cutting tooth detachably mounted on the block with the retaining portion sliding firmly into the slot in the block with the rest of the tooth resting firmly on the top surface of the block, the cutting section extending at least substantially along a tangential direction of the collars and located at least partially radially outward from the peripheral edges of the collars, the mounting section extending for at least a quarter in length from there in front of the block, the front end of the cutting section ending at a cutting edge.
    [009] Also, according to the present invention, a cutting set is provided for a brush cutter that has a mounting block for attaching to a rotating brush cutter element, the block having a slot that extends to the block from a front surface of the same, the slit open in a top surface of the block, a cutting tooth that has a cutting section, a mounting section extending down from the bottom of the cutting section, the cutting tooth mounted on the block by inserting at least one
    Petition 870180020519, of 03/14/2018, p. 10/31
    5/14 portion of the mounting section in the slot from the front surface of the block with the cutting section adjacent to the top surface of the block, the cutting section having opposite front and rear ends defining a length between them, and having at least a quarter of the length protruding from the front of the block, the front end defining a cutting edge, and means of cooperation in the tooth and in the block for retaining the tooth in the slot.
    [0010] In particular, the cutting tooth is provided having an integral blade-type cutting section with a mounting section on the tooth. The cutting section is spaced from the mounting section by a connector section and extends in front of the mounting and connection sections to end at a cutting edge. The cutting tooth is mounted on a mounting block to form a cutting set for a brush cutter. The mounting block is a parallelepiped adapted for mounting between adjacent protective collars on a brush cutter drum. The block is mounted on the peripheral edge of the collars above the drum surface. The cutting tooth and the mounting block are designed to have the cutting tooth mounted quickly and easily, although extremely securely, on the mounting block. The way of mounting the tooth in the block makes replacement quick and simple. The cutting tooth is mounted to have the cutting section above the mounting block with the cutting section extending to the front of the mounting block. With the assembly mounted on the protective collars, the tooth cutting section, located above the collars, allows the tooth to fit and cut more of the bush at each rotation, making it more efficient. The tooth is assembled to have the cutting section generally located tangentially with respect to the cutting circle described by the cutting edge of the tooth, during an operation. The cutting and impact forces are thus transmitted mainly in compression against the cutting section. The tangential position and
    Petition 870180020519, of 03/14/2018, p. 11/31
    6/14 extended from the cutting section in and from the mounting block increases the cutter's ability to hold more weeds, thereby increasing efficiency. It also positions the cutting edge in a more exposed position making sharpening easier. The tangential position also ensures that the cutting edge remains generally in the same radial location after sharpening, thus minimizing any reduction in the message due to the shortening of the blade. The tooth is preferably radially spaced out from the periphery of the collars at least about a distance equal to half the thickness of the teeth. The cutting section of the tooth is additionally dimensioned and positioned to have the cutting edge at least one third of the length of the cutting section in front of the mounting block.
    Brief Description of the Drawings [0011] A reference will now be made to the associated drawings, showing by way of illustration, a particular modality of the present invention, and in which:
    Figure 1 is a perspective view of the brush cutter; Figure 2 is a final view of the brush cutter; Figure 3 is a side detail view of a necklace; Figure 4 is a cross-sectional view taken along line 4-4 in Figure 2 showing a cutting assembly mounted on two adjacent cutter collars;
    Figure 5 is an exploded perspective view of the section set;
    Figure 6 is a front view of the mounting block; Figure 7 is a side view of an assembly block; Figure 8 is a cross-sectional view of the mounting block taken along line 8-8 in Figure 6;
    Figure 9 is a front view of a cutting tooth;
    Petition 870180020519, of 03/14/2018, p. 12/31
    7/14 Figure 10 is a side view of the cutting tooth; Figure 11 is a perspective view of a modified section set;
    Figure 12 is an exploded perspective view of the assembly shown in Figure 11;
    Figure 13 is a perspective view of another modified section set;
    Figure 14 is an exploded perspective view of the assembly shown in Figure 13; and Figure 15 is a view similar to Figure 8 with a modification of the mounting block and the cutting tooth.
    Detailed Description of Particular Modalities [0012] With reference to Figures 1 to 3, a brush cutter 1 according to a particular modality is shown. Brush cutter 1 is a rotating drum 3 including a central tubular member 5 that has a cylindrical surface 7. Annular collars 9 are mounted on the tubular member 5. In a particular embodiment, the collars are of equal size and are equally spaced and transversal to the longitudinal central geometric axis 11 of the tubular member 5. Each collar 9 has an internal circular periphery 13 dimensioned to only receive the member 5 from there, and an external periphery 15. In the embodiment shown, the external periphery 15 is circular, but, alternatively, it could have helical sections. Each 9 is welded to the surface 7 of the tubular member 5. The drum 3 is mounted at its ends in a well-known manner in a frame (not shown) that carries the drum, and the drum is rotatable in the frame around the geometry axis 11 by suitable means of activation (not shown).
    [0013] Each collar 9 has a first indentation 17 that extends radially inwardly from the outer periphery 15 of the collar. In the modality shown, cutout 17 has a format generally semiPetition 870180020519, of 03/14/2018, p. 13/31
    8/14 circular and extends approximately halfway through the collar. A second cutout 19 is located behind and adjacent to each first cutout 17 on each collar 9, the second cutout 19 intercepting the rear of the first cutout 17 and shown here having an approximately rectangular shape. The second cutout 19 is generally transverse to a radial line 23, extending from the geometrical axis 11 of rotation of the drum, the radial line 23 bisecting cutout 19. The first cutout 17 helps with chip dispersion during a brushcutter operation . The second cutout 19 is used to mount a cutter set 25 on adjacent collars, as will be described. [0014] Each pair of adjacent collars 9 supports at least one cut set 25 between them. Each cutting set 25 is mounted on the second cutouts 19 of the adjacent collars, the cutouts of which are aligned, as will be described. Thus, as shown in Figure 1, the adjacent collars 9A-9B support a cutting assembly 25A between them. The next adjacent collars 9B-9C support a 25B cutter set between them. Each pair of adjacent collars supports at least one cut set. Each cutting set is offset at an angle to the immediately adjacent cutting sets. The amount of angular displacement can vary.
    [0015] Each cutting set 25 includes a mounting block 27 that has a generally parallelepiped shape, as shown in Figures 4 and 5. In the embodiment shown, the length of block 27 is almost the same as its width, and the block it can have a thickness of around half its length. Block 27, as shown in Figures 6 to 8, has a slit 29 that extends backwards from the front surface 31 of the block. The front surface 31 of the block is the end of the block facing the direction of rotation of the block when the brush cutter operates. Slit 29 extends, for example, more than half the way to the block, towards 870180020519, of 03/14/2018, p. 14/31
    9/14 tion to the outlet end 33 of the block. Slit 29 opens in the top surface 35 of the block. The slot 29 has a retaining means 39 to assist in retaining a cutting tooth in the slot. Retention means 39 may comprise a wider portion 37 in the slot than the remainder of the slot. The widest portion 37 is preferably at the bottom of the slot 29. The slot 29 is shaped to hold a tooth in the slot against centrifugal forces during a rotation of the drum. The slot 29 shown has an inverted T shape, but other shapes achieving the same result as the T slot can be used. The sides 41 of the block 27 are cut out at their bottoms for the formation of edges 43 just above the bottom 45 of the block. A threaded hole 47 extends through the outlet end 33 of the block through an end wall 49 opening into slot 29. [0016] Mounting block 27 is adapted to be mounted between two adjacent collars 9, having the edges 43 leaning on the bottom edge 51 of the second cutouts 19, as shown in Figures 2 and 4. In a particular embodiment, block 27 is welded to collars 9 around cutouts 19 with the block being welded to two collars 9 in edges 43 and part of their inlet and outlet ends 31, 33. When welded, the top 35 of block 27 is generally aligned with the outer peripheries 15 of collars 9, as shown in Figure 2. When attached to collars, the block 27 is spaced from the surface 7 of the tubular member 5, forming a chip dispersion space 53 between the block 27 and the tubular member 5. [0017] The cutting set 25 includes a cutting tooth 57. The cutting tooth 57 , as shown in Figures 9 and 10, has a the blade-type cutting section 59 at the top, and a mounting section 61 that extends down from the bottom 62 of the cutting section 59. The mounting section 61 is narrower and shorter than the cutting section 59 and centrally located with respect to it. The mounting section Petition 870180020519, of 03/14/2018, p. 15/31
    10/14 gem 61 has lateral retaining means 63 spaced from the cutting section 59. The retaining means 63 can be in the form of flanges 65 at the bottom of the mounting section 61 extending laterally from its sides. Mounting section 61 fits firmly into slot 29 with flanges 65 adapting to bottom section 37 of the slot. The remainder of the tooth rests firmly on the top 35 of the mounting block 27 with a cutting portion 66 projecting to the front of the block. In the embodiment shown, when tooth 57 is mounted on block 27, a threaded hole 67 at the rear of connection section 63 is aligned with and adjacent to threaded hole 47 on end wall 49 of block 27. A screw 68 connects tooth 57 to block 27.
    [0018] The cutting section 59 has a generally flat blade shape and, in a particular embodiment, is almost as wide as its length, and is particularly straight. The cutting section 59 is relatively thick, for example, about half an inch (12.7 mm). In a particular mode, its thickness varies between 3/16 inches (4.76 mm) and 5/8 inches (15.88 mm). The front of the cutting portion 66 is beveled to form a cutting edge 73. Preferably, the top surface 75 is beveled slightly in front of the cutting section, as shown by the beveled surface 77. In one particular embodiment, the beveled surface 77 is tilted down from the top surface 75 at an angle Θ of 8 to 10 °. This angle provides clearance for the cutting section when cutting to minimize drag. The cutting section 59 is also beveled upwards from the bottom surface 62 by a beveled surface 81. In a particular embodiment, the beveled surface 81 extends upwards at an angle and between 45 and 50 °. The beveled surfaces 77, 81 meet almost a third of the way down from the top surface 75, for the formation of the edge
    Petition 870180020519, of 03/14/2018, p. 16/31
    11/14 cut 73.
    [0019] At least around a quarter, in a particular modality around a third, and in another particular modality, up to half the length of the cutting section 59 extends in front of the connection section 63 of block 27. Preferably, the projection portion 66 of the cutting section 59 increases in thickness slightly from the rear to the front and is cut out at the front, as shown in 83. The increased thickness raises the cutting edge 73 well above of collars 9 and the cutout provides greater access to cutouts 17, 19. Tooth 57 is positioned and dimensioned to have the cutting edge 73 following a circular path 87 that has a longer radius R1 than the outer radius R of collars 9 , as shown in Figure 2, and, in a particular embodiment, from 12.7 mm (half inch) to 25.4 mm (one inch) longer. [0020] The cutting section 59 of tooth 57 is shown and described as being relatively straight, but it can be curved down slightly at the front, as shown in 89, to minimize drag during cutting. The cutting section 59 can also be slightly curved across its length, if desired. The cutting section 59 is made long enough to ensure that it is securely attached to the mounting section 61, and still long enough to protrude in front of block 27 by at least a quarter of its length, as discussed above. Having the cutting section 59 above the block 27 and the collars, and extending forward in general tangentially from the block, can allow the brushcutter to have a deeper bite when rotating and better accumulate the bush to be cut. Having the tooth generally extending tangentially to the front of the block can also allow it to be sharpened many times, without greatly changing its bite depth, so that it retains its efficiency. The cutting edge 73 does not move
    Petition 870180020519, of 03/14/2018, p. 17/31
    12/14 too far inward from the original cutting circle 87, as the tooth shortens when sharpened. The tooth is also generally aligned with the cutting force exerted on the tooth, the tooth taking the cutting force primarily as compression. The arrangement also protects the mounting block when locating the tooth in an efficient cutting position.
    [0021] The tooth 59 preferably described is entirely forged or cast as a single unit. Alternatively, the cutting section can be formed separate from the assembly section. In one embodiment, shown in Figures 11 and 12, a platform section 91 is provided at the top of the mounting section 61 to receive the cutting section 57A. The platform and mounting sections 91, 61 form an integral unit 93, which can be forged or cast. Cutting section 57A in this embodiment can be slightly thinner and can be welded to the flat top 94 of platform section 91. In another embodiment, shown in Figures 13 and 14, cutting section 57B can be screwed into the flat top 94 of the platform section 91 with a screw 95. The platform section 91 could have a shoulder 97 at its end, against which the cutting section 57B would be confined. In both embodiments, using a platform section, the cutting tooth is more like a plate than a forged cutting tooth. The platform not only serves to mount the tooth in the block, but also serves to raise the cutting edge of the tooth in relation to the collars, for the provision of a more efficient operation. [0022] To improve tooth stability, bottom section 37 'of slot 29' in mounting block 27 'can taper slightly from the inlet end 31' of the block, narrowing towards the end of outlet 33 ', as shown in Figure 15. More specifically, the upper surfaces 101 of the bottom section 37' taper towards the bottom surface 103 in
    Petition 870180020519, of 03/14/2018, p. 18/31
    13/14 a movement towards the outlet end 33. The bottom flanges 65 'in the mounting section 61 of the tooth 57' are also tapered from its inlet end 69 'towards its outlet end 67'. More specifically, the upper surfaces 105 of the flanges 65 'are tapered to the same degree as the tapered surfaces 101 in the lower section of the mounting block 27' are tapered. Alternatively, although not shown, the upper surface 101 and the bottom surface 103 can be similarly angled downwardly towards the outlet end 33 '(i.e., the upper surface 101 being as shown in Figure 15 and the surface of bottom being parallel or approximately parallel to it), with flange 35 being tilted down similarly towards outlet end 67 ', while maintaining a constant or approximately constant thickness. In both cases, as a result, the tooth, as its mounting section 61 'approaches completely the entrance in the slot 29' of the block 27 ', firmly engages the block between the slot portion 37' and the upper surface 35 'of the block. Impact forces generated during cutting only serve to wedge the tooth more firmly into the block.
    [0023] For further improvement of tooth stability during cutting, the upper surfaces 111, 113 of the mounting block 27 can be beveled inwards towards the slot 29 at a small angle 'D' of around fifteen degrees, as shown in Figure 6. The upper portion of the mounting section 61 may have its sides tapered out, prior to joining the cutting section 59 close to the sides of the cutting section. The tapered sides form bottom surfaces 115, 117 that are angled outward and upward on each side away from the slit at an angle to match the bevel angle of surfaces 111, 113. Bottom surfaces 115, 117 of the member connection cables 57 will be seated aligned on the surfaces
    Petition 870180020519, of 03/14/2018, p. 19/31
    Beveled upper 14/14 111, 113 of block 27, minimizing a lateral sway of the connecting member 57 and the attached tooth 57 to any side during cutting. Surfaces 111, 113 can be formed, instead, at the bottom of platform 91, if a platform is used in place of a forged tooth.
    [0024] The cutting tooth can advantageously have an extended life, can allow easier tooth installation and replacement, can increase the efficiency of the brush cutter, and / or can reduce maintenance. The cutting set that incorporates the improved cutting tooth into a mounting block can easily, though safely, mount the tooth, while locating it in an efficient cutting position. As mentioned above, the brushcutter that incorporates the tooth and the cutting set can allow an efficient cutting with the tooth capable of removing larger 'bites' from the bush than normal, thus helping to make the machine more efficient. The teeth can also be positioned for easy replacement and assembly and for easy sharpening. Having the brushcutter positioning the teeth in such a way as to have the cutting section of the tooth approaching a tangential position in relation to the peripheral edge of the collars can help the cutting edge retain its radial distance from the center of rotation of the edge, even after numerous sharpenings, which shorten the tooth.
    [0025] The modalities of the invention described above are intended to be examples. Those skilled in the art, therefore, will appreciate that the preceding description is only illustrative, and that various alternative configurations and modifications can be discerned, without departing from the spirit of the present invention. Therefore, it is intended that the present invention involves all these alternative configurations, modifications and variances which fall within the scope of the appended claims.
    Petition 870180020519, of 03/14/2018, p. 20/31
    1/6
    权利要求:
    Claims (20)
    [1]
    1. Cutting tooth comprising a blade-type cutting section (59, 57A, 57B) with opposite top and bottom surfaces (75, 62), opposite front and rear ends defining a length between them, and opposite sides defining a width between them, the leading end of the cutting section (59, 57A, 57B) ending at a cutting edge (73), a mounting section (61, 61 ') extending downwards from the bottom surface ( 62) of the cutting section (59, 57A, 57B) characterized by the fact that at least a top portion of the mounting section (61, 61 ') adjacent to the cutting section defines a smaller width than that of the cutting section (59, 57A, 57B), the mounting section (61, 6Γ) has retaining members (63, 65) that extend laterally spaced from the cutting section (59, 57A, 57B) and adapted to be retained in a mounting block (27, 27 '), and at least a quarter of the length of the cutting section (59, 57A, 57B) extends and in front of a front of the assembly section (61.61 ').
    [2]
    2. Tooth, according to claim 1, characterized by the fact that the retaining members include a pair of symmetrical bottom flanges (65), one of the flanges (65) extending from each side of the section of mounting (61.61 ').
    [3]
    3. Cutting tooth according to claim 2, characterized in that a distance between the bottom surface (62) of the cutting section (59, 57A, 57B) and a top surface of each flange (65) progressively increases from the front to the rear of the mounting section (61, 6Γ) to define a tapered shape.
    [4]
    Cutting tooth according to any one of claims 1 to 3, characterized in that the top portion of the mounting section (61, 6Γ) is connected to the cutting section (59, 57A,
    Petition 870180020519, of 03/14/2018, p. 21/31
    2/6
    57Β) through angled surfaces (115, 117) which are angled slightly upwards and outwards on each side.
    [5]
    Cutting tooth according to any one of claims 1 to 3, characterized in that the cutting section (59, 57A, 57B) is a separate member from the mounting section (61, 61 ') and fixed to it.
    [6]
    6. Cutting tooth, according to claim 5, characterized by the fact that the assembly section (61, 6Γ) has a platform section (91) integral with the top portion and extending laterally from there, the top portion being fixedly mounted on the cutting section (57A, 57B) through the platform section (91).
    [7]
    Cutting tooth according to any one of claims 1 to 4, characterized in that the cutting section (59, 57A, 57B) and the mounting section (61, 61 ') are formed from a single piece .
    [8]
    Cutting tooth according to any one of claims 1 to 7, characterized in that the thickness of the cutting section (59, 57A, 57B) is between 4.76 mm (3/16 inches) and 15, 88 mm (5/8 inches).
    [9]
    Cutting tooth according to any one of claims 1 to 8, characterized in that at least one third of the length of the cutting section (59, 57A, 57B) extends in front of the front of the mounting section (61 , 61 ').
    [10]
    10. Cutting tooth according to any one of claims 1 to 9, characterized in that a rear surface of the mounting section (61.61 ') has a tapered hole (67) defined therein for fitting with a fastener conical.
    [11]
    11. Cutting set (25) characterized by the fact that it comprises:
    Petition 870180020519, of 03/14/2018, p. 22/31
    3/6 a mounting block (27, 27 ') for attaching to a rotating brush cutter, the block (27, 27') having a front surface (31) and a top surface (35), a slot (29 ) extending to the block (27, 27 ') behind the front surface (31) along only part of a length of the block (27, 27'), the slot (29) being opened in the top surface ( 35), the slot (29) having a cross section that includes a laterally enlarged area (37) spaced from the top surface (35); and a cutting tooth having a top cutting section (59, 57A, 57B) with opposite front and rear ends defining a length between them, a mounting section (61, 6Γ) extending downwards from a surface of bottom (62) of the cutting section (59, 57A, 57B), the mounting section (61, 6Γ) having a spaced retaining portion of the cutting section (59, 57A, 57B) with a cross section complementary to that of the slot (29), the tooth connectable to the mounting block (27, 27 ') by sliding the retaining portion firmly into the slot (29) in the block (27, 27') with the rest of the tooth resting firmly on the surface of top (35) of the block (27, 27 '), the retaining portion of the mounting section (61, 6Γ) engaged in the laterally enlarged area (37) preventing the tooth from moving upwards through the slot (29), the cutting section (59, 57A, 57B), when the tooth is mounted on the block (27, 27 '), having at least a quarter of its length extending forward from the front of the block (27, 27 ') with the front end ending at a cutting edge (73).
    [12]
    Cutting assembly according to claim 11, characterized by the fact that the top surface (35) of the block (27,
    27 ') is angled to tilt slightly upwards in both directions towards the sides of the block (27, 27') from the slot (29), the rest of the tooth defining complementary inclined surfaces
    Petition 870180020519, of 03/14/2018, p. 23/31
    4 / Q to sit aligned against the angled top surfaces of the block (27, 27 ').
    [13]
    13. Cutting assembly according to claim 11 or 2, characterized in that the retaining portion comprises a pair of symmetrical bottom flanges (65), one of the flanges (65) extending from each side of the mounting section (61.61 ').
    [14]
    Cutting assembly according to claim 13, characterized in that a top surface of each flange (65) angled slightly downward from the front surface to a rear of the mounting section (61, 6Γ), a top surface of the laterally enlarged area (37) of the slot (29) being angled in a complementary manner to fit the top surface of the flanges (65) to fit the flanges (65) into the slot (29).
    [15]
    Cutting set according to any one of claims 11 to 14, characterized in that the cutting section (57A, 57B) and the mounting section (61, 61 ') are separate members, the cutting section (57A, 57B) being connected to the mounting section (61, 6Γ) via a top platform section (91), the top platform section (91) being an integral part of the mounting section (61, 6Γ) and having an increased width with respect to an adjacent part of the mounting section (61, 61 '), the platform section (91) resting on the top surface (35) of the block (27, 27').
    [16]
    16. Cutting set according to any one of claims 11 to 14, characterized in that the cutting section (59, 57A, 57B) and the mounting section (61, 6Γ) are formed from a single piece.
    [17]
    17. Cutting assembly according to any one of claims 11 to 16, characterized in that it also comprises a threaded fastener threaded into the block
    Petition 870180020519, of 03/14/2018, p. 24/31
    5 / Q (27, 27 ') and extending across a rear surface of the block (27, 27') and into the slot (29) to fit threadedly into the mounting section (61.61 ') of the tooth .
    [18]
    18. Brush cutter (1) comprising:
    a rotating drum (3), the drum (3) having a central tubular member (5) with a cylindrical surface (7), a plurality of collars (9) mounted on the cylindrical surface (7) of the member (5), the collars (9) being spaced along a longitudinal geometric axis of the member (5) and extending transversely to the longitudinal geometric axis of the member (5);
    at least one cutting set (25) mounted on each adjacent pair of collars (9), characterized by the fact that:
    each necklace (9) having a cutout (17, 19) extending inwardly from a peripheral edge (15) of the necklace (9), the pair of necklaces (9) having their cutouts (17, 19) aligned, each cutting set (25) having:
    a mounting block (27, 27 ') mounted between and on the two collars (9) at edges defining the cutouts (17, 19), the block (27, 27') having a front surface (31) and a top surface (35), the block (27, 27 ') having a slit (29) extending backwards from the front surface (31) along only part of a length of the block (27, 27'), the slit (29) opening upwards on the top surface (35) with a wider section of the slit (29) being set away from the top surface (35), and a cutting tooth having a blade-like cutting section top (59, 57A, 57B) with opposite front and rear ends defining a length between them, a mounting section (61, 61 ') extending downward from the cutting section (57, 59A, 59B) and defining a retention portion spaced from the cutting section (59, 57A, 57B) and having a complementary shape to that of phenomenon 870180020519, of 03/14/2018, p. 25/31
    6/6 of (29), the cutting tooth detachably mounted on the block (27, 27 ') with the retaining portion sliding firmly into the slot (29) in the block (27, 27') with the rest of the tooth resting firmly on the top surface of the block (27, 27 '), the cutting section (59, 57A, 57B) extending at least substantially along a tangential direction of the collars (9) and located at least partially radially out of the peripheral edges (15) of the collars (9), the cutting section (59, 57A, 57B) extending for at least a quarter of the length from there in front of the block (27, 27 '), the end front of the cutting section (59, 57A, 57B) ending at a cutting edge (73).
    [19]
    19. Brush cutter according to claim 18, characterized by the fact that the slot (29) and the retaining portion have an inverted T-shaped cross section.
    [20]
    20. Brush cutter according to claim 18 or 19, characterized in that complementary top surfaces of the slot (29) and the retaining portion of the mounting section (61, 6Γ) angled slightly downwards from the surface front (31) towards the rear of the block (27, 27 ') in relation to the top surface (35) of the same, so as to allow the retaining portion to be firmly inserted into the slot (29).
    Petition 870180020519, of 03/14/2018, p. 26/31
    1/4
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    同族专利:
    公开号 | 公开日
    CL2013000257A1|2013-10-11|
    WO2012012873A1|2012-02-02|
    AU2011284736A1|2013-02-28|
    US8550391B2|2013-10-08|
    CN103037680B|2016-06-08|
    CN103037680A|2013-04-10|
    ZA201300796B|2014-04-30|
    EP2597941B1|2018-10-03|
    US20120018560A1|2012-01-26|
    RU2013108237A|2014-09-10|
    AU2011284736A8|2016-04-07|
    RU2567456C2|2015-11-10|
    CA2717479A1|2012-01-26|
    EP2597941A4|2016-11-02|
    CA2717479C|2014-01-07|
    BR112013002100A2|2016-05-24|
    US9333508B2|2016-05-10|
    EP2597941A1|2013-06-05|
    US20140027551A1|2014-01-30|
    AU2011284736B2|2016-04-21|
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    法律状态:
    2017-12-19| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|
    2018-04-10| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2018-06-19| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|
    2021-12-14| B25A| Requested transfer of rights approved|
    2021-12-28| B25A| Requested transfer of rights approved|
    2022-01-11| B25A| Requested transfer of rights approved|
    2022-01-25| B25A| Requested transfer of rights approved|
    2022-02-08| B25A| Requested transfer of rights approved|
    优先权:
    申请号 | 申请日 | 专利标题
    US34445310P| true| 2010-07-26|2010-07-26|
    US61/344,453|2010-07-26|
    CA2717479A|CA2717479C|2010-07-26|2010-10-04|Brush cutter|
    CA2,717,479|2010-10-04|
    US12/924,862|2010-10-08|
    US12/924,862|US8550391B2|2010-07-26|2010-10-08|Brush cutter|
    PCT/CA2011/000849|WO2012012873A1|2010-07-26|2011-07-26|Brush cutter|
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