• 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:
    The invention relates to a milling cutter comprising a motorized shaft (2) of longitudinal axis (L) on which a plurality of sets (3) of teeth (4), each of said sets of teeth (3), are fixed. ) comprising a tooth support (8) secured to said motorized shaft (2), on which tooth support (8) are fixed n teeth (4) evenly distributed around said longitudinal axis (L), said teeth (4) being constituted each of an active portion (41) extended by a base (42). According to the invention, said tooth support consists of a housing (8) defining a housing whose thickness corresponds, with the game, to the thickness of said tooth bases (42). In addition, lateral openings are provided on the periphery of the housing (8), for the passage of the base (42) of said teeth (4); and the peripheral contour of said tooth bases (42) comprises bearing surfaces adapted to ensure the locking in the n-1 position of said teeth (4) in said housing housing (84), and the last of said teeth (4) said final tooth being locked in position in said housing housing (84) by an attached locking means (86).
    公开号:FR3040855A1
    申请号:FR1558689
    申请日:2015-09-16
    公开日:2017-03-17
    发明作者:Arnaud Queru
    申请人:Claire Fontaine S A Par Abreviation C F S A；
    IPC主号:
    专利说明:

    Technical field to which the invention relates
    The present invention relates generally to the field of agricultural machinery.
    It relates more particularly to a milling cutter, comprising a motorized shaft with a longitudinal axis on which a plurality of teeth are fixed.
    Technological background
    The tillage burrs consist of rotary tools comprising an elongate shaft, of generally circular section, which is mounted on bearings at each of its ends, and whose length is equipped with a plurality of sets of teeth, regularly distributed, for example every 7 to 15 cm. One of the ends of this shaft is associated with motor means for its rotation drive.
    The sets of teeth each generally comprise a platinum-shaped support welded to the elongate shaft, whose plane extends perpendicularly to the longitudinal axis of this shaft, and on which are bolted the working teeth of the ground, in number usually between two and six, often four.
    Each support plate has for this purpose a number of orifices adapted to receive the bolts for fixing the teeth.
    The teeth each consist of an active part adapted to the work of the ground, extended by a base provided with an orifice for the passage of the fixing bolt on the support plate.
    Depending on the working width, such cutters may have between 30 and 110 bolted teeth.
    However, the teeth of the strawberry wear out as and when they are used and it is necessary to replace them regularly.
    For this, the bolts that hold the teeth are cut by means of suitable tools (usually a grinder); the used teeth are deposited and changed by new teeth, each maintained by bolting.
    But these operations of changing the teeth of the cutter are relatively long and difficult because of the large number of bolts to disassemble and reassemble.
    Object of the invention
    The present invention provides an original system for fixing the teeth on the support shaft of the cutter, which simplifies the assembly and disassembly of the teeth and saves time especially during their replacement operations in case of wear or of breakage.
    For this, the invention provides a milling cutter comprising a motorized shaft of longitudinal axis on which are fixed a plurality of sets of teeth, each of said sets of teeth comprising a tooth holder secured to said motorized shaft, on which tooth support are fixed π teeth regularly distributed around said longitudinal axis, π being greater than 2, said teeth each consisting of an active part adapted to the work of the ground, extended by a base in the form of a planar profile delimited by a peripheral contour; this cutter being characterized in that said tooth support consists of a housing comprising a plate and a counter-platinum, parallel to each other, each extending in a plane perpendicular to said longitudinal axis, spaced apart from one of the other by spacers to define a housing whose thickness corresponds, with the game, to the thickness of said tooth bases; which platinum and backplate of said housing each comprise an orifice for their passage through said motorized shaft, the edge of said orifices being secured by welding with said motorized shaft; and lateral openings are provided on the device of said housing, between said platinum and against platinum and between said spacers for the passage of the base of said teeth; the peripheral contour of said tooth bases comprising: at least one spacer support surface for bearing against at least one of said spacers; a shaft support surface for bearing against said motorized shaft a first tooth support surface for pressing against the base of a first juxtaposed tooth, and a second tooth support surface for resting against the base of a second tooth juxtaposed, said bearing surfaces being adapted to ensure the locking in position of π -1 of said teeth in said housing housing, and the last of said n teeth, said final tooth, being locked in position in said housing housing by a locking means reported.
    The π teeth of each set of teeth are thus held in their housing, locked together, as well as by the motorized shaft, the housing structure and a locking means reported.
    In this way, the disassembly of n teeth of each set of teeth is obtained by degradation of the reported locking means; and after reassembly of new teeth, the locking of all the teeth of each set is obtained by a new reported locking means.
    According to a preferred characteristic, said attachment means of said final tooth is in the form of a bolt whose screw extends through - an orifice formed in the base of said final tooth, and - an orifice formed in said platen and / or in said counterplate.
    According to yet another particularity, all the teeth of the cutter comprise a base provided with a hole adapted to the passage of said screw of said locking bolt.
    In this way, all the teeth can serve as the final tooth, which facilitates the mounting operations of the teeth.
    According to yet another particularity, said counterplate comprises an opening which extends to its passage opening of the motorized shaft, which opening corresponds to the bulk of at least a portion of the base of the tooth final, for positioning and partial blocking of the latter.
    According to an advantageous characteristic, each housing comprises: (i) n - 1 spacers welded on the periphery of said plate and against platinum, each adapted to cooperate with said spacer support surface of the base of one of said teeth, and (ii) a removable bolt-shaped spacer for said final tooth.
    The contour of the base of the teeth advantageously comprises a rear edge, an end edge and a front edge, said spacer support surface being provided on said rear edge, said first tooth support surface being provided on said end edge and said second tooth bearing surface and shaft bearing surface being provided on said front edge.
    Preferably, said spacer support surface of the base of said teeth is in the form of a flat surface.
    Still according to another characteristic, the cutter comprises a motorized shaft of circular section, and said shaft bearing surface of the base of said teeth is in the form of a circular arc.
    For its part, said first tooth support surface is preferably in the form of a projecting member formed on the end edge, and said second tooth support surface is in the form of a reservation formed on said front edge; and said protruding member and reservation have complementary shapes, so that a protruding member of a tooth cooperates with the complementary reservation of a tooth juxtaposed for the locking in position of said teeth in said housing.
    Detailed description of an example of realization
    The following description with reference to the accompanying drawings, given as non-limiting examples, will make it clear what the invention consists of and how it can be achieved.
    In the accompanying drawings: - Figure 1 is a perspective view of a cutter according to the invention, with its end bearings illustrated exploded; FIG. 2 is a perspective view of one of the sets of teeth of the cutter illustrated in FIG. 1, represented here in isolation; - Figure 3 is a front view of a set of teeth according to Figure 2, shown here mounted on the motorized shaft of the cutter; Figure 4 is a side view of the set of teeth shown in Figure 3; - Figure 5 is a perspective view of a housing of one of the sets of teeth of the cutter according to the invention, shown without the associated teeth; Figure 6 is a side view of the housing illustrated in Figure 5; Figure 7 is a rear view of the housing illustrated in Figures 5 and 6; FIG. 8 is a front view of the housing illustrated in FIGS. 5 to 7; Fig. 9 is a perspective view of one of the teeth of the sets of teeth of the cutter shown in Fig. 1; FIG. 10 is a front view of the tooth illustrated in FIG. 9; - Figure 11 is a top view of the tooth shown in Figures 9 and 10; - Figures 12 to 17 illustrate, in six steps, mounting the teeth of each set of teeth within their support housing.
    FIG. 1 shows a milling cutter 1 according to the invention comprising a shaft 2 equipped with a plurality of sets or groups 3 of teeth 4. The shaft 2, with its axis longitudinal L, is of constant circular section over its entire length.
    Its two ends are equipped with bearing systems 5 (here shown exploded), for its mounting on a support frame (not shown), for example provided with means for coupling to a towing vehicle. The shaft 2 is also associated with means ensuring its drive in rotation about its longitudinal axis L, to allow the teeth 4 to work the surface layer of the soil.
    These drive means (not shown) may consist of a pinion mounted on the shaft 2, coaxially with it, at one of its ends, and intended to be driven by a chain.
    The teeth 4 of the cutter 1 are arranged in sets 3 regularly distributed over the length of the shaft 2.
    In this case, in the embodiment shown, the cutter 1 comprises 14 sets 3 of teeth 4 spaced from each other by a distance of the order of 7 to 15 cm, each of said sets 3 having four teeth 4.
    As illustrated in Figures 2 to 4, each set of teeth 3 comprises a support 8, detailed in isolation in Figures 5 to 8, which is secured to the motor shaft 2 and on which are fixed the four teeth 4, which one is detailed in isolation in FIGS. 9 to 11.
    The sets 3 of teeth 4 each extend in a plane P generally perpendicular to the longitudinal axis L of the motorized shaft 2.
    In each set 3 the teeth 4 are regularly distributed around the longitudinal axis L.
    Here, the teeth 4 of the cutter 1 comprise an active end portion 41 adapted to the work of the ground, extended by a base 42 for its attachment to the support 8; and said active end portion 41 of the teeth 4 is inclined relative to the aforementioned plane P.
    In addition, each set 3 comprises an alternation of teeth 4 inclined on one side and the other with respect to this plane P, said teeth 4 being thus symmetrical two by two in order to turn the earth on each side of their support 8 .
    FIG. 2 shows in perspective one of these sets 3 of teeth 4 separated from the motorized shaft 2.
    Figures 3 and 4 are respectively front and side views of the assembly 3 of teeth 4, the support 8 is here secured to the motor shaft 2, preferably by welding.
    As can be seen in Figures 2 to 11, according to the present invention, the support 8 of the teeth 4 consists of a housing comprising a plate 81 and a backplate 82, parallel to each other and which are spaced apart. one of the other by spacers 83 to define a housing 84 whose thickness has, with clearance, to the thickness e of the bases 42 of the teeth 4; in addition: the plate 81 and the backplate 82 each comprise an orifice, respectively 811 and 821, for their passage through the motorized shaft 2, the edge of these orifices 811 and 821 being secured by welding with said motorized shaft 2 - Lateral openings 85 are formed on the periphery of the housing 8, between said plate 81 and against platinum 82, and between the spacers 83, in the extension of the housing 84, for the passage of the base 42 of the teeth 4; and the peripheral contour of said bases 42 of teeth 4 is structured to allow their locking in said housing 8, and it comprises for this: (a) at least one spacer support surface 421 for the support against one said struts 83, (b) a shaft bearing surface 422 for bearing against the motor shaft 2, (c) a first tooth bearing surface 423 for bearing against the base 42 of a first tooth 4 juxtaposed, and (d) a second tooth bearing surface 424 for bearing against the base 42 of a second tooth 4 juxtaposed, said bearing surfaces 421, 422, 423 and 424 being adapted to ensure the locking position of three of said teeth 4 in the housing 84 of the housing 8, and the fourth tooth 4, said final tooth, being locked in position in said housing housing 4 by a reported locking means 86, here shaped bolt.
    In this case, as can be seen in Figures 5 to 8, the plate 81 of the housing 8 has a generally square overall shape. It is made of sheet metal, for example steel, a few millimeters thick, and it comprises in its center the orifice 811 for the passage of the motorized shaft 2.
    For its part, the counter-platinum 82 is also generally square. It is made of sheet metal, for example steel, a few millimeters thick, and it comprises at its center the orifice 821 for passage of the motorized shaft 2.
    This counterplate 82 also has an opening 822 which extends from its peripheral edge to its central orifice 821, corresponding to the bulk of a portion of the base 42 of the final tooth 4, for the positioning and the blocking of the latter, as will be seen later.
    The plate 81 and backplate 82 extend parallel to each other, spaced apart by the distance a, as explained above, and with their central orifices 811 and 821 arranged coaxially with each other; in position on the shaft 2 they extend parallel to the plane P perpendicular to the longitudinal axis L.
    In addition, they comprise the spacers 83 reported at their periphery, namely: - three spacers 831, 832 and 833 fixed, reported by welding, ensuring the sought distance between the plate 81 and the backplate 82, and each adapted to cooperate with the spacer support surface 421 of the base 42 of one of the teeth 4, and - a removable spacer 834, in the form of a bolt (visible in FIGS. 2 to 4 and simply diagrammed on FIG. 5) adapted to cooperate with the spacer support surface 421 of the final tooth 4.
    The plate 81 and the backplate 82 have orifices, respectively 10 and 11, in correspondence, for the passage of the screw of this bolt / spacer 834. Note that the spacers 831, 832 and 833 can be obtained in one piece with the platinum 81 or backplate 82, and secured to the other element by welding.
    The different spacers 831, 832, 833 and 834 are spaced apart from one another to constitute the aforementioned apertures 85, with a view to introducing and locking the tooth bases 42.
    In this case, an opening 851 is formed between the removable bolt / spacer 834 and the fixed spacer 831. An opening 852 is provided between the fixed spacers 831 and 832. An opening 853 is formed between the fixed spacers 832 and 833; and an opening 854 is formed between the fixed spacer 833 and the removable spacer 834, at the opening 822 formed in the counter-plate 82.
    FIGS. 5, 7 and 8 also show the presence of an orifice 12 made in the plate 81 for the passage of the bolt 86 for locking the final tooth 4. This orifice 12 is formed in the space of the opening 822 of the counter-plate 82.
    As can be seen in Figures 9 to 11, the teeth 4 of the cutter 1 are made in one piece; as specified above, they comprise a base 42 of generally planar shape, of thickness e (FIG. 11), which is extended by an active part 41, also flat, angularly offset relative to said base 42 by an angle between 15 and 90 ° here of the order of 30 to 40 °.
    As explained above, two types of teeth 4 are provided to equip the assemblies 3, namely: one with an angular offset of the active part 41 on one side with respect to the plane of the base 42, and other with an angular offset of the active part 41 on the other side with respect to the plane of the base 42, to obtain sets 3 symmetrical with respect to the above-mentioned plane P, provided with teeth 4 with alternately shifted active part.
    The active edge 411 of the active portion 41 of the teeth 4 is provided beveled to optimize its penetration into the earth.
    The bases 42 of the teeth 4 of the cutter 1 are all identical; and the outline of this base 42 comprises: - a rear edge 42a, here oriented on the side of the beveled edge 411 of the active portion 41, on which is formed the spacer support surface 421; an end edge 42b, opposite the active part 41, on which the first tooth support surface 423 is formed, and a front edge 42c (here oriented on the opposite side to the beveled edge 411 of the active part 41), on which are formed the second tooth bearing surface 424 and the shaft bearing surface 422.
    The spacer support surface 421 is in the form of a flat surface; the shaft bearing surface 422 is in the shape of a circular arc to obtain optimum support on the motorized shaft 2 of circular section; on their side, the first tooth bearing surface 423 is in the form of a protruding member, and the second tooth bearing surface 424 is in the form of a reservation, these protruding and reserving members having complementary shapes so a protruding member 423 of a tooth 4 cooperates with the reservation 424 complementary to a tooth 4 juxtaposed for the locking in position of the teeth 4 in the support housing 8.
    An orifice 13 is provided in the base 42, positioned and dimensioned in a manner adapted to be able to come into correspondence with the orifice 12 of the plate 81, in order to receive the screw of the locking bolt 86.
    In this way, all the teeth 4 available can act as a final tooth during assembly in the housing 8, which prevents the operator to search for a specific tooth for this purpose.
    The fixing of the various support housings 8 along the length of the shaft 2 is effected by threading said housings 8 onto said shaft 2 by means of the coaxial orifices 811 and 821 of the plates 81 and the backplate 82, then by welding on said shaft 2 borders of these orifices 811,821.
    Next, the teeth 4 of each set of teeth 3 are mounted in the manner illustrated schematically in FIGS. 12 to 17.
    In these figures 12 to 17, for the sake of simplification, only the plate 81 of a housing 8, the motorized shaft 2 and the positioning of the teeth 4, successively marked 4a, 4b, 4c and 4d, in FIG. chronological order of the laying (the tooth 4a being the first laid and the tooth 4d corresponding to the final tooth).
    In addition, indices a, b, c and d are assigned to bearing surfaces 421, 422, 423 and 424 to identify the tooth in question in the chronological order of laying.
    As illustrated in FIG. 12, the operator places the first tooth 4a by inserting its base 42 in the housing 84 of the housing 8, through the opening 851, its shaft bearing surface 422a bearing against the shaft 2 (more precisely against the cylindrical peripheral surface of this shaft 2); and its spacer bearing surface 421a bearing against the fixed spacer 831 (more precisely against a portion of this spacer 831 facing the interior of the housing 84).
    Then, the base of the second tooth 4b is inserted into the housing 84, as shown in FIG. 13, through the opening 852, and positioned so that its bearing surface 422b comes to bear. against the shaft 2, - its spacer abutment surface 421b abuts against the fixed spacer 832, and - its second tooth bearing surface 424b abuts against the first tooth bearing surface 423a of the first tooth 4a.
    This positioning is possible due to the shape of the tooth 4 and a slightly larger positioning opening if necessary, so as to have a slight assembly set.
    The assembly continues by the introduction of the base of the third tooth 4c in the housing 84, as shown in Figure 14, through the opening 853. This base of the tooth 4c is positioned so that - its shaft support surface 422c bears against the shaft 2, its spacer bearing surface 421 bears against the fixed spacer 833, and its second tooth support surface 424c comes resting against the first tooth bearing surface 423b of the second tooth 4b. Again, this positioning is possible because of the shape of the tooth 4 and the presence of a slightly larger positioning opening if necessary, so as to have a slight assembly set. The base of the final tooth 4d is then positioned in the housing 84, as illustrated in FIG. 15, by the opening 854, with its shaft bearing surface 422d bearing against the shaft 2, its second tooth support surface 424 bears against the first tooth support surface 423c of the third tooth 4c, and its first tooth support surface 423 bears against the second tooth support surface 424a of the first tooth 4a.
    Such positioning of the final tooth 4d is facilitated by the absence of the removable bolt / spacer 834 and the presence of the opening 822 formed in the counter plate 82. The operator then places the bolt / spacer 834 ( 16) by passing its screw through the orifices 10, 11 of the plate 81 and the backplate 82, so that said screw bears against the spacer support surface 421 d of the tooth final 4d to serve as a stop.
    Finally, the locking of the assembly is finalized by the installation of the locking bolt 86, the screw passes through the orifice 13 of the final tooth 4d and the orifice 12 of the plate 81 (Figure 17).
    The mounting of the teeth 4a, 4b, 4c and 4d on each support case 8 is therefore performed by interlocking said teeth 4, and by locking by means of the two bolts 834 and 86.
    Of course, during the mounting operation, the operator is made to take into account the direction of the teeth 4, to obtain the aforementioned alternating assembly which is sought.
    In case of replacement of the teeth 4 of the cutter 1 (because of their wear or their breakage), for each set of teeth 3, only the bolt 86 needs to be removed, by cutting the grinder.
    Then, the teeth 4 of each set 3 can be separated from their support case 8 by simple extraction due to light play in the presence.
    Such a removal of teeth 4 is therefore very easy and fast.
    The assembly of new teeth is carried out according to the procedure described above.
    Spacer bolt 834 serves as a disassembly aid when needed.
    Thus, during the first assembly of the teeth 4 in their support housing 8, this bolt 834 could be positioned in its receiving orifices 10, 11 before the positioning of the teeth; but a posteriori positioning of this spacer bolt 834 facilitates the positioning of the final tooth.
    For subsequent operations of mounting new teeth this spacer bolt 834 remains in place; it is removed from the grinder only if necessary, in case of blockage of the set of teeth in the housing 84 of the support housing 8. As an alternative embodiment, the spacer bolt 834 may be replaced by a fixed spacer secured by welding on the Platinum 81 and / or backplate 82. The invention therefore provides an original mounting solution of the teeth 4 of a cutter 1 which saves time both during assembly and disassembly of these teeth.
    Such a structure can be envisaged for assemblies 3 comprising between two and five teeth, or more.
    权利要求:
    Claims (9)
    [1" id="c-fr-0001]
    1. milling cutter comprising a motorized shaft (2) of longitudinal axis (L) on which are fixed a plurality of sets (3) of teeth (4), each of said sets (3) of teeth (4); ) comprising a tooth support (8) secured to said motorized shaft (2), on which tooth support (8) are fixed n teeth regularly distributed around said longitudinal axis (L), n being greater than 2, said teeth (4 ) being each constituted by an active part (41) adapted to the work of the ground, extended by a base (42) in the form of a planar thickness profile (e) and delimited by a peripheral contour, characterized in that said support of teeth consists of a housing (8) comprising a plate (81) and a counter-platinum (82), parallel to each other, each extending in a plane perpendicular to said longitudinal axis (L), spaced apart from each other other by spacers (83) for defining a housing (84) of thickness (a) co corresponding, with the clearance, to the thickness (e) of said bases (42) of teeth (4), which platinum (81) and backplate (82) of said housing (8) each comprise an orifice (811, 821) for their crossing by said motorized shaft (2), the edge of said orifices (811, 821) being secured by welding with said motorized shaft (2), and lateral openings (85) being formed on the periphery of said housing (8), between said platinum (81) and backplate (82) and between said spacers (83), for the passage of the base (42) of said teeth (4), the peripheral contour of said tooth bases (42) comprising: - at least a spacer abutment surface (421) for bearing against at least one of said spacers (83), - a shaft bearing surface (422) for bearing against said motorized shaft (2) a first tooth bearing surface (423) for bearing against the base (42) of a first tooth juxtaposed, and - a second tooth support surface (424) for pressing against the base of a second tooth (4) juxtaposed, said bearing surfaces (421, 422, 423, 424) being adapted to ensure the locking in position of n -1 of said teeth in said housing housing (84), and the last of said n teeth (4), said final tooth, being locked in position in said housing housing (84) by an attached locking means (86).
    [2" id="c-fr-0002]
    2. milling cutter according to claim 1, characterized in that said locking means attached to said final tooth (4) is bolt-shaped (86) whose screw extends through - an orifice (13) formed in the base (42) of said final tooth (4), and - an orifice (12) formed in said plate (81) and / or in said backplate (82).
    [3" id="c-fr-0003]
    3. milling cutter according to claim 2, characterized in that all its teeth (4) comprise a base (42) provided with an orifice (13) adapted to the passage of said screw of said locking bolt (86). .
    [4" id="c-fr-0004]
    4. milling cutter according to any one of claims 1 to 3, characterized in that said counterplate (82) has an opening (822) extending to its orifice (821) passage of the motorized shaft (2), which opening (822) corresponds to the bulk of at least part of the base of said final tooth (4), for the positioning and the partial locking thereof.
    [5" id="c-fr-0005]
    5. milling cutter according to any one of claims 1 to 4, characterized in that each housing (8) comprises: (i) Π - 1 spacers (831, 832, 833) welded to the periphery of said platen (81) and counterplate (82), each adapted to cooperate with said spacer bearing surface (421) of the base (42) of one of said teeth (4), and (ii) a spacer ( 834) in the form of a bolt for said final tooth (4).
    [6" id="c-fr-0006]
    6. milling cutter according to any one of claims 1 to 5, characterized in that the contour of the base (42) of said teeth (4) comprises a rear edge (42a), an end edge (42b) and a front edge (42c), said spacer bearing surface (421) being provided on said rear edge (42a), said first tooth bearing surface (423) being provided on said edge of said end (42b) and said second tooth bearing surface (424) and shaft bearing surface (422) being provided on said front edge (42c).
    [7" id="c-fr-0007]
    7. milling cutter according to claim 6, characterized in that said spacer bearing surface (421) of the base (42) of said teeth (4) is in the form of a flat surface.
    [8" id="c-fr-0008]
    8. milling cutter according to any one of claims 6 or 7, characterized in that it comprises a motorized shaft (2) of circular section, and in that said bearing surface of shaft (422 ) of the base (42) of said teeth (4) is in the shape of a circular arc.
    [9" id="c-fr-0009]
    A milling cutter according to any one of claims 6 to 8, characterized in that said first tooth bearing surface (423) is in the form of a projecting member on the end edge ( 42b), and in that said second tooth support surface (424) is in the form of a reservation formed on said front edge (42c), said projecting member (423) and reservation (424) having complementary shapes, so a protruding member (423) of a tooth (4) cooperates with the complementary reservation (424) of a tooth (4) juxtaposed for the locking in position of said teeth (4) in said support housing (8).
    类似技术:
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    同族专利:
    公开号 | 公开日
    FR3040855B1|2017-09-01|
    EP3143853A1|2017-03-22|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2896948A1|2006-02-08|2007-08-10|Sas Dairon Soc Par Actions Sim|DEVICE FOR FASTENING BLADES TO SOLIDARY FLANGES OF A ROTARY SHAFT FOR AGRICULTURAL MACHINE.|
    EP2591649A1|2011-11-11|2013-05-15|Howard Ibérica S.A.|Quick fit system for fitting a blade in an agricultural machine and corresponding agricultural machine.|
    EP2727447A1|2012-10-31|2014-05-07|Valentini Antonio S.r.l.|Cutting group for a rotary hoeing machine|US20170172046A1|2015-12-16|2017-06-22|Blount, Inc.|Blade assembly flange|
    US20180020606A1|2015-02-17|2018-01-25|Maschio Gaspardo S.P.A.|Cutter unit for a rotary tilling machine|
    DE102017114132A1|2017-06-26|2018-12-27|Wiedenmann Gmbh|Soil working tool element, soil tillage implement disc, set of such elements, soil tillage rotor and tillage implement|
    法律状态:
    2016-06-17| PLFP| Fee payment|Year of fee payment: 2 |
    2017-03-17| PLSC| Search report ready|Effective date: 20170317 |
    2017-06-20| PLFP| Fee payment|Year of fee payment: 3 |
    2018-06-19| PLFP| Fee payment|Year of fee payment: 4 |
    2019-09-18| PLFP| Fee payment|Year of fee payment: 5 |
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    申请号 | 申请日 | 专利标题
    FR1558689A|FR3040855B1|2015-09-16|2015-09-16|STRAWBERRY FOR SOIL WORKING|FR1558689A| FR3040855B1|2015-09-16|2015-09-16|STRAWBERRY FOR SOIL WORKING|
    EP16305213.7A| EP3143853A1|2015-09-16|2016-02-24|Tilling tool for working the soil|
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