[특허]Endless track for traction of a vehicle

Camso Inc.

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Endless track for traction of a vehicle

국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B62D-055/24
출원번호	US-0721326 (2015-05-26)
등록번호	US-10077089 (2018-09-18)
발명자 / 주소	Lussier, Alain Leblanc, Francois Boily, Patrice
출원인 / 주소	Camso Inc.
대리인 / 주소	Fish & Richardson P.C.
인용정보	피인용 횟수 : 0 인용 특허 : 62

초록
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An endless track for traction of an off-road vehicle, such as an agricultural vehicle, an industrial vehicle (e.g., a construction vehicle) or a military vehicle, is provided. The endless track comprises an elastomeric belt-shaped body comprising an inner surface for facing wheels of the vehicle and a ground-engaging outer surface for engaging the ground. The endless track also comprises a plurality of elastomeric lugs, such as drive/guide lugs projecting from the inner surface and/or traction lugs projecting from the ground-engaging outer surface. An elastomeric lug may have a material composition defining an arrangement of zones of different materials which comprises a plurality of zones of different elastomeric materials. The elastomeric lug may exhibit a desired variation of a material property (e.g., a modulus of elasticity) across the arrangement of zones of different materials. A zone of the elastomeric lug may have a dedicated function, such as a sacrificial zone or a wear indicator zone. An elastomeric drive lug may comprise an uneven drive surface, such as an angled or curved surface, for engaging a drive member of a drive wheel of the vehicle.

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1. A track for traction of a vehicle, the track being mountable around a plurality of wheels for driving and guiding the track around the wheels, the track being elastomeric to flex as the track moves around the wheels, the track comprising: an inner surface for facing the wheels;a ground-engaging outer surface for engaging the ground; anda plurality of drive/guide lugs projecting from the inner surface, each drive/guide lug comprising: a plurality of elastomeric layers that includes a plurality of elastomeric materials different from one another; anda non-elastomeric layer entirely contained within the drive/guide lug, spaced from a periphery of the drive/guide lug, and disposed over and astride a given one of the elastomeric layers that is beneath the non-elastomeric layer. 2. The track of claim 1, wherein the non-elastomeric layer is a polymeric layer. 3. The track of claim 1, wherein a modulus of elasticity of a non-elastomeric material of the non-elastomeric layer is greater than a modulus of elasticity of a given one of the elastomeric materials. 4. The track of claim 1, wherein the non-elastomeric layer reduces a potential for crack propagation in the drive/guide lug. 5. The track of claim 1, wherein the elastomeric materials comprise at least three elastomeric materials different from one another. 6. The track of claim 1, wherein a modulus of elasticity of a first one of the elastomeric materials is different from a modulus of elasticity of a second one of the elastomeric materials. 7. The track of claim 6, wherein: the second one of the elastomeric materials is disposed inwardly relative to the first one of the elastomeric materials; and the modulus of elasticity of the second one of the elastomeric materials is greater than the modulus of elasticity of the first one of the elastomeric materials. 8. The track of claim 1, wherein the non-elastomeric layer is thinner than the given one of the elastomeric layers. 9. The track of claim 1, wherein the non-elastomeric layer includes a first non-elastomeric material and the drive/guide lug comprises a second non-elastomeric material. 10. A track system comprising the track of claim 1 and the plurality of wheels for driving and guiding the track. 11. The track of claim 1, wherein the non-elastomeric layer is generally U-shaped in a cross-section of the drive/guide lug taken in a longitudinal direction of the track. 12. The track of claim 1, wherein the non-elastomeric layer is shaped substantially as a scaled-down version of a periphery of the drive/guide lug. 13. The track of claim 1, wherein the non-elastomeric layer comprises a top portion and a plurality of side portions that extend from the top portion and terminate adjacent to a base of the drive/guide lug. 14. The track of claim 13, wherein the top portion of the non-elastomeric layer extends substantially parallel to a top surface of the drive/guide lug. 15. The track of claim 14, wherein the side portions of the non-elastomeric layer respectively extend substantially parallel to side surfaces of the drive/guide lug. 16. The track of claim 1, wherein the non-elastomeric layer is a first non-elastomeric layer and the drive/guide lug comprises a second non-elastomeric layer entirely contained within the drive/guide lug. 17. A track for traction of a vehicle, the track being mountable around a plurality of wheels for driving and guiding the track around the wheels, the track being elastomeric to flex as the track moves around the wheels, the track comprising: an inner surface for facing the wheels;a ground-engaging outer surface for engaging the ground; anda plurality of drive/guide lugs projecting from the inner surface, each drive/guide lug comprising: a plurality of elastomeric layers that includes a plurality of elastomeric materials different from one another; anda non-elastomeric layer entirely contained within the drive/guide lug, spaced from a periphery of the drive/guide lug, and comprising a top portion and a plurality of side portions that extend from the top portion, terminate adjacent to a base of the drive/guide lug and contain therebetween a given one of the elastomeric layers that is beneath the non-elastomeric layer. 18. The track of claim 17, wherein the non-elastomeric layer is a polymeric layer. 19. The track of claim 17, wherein a modulus of elasticity of a non-elastomeric material of the non-elastomeric layer is greater than a modulus of elasticity of a given one of the elastomeric materials. 20. The track of claim 17, wherein the non-elastomeric layer reduces a potential for crack propagation in the drive/guide lug. 21. The track of claim 17, wherein a modulus of elasticity of a first one of the elastomeric materials is different from a modulus of elasticity of a second one of the elastomeric materials. 22. The track of claim 21, wherein: the second one of the elastomeric materials is disposed inwardly relative to the first one of the elastomeric materials; and the modulus of elasticity of the second one of the elastomeric materials is greater than the modulus of elasticity of the first one of the elastomeric materials. 23. The track of claim 17, wherein the elastomeric materials comprise at least three elastomeric materials different from one another. 24. The track of claim 17, wherein the non-elastomeric layer is thinner than the given one of the elastomeric layers. 25. The track of claim 17, wherein the non-elastomeric layer comprises a first non-elastomeric material and the drive/guide lug comprises a second non-elastomeric material. 26. A track system comprising the track of claim 17 and the plurality of wheels for driving and guiding the track. 27. The track of claim 17, wherein the non-elastomeric layer is shaped substantially as a scaled-down version of a periphery of the drive/guide lug. 28. The track of claim 27, wherein the top portion of the non-elastomeric layer extends substantially parallel to a top surface of the drive/guide lug. 29. The track of claim 28, wherein the side portions of the non-elastomeric layer respectively extend substantially parallel to side surfaces of the drive/guide lug. 30. A track for traction of a vehicle, the track being mountable around a plurality of wheels for driving and guiding the track around the wheels, the track being elastomeric to flex as the track moves around the wheels, the track comprising: an inner surface for facing the wheels;a ground-engaging outer surface for engaging the ground; anda plurality of drive/guide lugs projecting from the inner surface, each drive/guide lug comprising: a plurality of elastomeric layers that includes a plurality of elastomeric materials different from one another; anda non-elastomeric layer entirely contained within the drive/guide lug, spaced from a periphery of the drive/guide lug, and shaped substantially as a scaled-down version of the periphery of the drive/guide lug. 31. A track for traction of a vehicle, the track being mountable around a plurality of wheels for driving and guiding the track around the wheels, the track being elastomeric to flex as the track moves around the wheels, the track comprising: an inner surface for facing the wheels;a ground-engaging outer surface for engaging the ground; anda plurality of drive/guide lugs projecting from the inner surface, each drive/guide lug comprising: an elastomeric layer; anda plurality of non-elastomeric layers, wherein an outermost non-elastomeric layer of the drive/guide lug that is closest to a periphery of the drive/guide lug terminates within the drive/guide lug in a cross-section of the drive/guide lug taken in a longitudinal direction of the track.

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Endless track for traction of a vehicle

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