WO1993011022A1 - Vehicules a chenilles - Google Patents

Vehicules a chenilles Download PDF

Info

Publication number
WO1993011022A1
WO1993011022A1 PCT/AU1992/000656 AU9200656W WO9311022A1 WO 1993011022 A1 WO1993011022 A1 WO 1993011022A1 AU 9200656 W AU9200656 W AU 9200656W WO 9311022 A1 WO9311022 A1 WO 9311022A1
Authority
WO
WIPO (PCT)
Prior art keywords
drive
belt
wheel
drive wheel
section
Prior art date
Application number
PCT/AU1992/000656
Other languages
English (en)
Inventor
James Arthur Nagorcka
Original Assignee
Deere & Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Deere & Company filed Critical Deere & Company
Priority to EP92924506A priority Critical patent/EP0614430A4/fr
Publication of WO1993011022A1 publication Critical patent/WO1993011022A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/08—Endless track units; Parts thereof
    • B62D55/12—Arrangement, location, or adaptation of driving sprockets

Definitions

  • This invention relates generally to track laying vehicles and more particularly in one aspect to a track assembly and in another aspect a drive wheel suitable for use in such a vehicle.
  • Track laying vehicles of this type may comprise a main body having a longitudinal axis extending between forward and rearward ends thereof and a pair of track assemblies disposed on opposite sides of the main body.
  • Each track assembly may comprise first and second wheels which are spaced apart in the direction of the longitudinal axis with at least one of the wheels defining a drive wheel.
  • a track assembly suitable for use with a track laying vehicle, the vehicle comprising a vehicle body having a longitudinal axis extending between forward and rearward ends of the vehicle, and having two such track assemblies which are disposed on opposite sides of the vehicle body, each track assembly comprising at least first and second wheels which, in use, are spaced apart in the direction of the longitudinal axis with at least one of the wheels defining a drive wheel, a continuous elastomeric belt or track having a ground engaging surface and an opposite wheel engaging surface with a plurality of power transmission elements projecting from the wheel engaging surface, said belt or track extending at least partially around said wheels so that a section thereof comprises an engagement section which is in engagement with drive wheel, said drive wheel comprising a hub and a plurality of circumferentially spaced apart drive members at or near the radially outer periphery of the drive wheel, the space between adjacent drive members forming receiving recesses for the transmission elements in the engagement section of the belt wherein the pitch of the drive members
  • the engagement section of the belt with the drive wheel has an entry side and an exit side and the maximum driving force may be arranged to be applied to the transmission elements by the drive members on the drive wheel at or towards the exit side.
  • the arrangement may be such that the belt and drive wheel are arranged so that when the belt first contacts the drive wheel the transmission elements are positioned relative to the drive members such that there is little or no driving force applied to the transmission members at this stage. Because of the pitch differential between the transmission elements and the drive members there will be a relative movement between the two parts until at some stage along the engagement section the transmission elements will be engaged by the drive elements so as to apply a transmission force thereto. This force will continue to increase until that part of the belt leaves the drive wheel.
  • the pitch of the drive members on the drive wheel is greater than that of the transmission elements on the section of the belt engaging the drive wheel. It will be appreciated that because of the nature and contraction of the elastomeric belt the pitch of the transmission elements on the belt where it is not in contact with the drive wheel (the straight sections) will be different to that curved section extending partially around the drive wheel.
  • the compressibility of the transmission elements enables the driving force applied by the drive wheel to be progressively taken up by the transmission elements on the engagement section of the belt as the belt passes over the drive wheel. As the transmission elements leave the drive wheel they tend to open out to ensure that the contact with the drive member at that point is broken relatively cleanly.
  • the arrangement as described above reduces the problems of wear on the transmission elements on the belt because at the entry side, the driving members do not tend to slide down the profile of the transmission elements because of the pitch differential. This is not the case where the respective pitches are substantially the same.
  • the drive wheel may include spaced apart outer rim surfaces with the drive members extending therebetween.
  • the general construction of the drive wheel may be similar to that described in applicant's international application no. PCT/AU90/00542.
  • the drive wheel of the present invention may be modified from that described in the aforementioned patent specification in that the drive members, which may be in the form of drive bars, project radially outwardly from the outer rim surfaces. By this arrangement the drive members tend to seat better in between the transmission elements when a section of the belt is engaging the drive wheel.
  • the belt may be generally in the form described in the aforementioned international application no. PCT/AU90/00542.
  • the section of the belt which is in engagement with the drive wheel may be any suitable angle such as for example 180° or more or less depending upon the working requirement of the vehicle.
  • the belt may comprise reinforcing members therein which can take any suitable form. Because of the nature of the elastomeric belt the position of the reinforcing members determines the pitch of that section of the belt which is in engagement with the drive wheel. Advantageously the reinforcing members are disposed in a plane adjacent the wheel engaging surface.
  • the drive members may include a rotatable contact section which engages the belt.
  • This feature constitutes a separate aspect of the invention and will be described in more detail later.
  • This rotatable contact section may, for example, be effected by mounting each of the drive members for rotation about their longitudinal axes.
  • each drive member has a sleeve section thereon which can rotate relative to the drive member. This provides a rolling surface which tends to assist in alleviating wear of the belt.
  • the adjacent drive members and the adjacent power transmission members may be disposed at a selected circumferential pitch and there is a differential between the pitch of the drive members and power transmission elements such that the force carried by the last transmission element engaging the wheel during rotation thereof carries the highest drive force.
  • the circumferential pitch of transmission elements is smaller than the circumferential pitch of the drive members.
  • the power transmission elements may act as guides for locating the elastomeric track or belt on the wheels.
  • the power transmission elements may be arranged so as to inhibit lateral movement of the belt relative to the wheels to try and ensure that the belt does not slip off the wheels.
  • the drive wheel may comprise a hub and a plurality of rim supports operatively connected to the hub.
  • the rim supports may be circumferentially spaced apart and extending radially from the hub with an outer support portion and opposed side portions and at least one pair of said rim sections operatively connected to the outer support portion in spaced apart relation to one another so as to form a gap therebetween with open sides between each rim section and the side portions of the adjacent rim supports.
  • the hub may comprise a disc-like member and each rim support may include a plate like body which extends generally transversely of the disc-like member with an outer edge defining the outer support portion.
  • the side portions of each rim support plate may be inclined inwardly from the outer edge towards a region which is operatively connected to the hub.
  • the facing edges of the rims are inclined inwardly from the outer face.
  • the power transmission elements may be arranged in two or more generally parallel lines extending in the direction of the longitudinal axis and, as such, more than two rims may be provided so that there are sets of rims with drive members therebetween for each of the lines of power transmission elements.
  • the drive members may comprise cross members extending between the rims.
  • the cross members may be in the form of rods, tubes or bars.
  • a drive wheel suitable for use with a track assembly for a vehicle of the general type referred to above the drive wheel comprising a hub, spaced apart outer rim sections and a plurality of circumferentially spaced apart drive members extending between the rim sections the space between adjacent drive members forming receiving recesses for the transmission elements in an engagement section of the belt which is in. engagement with the drive wheel.
  • This aspect of the invention is characterised in that the outer rim sections and/or the drive members include a rotatable belt contact surface portion which engages the belt.
  • the contact surface portion of the outer rim sections may be rotatable relative to the wheel hub about the axis of rotation of the wheel and the contact sections of the drive members are rotatable about the longitudinal axis of the respective drive member.
  • the drive wheel of this aspect of the invention may comprise either one of the contact surface portions on the rim sections or drive members alone or provide them in combination. These rotatable contact surface portions tend to alleviate wear of the belt.
  • each drive member may be mounted for rotation about their respective longitudinal axes.
  • the outer surface of each drive member defines the contact surface portions.
  • each drive member includes a rotatable sleeve section which can rotate relative to a main body section of the drive member.
  • the outer surface of the sleeve of each drive member defines the contact surface portion.
  • the drive members are disposed at or in the region of the outer periphery of the drive wheel.
  • Each rim section may comprise an inner main body and an outer sleeve section rotatable relative thereto. It will be appreciated however that other arrangements could be utilized.
  • the rims may comprise a plurality of spaced apart bars which are rotatable relative to their longitudinal axes.
  • Another arrangement could comprise balls or rollers mounted for rotation in, for example, a main body part of each rim, the belt being adapted to engage the rollers or balls.
  • the drive members need to have a rotatable contact surface portion associated therewith.
  • the wheel may comprises, for example, three separate sections the outer two sections being rotatable relative to a central drive section.
  • the overall construction of the drive wheel may be of the general type of that described earlier and the belt may also be generally in the form previously described.
  • Figure 1 is a side elevation view of a typical work vehicle
  • Figure 2 is a front elevation view of the work vehicle as illustrated in Figure 1;
  • Figure 3 is a plan view taken along line A-A of Figure
  • Figure 4 is a schematic side elevation showing the relationship between the track and drive wheel of a track assembly according to one aspect of the present invention.
  • Figure 5 is a schematic perspective view of a wheel according to an aspect of the present invention.
  • FIG. 1 illustrates the heavy duty elastomeric track laying vehicle 1 of the type to which the various aspects of the invention are applicable.
  • the vehicle 1 has a chassis and frame 3 with a longitudinal axis 33, an operators cabin 4 and an engine 2. Connected to frame 3 is a drawbar 17 which is used to attach draft loads.
  • the vehicle illustrated would be used in the main for heavy-duty draft work, the principles inherent in this invention would also apply to a vehicle for pushing, hauling and carrying large loads.
  • the vehicle is propelled by an elastomeric track 9 along each longitudinal side of chassis 3 in which is entrained a drive wheel 5, an idler wheel 32 and load sharing track wheels 19,20.
  • Ground engagement of the track 9 is made by lugs 11 being part of track 9.
  • Each track is supported by laterally spaced surfaces 16 of the wheel 5 and idler wheel 32.
  • Each track 9 has direct drive engagement with the drive wheel 5 by means of engagement between the cross members 7 of the drive wheel 5 and the drive lugs 11 which are part of the track 9.
  • the drive wheel 5 shown in Figures 1 to 3 rotates around axis 18 and comprises a hub including a drive flange and a wheel knave to which is attached lateral plates or spokes 8. This is best described in applicant's international application PCT/AU90/00542. These spokes 8 support two laterally spaced rims 65 to which may be bonded a firm elastomeric cushion.
  • the elastomeric cushion consists preferably of but not limited to a polyurethane elastomer with a hardness of approximately 85 to 90 duro.
  • the surface 16 of the cushion 6 supports the surface of the track 9. Between the two rims 65, round drive cross members 7 are attached laterally to, the driving means of drive wheel 5.
  • the outer surface of the cross members 7 may be flush with the outer surface 16 of the cushion.
  • the drive lugs 11 of the track 9 are guided into lateral registry with the drive wheel 5 by the cushion and rims 65 having inwardly angled sides that interface with the inwardly angled guiding surface 35 of lugs 11. Lateral registry is also assisted by the cross member 7 pulling in a "chain-like" action on drive lug 11 of track 9.
  • the open area is laterally wider than the inner lateral width of drive lug 11.
  • the angle along the lateral facing side 35 of lug 11 should be approximately 100 degrees from surface 44 to allow a sliding movement with guiding surface 68 when high lateral forces are applied to track 9.
  • Drive lugs 11 of track 9 also have inwardly sloping angles along the longitudinal facing sides to allow positioning of the cross drive member 7 before being fully engaged with the drive lug 11. The angle is the same as the "entry" and "exit” angle of cross drive member 7.
  • the idler wheels 32 which rotate around axis 40, 41 are of similar construction to that of the drive wheel 5, but without cross member 7.
  • Each idler wheel consists essentially of a knave attached to an axle.
  • the knave is also attached to lateral plates or spokes placed radially around the axis of rotation 40 and 41 of the idler axles.
  • the spokes are attached to laterally spaced rims to which may be bonded an elastomeric cushion which has a surface to support surface of track 9.
  • the spokes have been cut away to make an open area which allows random entry of the drive lugs 11 to any point around the circumference of idler wheel 32.
  • the drive lugs 11 of track 9 are guided into lateral registry with the idler wheel 32 in the same way as the drive wheel 5 but without the assistance of the cross members 7.
  • the track 9 and drive lugs 11 maintain lateral registry with the load sharing wheels 19 and 20 because these wheels form a channel in a longitudinal line between the drive wheel 5 and idler wheel 32. As with the drive wheel 5 and idler wheel 32, lateral movement of the track 9 is restricted to lateral movement of the drive lugs 11 within the angled guiding surfaces of each pair of load sharing wheels 19 and 20.
  • the elastomeric track 9 may be of the type having no joints and is therefore continuous and has an endless characteristic.
  • the elastomeric track 9 can be manufactured from a range of elastomers, the preferred track 9 would be a
  • Flowable debris ingested into the track drive area and idler wheel area is returned to the environment by a "squeezing" action of the tensioned track 9 surface 44 against the support surfaces 16 of the drive wheel 5, idler wheel 32 and load sharing wheels 19 and 20.
  • Flowable debris when being “squeezed” or “rolled” will be returned to the environment either at each lateral side of the track 9 or through the open area of either the drive wheel 5 or idler wheel 32. There is therefore a continued cleaning action of the track-drive system without loss of engagement between track 9 and drive wheel 5.
  • the preferred elastomeric track 9 would be of continuous construction and fully moulded from a polyurethane elastomer.
  • the track 9 may be of the general type described in applicant's international application PCT/AU90/00542 or PCT/AU91/00029. It will be appreciated that other tracks would also be suitable.
  • Figure 4 shows the novel relationship between the belt lugs 11 and the drive members 7 of the drive wheel 5.
  • the drive wheel 5 and belt or track 9 are shown schematically in order to explain the phenomena.
  • a pitch P constitute of the transmission elements or lugs 11 in that section of the belt around the drive wheel 5 differs from the pitch P.. in the straight section of the belt.
  • the pitch P « is less than the pitch P-. between adjacent drive members 7 on the drive wheel 5.
  • the drive members 7 do not contact the lugs 11 at the entry side of the track (i.e. where it first contacts the drive wheel). Because of the pitch differential there is relative movement between the two members until the drive members eventually contact the lugs 11. In Fig. 4 this first occurs at lug and drive member 11A and 7A.
  • the transmission force increases until the belt leaves the wheel. As the belt straightens the lug 11 at this point tends to move away from the drive member with which it is associated thereby ensuing that contact between the parts is broken cleanly with minimum sliding between the two parts.
  • reinforcing members 12 are positioned in a plane adjacent the wheel engaging surface of the belt or track.
  • Figure 5 illustrates a modified form of drive wheel which is in accordance with another aspect of the present invention.
  • the drive wheel comprises a hub which includes a pair of discs 67 (only one being shown) to which are operatively connected spaced apart rims 65.
  • Rim supports 15 are operatively connected between the discs 67 and the rims 65 to provide additional support for the rims.
  • Drive members 7 extend between the two rims in similar fashion to that described earlier.
  • the drive members 7 include an outer sleeve 89 which is rotatable about the longitudinal axis of each drive member.
  • the rims 65 have a sleeve section 88 rotatable relative to a main body part thereof about the wheel axis.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

Ensemble à chenille pour véhicule à chenille. Le pas des éléments d'entraînement (7) sur la roue motrice (5) est différent du pas des éléments de transmission (11) de la section de courroie qui se trouve en prise avec la roue motrice (5), de sorte que la force de transmission maximale imprimée à la courroie par la roue motrice (5) soit appliquée au niveau de ladite section de courroie qui se trouve en prise avec la roue motrice (5), et cela dans la zone dans laquelle la courroie se sépare de la roue motrice (5). Selon un mode de réalisation, la roue motrice (5) comporte un moyeu, des sections de jante extérieures et espacées les unes des autres (65), et une pluralité d'éléments d'entraînement (7) s'étendant entre les sections de jante (65). Les sections de jante extérieures (65) et/ou les éléments d'entraînement (7) comprennent une partie superficielle rotative (respectivement 88, 89) destinée à entrer en prise avec une courroie ou une chenille de l'ensemble à chenille.
PCT/AU1992/000656 1991-12-06 1992-12-04 Vehicules a chenilles WO1993011022A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP92924506A EP0614430A4 (fr) 1991-12-06 1992-12-04 Vehicules a chenilles.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AUPK9896 1991-12-06
AUPK989691 1991-12-06
AUPL148692 1992-03-23
AUPL1486 1992-03-23

Publications (1)

Publication Number Publication Date
WO1993011022A1 true WO1993011022A1 (fr) 1993-06-10

Family

ID=25644171

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1992/000656 WO1993011022A1 (fr) 1991-12-06 1992-12-04 Vehicules a chenilles

Country Status (2)

Country Link
EP (1) EP0614430A4 (fr)
WO (1) WO1993011022A1 (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0687618A1 (fr) * 1994-06-17 1995-12-20 Diehl Remscheid GmbH & Co. Système d'entraînement pour une chenille
EP0760331A2 (fr) * 1995-08-31 1997-03-05 BRIDGESTONE/FIRESTONE, Inc. Chenille en caoutchouc avec entraînement direct
WO1999035024A1 (fr) * 1998-01-06 1999-07-15 Caterpillar Inc. Mecanisme d'entrainement conçu pour un engin a chenille et presentant une duree prolongee
US6123399A (en) * 1998-04-02 2000-09-26 Blaw-Knox Construction Equipment Corp. Mobile construction vehicle driven by track assemblies using continuous elastomeric belts
US6247547B1 (en) 1998-04-21 2001-06-19 A.S.V., Inc. Suspension and drive mechanism for a multi-surface vehicle
EP1151910A2 (fr) * 2000-05-03 2001-11-07 Demag Mobile Cranes GmbH Entraínement finale pour chenille
US7252347B2 (en) 2004-01-13 2007-08-07 Camoplast Inc. Belt over mid-rollers
CN105579333A (zh) * 2013-09-13 2016-05-11 Mtd产品公司 履带车辆用驱动链轮
US9828047B2 (en) 2012-07-06 2017-11-28 Mtd Products Inc Suspension and lock-out systems for a tracked vehicle
US9884662B2 (en) 2013-09-13 2018-02-06 Mtd Products Inc Suspension and lock-out systems for a partially tracked vehicle
US9902441B2 (en) 2014-08-21 2018-02-27 Mtd Products Inc Track drive
US10155537B2 (en) 2015-05-29 2018-12-18 Mtd Products Inc Utility vehicle
US10806076B2 (en) 2017-10-06 2020-10-20 Mtd Products Inc High-efficiency lawn maintenance tool and high-efficiency cutting blade
US20210107576A1 (en) * 2017-09-05 2021-04-15 Soucy International Inc. Track system for vehicle
US11180204B2 (en) 2016-04-27 2021-11-23 Positec Power Tools (Suzhou) Co., Ltd. Autonomous track-type moving device
US11511818B2 (en) 2017-09-05 2022-11-29 Mtd Products Inc Track drive

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104002884A (zh) * 2014-05-13 2014-08-27 中国人民解放军军事交通学院 一种可重构橡胶履带

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1962045A (en) * 1945-03-15 1948-02-26 Roadless Traction Limited Improvements in or relating to self-propelled tracklaying vehicles
FR1006365A (fr) * 1947-12-26 1952-04-22 Applic Mecaniques Soc Et Perfectionnements apportés aux systèmes d'entraînement par chaîne sans fin, notamment aux systèmes de chenilles
FR2107614A5 (en) * 1970-09-24 1972-05-05 Stevens J P Et Co Inc Driving track - for tracked vehicle consisting of moulded elastomer
WO1991007306A1 (fr) * 1989-11-13 1991-05-30 Warane Pty. Ltd. Vehicule de travaux a chenilles elastomeres avec entrainement direct

Family Cites Families (2)

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Publication number Priority date Publication date Assignee Title
US2599233A (en) * 1951-07-13 1952-06-03 Christie John Edward Wheel for tank structures
US2854294A (en) * 1955-02-02 1958-09-30 Schield Bantam Company Crawler tumbler and track shoe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1962045A (en) * 1945-03-15 1948-02-26 Roadless Traction Limited Improvements in or relating to self-propelled tracklaying vehicles
FR1006365A (fr) * 1947-12-26 1952-04-22 Applic Mecaniques Soc Et Perfectionnements apportés aux systèmes d'entraînement par chaîne sans fin, notamment aux systèmes de chenilles
FR2107614A5 (en) * 1970-09-24 1972-05-05 Stevens J P Et Co Inc Driving track - for tracked vehicle consisting of moulded elastomer
WO1991007306A1 (fr) * 1989-11-13 1991-05-30 Warane Pty. Ltd. Vehicule de travaux a chenilles elastomeres avec entrainement direct

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Derwent Soviet Inventions Illustrated, Section III, Mechanical & General, Vol. V, No. 39, issued 5 November 1974, Road Vehicles, Ships, Aircraft, Railways, p. 1; & SU,A,384722 (CHISTYAKOV) 15 May 1974 (15.05.74), whole Abstract. *
PATENTS ABSTRACT OF JAPAN, M640, page 25; & JP,A,62 122 868 (ISEKI & CO. LTD) 4 June 1987 (04.06.87), whole Abstract. *
See also references of EP0614430A4 *

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4421001A1 (de) * 1994-06-17 1995-12-21 Diehl Remscheid Gmbh & Co Antriebssystem für eine Gleiskette
US5632538A (en) * 1994-06-17 1997-05-27 Diehl Remscheid Gmbh & Co. Drive system for a caterpillar track
EP0687618A1 (fr) * 1994-06-17 1995-12-20 Diehl Remscheid GmbH & Co. Système d'entraînement pour une chenille
US6139121A (en) * 1995-05-10 2000-10-31 Bridgestone/Firestone, Inc. Positive drive rubber track
EP0760331A2 (fr) * 1995-08-31 1997-03-05 BRIDGESTONE/FIRESTONE, Inc. Chenille en caoutchouc avec entraînement direct
EP0760331A3 (fr) * 1995-08-31 1998-10-14 BRIDGESTONE/FIRESTONE, Inc. Chenille en caoutchouc avec entraínement direct
US6220378B1 (en) 1998-01-06 2001-04-24 Caterpillar Inc. Drive mechanism for a track type work machine having enhanced durability
WO1999035024A1 (fr) * 1998-01-06 1999-07-15 Caterpillar Inc. Mecanisme d'entrainement conçu pour un engin a chenille et presentant une duree prolongee
US6123399A (en) * 1998-04-02 2000-09-26 Blaw-Knox Construction Equipment Corp. Mobile construction vehicle driven by track assemblies using continuous elastomeric belts
US6247547B1 (en) 1998-04-21 2001-06-19 A.S.V., Inc. Suspension and drive mechanism for a multi-surface vehicle
US6435292B2 (en) 1998-04-21 2002-08-20 A.S.V., Inc. Suspension and drive mechanism for a multi-surface vehicle
US6435291B2 (en) 1998-04-21 2002-08-20 A.S.V., Inc. Suspension and drive mechanism for multi-surface vehicle
US6497460B2 (en) 1998-04-21 2002-12-24 A. S. V., Inc. Suspension and drive mechanism for a multi-surface vehicle
US7188915B2 (en) 1998-04-21 2007-03-13 A.S.V., Inc. Suspension and drive mechanism for a multi-surface vehicle
EP1151910A2 (fr) * 2000-05-03 2001-11-07 Demag Mobile Cranes GmbH Entraínement finale pour chenille
EP1151910A3 (fr) * 2000-05-03 2003-01-22 Demag Mobile Cranes GmbH & Co. KG Entraínement finale pour chenille
US7252347B2 (en) 2004-01-13 2007-08-07 Camoplast Inc. Belt over mid-rollers
US9828047B2 (en) 2012-07-06 2017-11-28 Mtd Products Inc Suspension and lock-out systems for a tracked vehicle
US10427735B2 (en) 2012-07-06 2019-10-01 Mtd Products Inc Drive sprocket for a tracked utility vehicle
US10773760B2 (en) 2013-09-13 2020-09-15 Mtd Products Inc Suspension and lock-out systems for a partially tracked vehicle
US9688324B2 (en) 2013-09-13 2017-06-27 Mtd Products Inc Drive sprocket for a tracked vehicle
US9884662B2 (en) 2013-09-13 2018-02-06 Mtd Products Inc Suspension and lock-out systems for a partially tracked vehicle
CN105579333A (zh) * 2013-09-13 2016-05-11 Mtd产品公司 履带车辆用驱动链轮
US10155554B2 (en) 2013-09-13 2018-12-18 Mtd Products Inc Drive sprocket for a tracked vehicle
US11034400B2 (en) 2013-09-13 2021-06-15 Mtd Products Inc Drive sprocket for a tracked vehicle
US9902441B2 (en) 2014-08-21 2018-02-27 Mtd Products Inc Track drive
US10730550B2 (en) 2015-05-29 2020-08-04 Mtd Products Inc Utility vehicle
US10155537B2 (en) 2015-05-29 2018-12-18 Mtd Products Inc Utility vehicle
US11180204B2 (en) 2016-04-27 2021-11-23 Positec Power Tools (Suzhou) Co., Ltd. Autonomous track-type moving device
US20210107576A1 (en) * 2017-09-05 2021-04-15 Soucy International Inc. Track system for vehicle
US11511818B2 (en) 2017-09-05 2022-11-29 Mtd Products Inc Track drive
US11731714B2 (en) * 2017-09-05 2023-08-22 Soucy International Inc. Track system for vehicle
US10806076B2 (en) 2017-10-06 2020-10-20 Mtd Products Inc High-efficiency lawn maintenance tool and high-efficiency cutting blade

Also Published As

Publication number Publication date
EP0614430A4 (fr) 1995-05-24
EP0614430A1 (fr) 1994-09-14

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