[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 B62D-055/12 B62D-055/125
출원번호	US-0886327 (2015-10-19)
등록번호	US-9878750 (2018-01-30)
발명자 / 주소	Leblanc, Francois Lussier, Alain Boily, Patrice
출원인 / 주소	Camso Inc.
대리인 / 주소	Fish & Richardson P.C.
인용정보	피인용 횟수 : 1 인용 특허 : 62

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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 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, may exhibit a desired variation of a material property (e.g., 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. An endless track for traction of an off-road vehicle, the endless track being mountable around a plurality of wheels that comprises a drive wheel for driving the endless track, the drive wheel comprising a plurality of drive members spaced apart from one another, the endless track comprising: an elastomeric belt-shaped body comprising an inner surface for facing the wheels and a ground-engaging outer surface for engaging the ground; anda plurality of elastomeric drive lugs projecting from the inner surface and configured to engage the drive wheel, each elastomeric drive lug of the plurality of elastomeric drive lugs comprising a drive surface configured to contact a drive member of the plurality of drive members when the elastomeric drive lug engages the drive member, the drive surface of the elastomeric drive lug being uneven in a widthwise direction of the endless track such that the elastomeric drive lug tapers towards lateral ends of the drive surface of the elastomeric drive lug. 2. The endless track of claim 1, wherein the drive member comprises a drive surface configured to contact the drive surface of the elastomeric drive lug when the elastomeric drive lug engages the drive member, the drive surface of the drive member is uneven in a direction parallel to an axis of rotation of the drive wheel such that the drive surface of the drive member forms a recess, and the drive surface of the elastomeric drive lug extends into the recess of the drive member when the elastomeric drive lug engages the drive member. 3. The endless track of claim 1, wherein the drive surface of the elastomeric drive lug defines an oblique angle relative to the widthwise direction of the endless track. 4. The endless track of claim 3, wherein the oblique angle is at least 0.5°. 5. The endless track of claim 3, wherein the oblique angle is at least 1°. 6. The endless track of claim 3, wherein the oblique angle is at least 2°. 7. The endless track of claim 3, wherein the oblique angle is at least 5°. 8. The endless track of claim 1, wherein the drive member defines a draft angle used in manufacturing the drive wheel, and the drive surface of the elastomeric drive lug is configured to accommodate the draft angle defined by the drive member. 9. The endless track of claim 1, wherein the drive member comprises a drive surface configured to contact the drive surface of the elastomeric drive lug when the elastomeric drive lug engages the drive member, the drive surface of the drive member defines an oblique angle, the drive surface of the elastomeric drive lug defines an oblique angle, and a ratio of the oblique angle defined by the drive surface of the elastomeric drive lug and the oblique angle defined by the drive surface of the drive member is between 0.5 and 1.5. 10. The endless track of claim 1, wherein the drive member comprises a drive surface configured to contact the drive surface of the elastomeric drive lug when the elastomeric drive lug engages the drive member, the drive surface of the drive member defines an oblique angle, the drive surface of the elastomeric drive lug defines an oblique angle, and a ratio of the oblique angle defined by the drive surface of the elastomeric drive lug and the oblique angle defined by the drive surface of the drive member is between 0.8 and 1.2. 11. The endless track of claim 1, wherein the drive member comprises a drive surface configured to contact the drive surface of the elastomeric drive lug when the elastomeric drive lug engages the drive member, the drive surface of the drive member defines an oblique angle, the drive surface of the elastomeric drive lug defines an oblique angle, and a ratio of the oblique angle defined by the drive surface of the elastomeric drive lug and the oblique angle defined by the drive surface of the drive member is between 0.9 and 1.1. 12. The endless track of claim 1, wherein the drive surface of the elastomeric drive lug is curved in the widthwise direction of the endless track. 13. The endless track of claim 1, wherein a contact area of the elastomeric drive lug for contacting the drive member is greater than if the drive surface of the elastomeric drive lug was substantially flat but the elastomeric drive lug was otherwise identical. 14. The endless track of claim 1, wherein the elastomeric drive lug tapers from a central region of the drive surface of the elastomeric drive lug to the lateral ends of the drive surface of the elastomeric drive lug. 15. The endless track of claim 1, wherein the drive surface of the elastomeric drive lug is nonparallel to the widthwise direction of the endless track over at least a majority of an extent of the elastomeric drive lug in the widthwise direction of the endless track. 16. The track of claim 15, wherein the drive surface of the elastomeric drive lug is nonparallel to the widthwise direction of the endless track over substantially an entirety of the extent of the elastomeric drive lug in the widthwise direction of the endless track. 17. The endless track of claim 1, wherein an apex of the drive surface of the elastomeric drive lug is located in a central region of the elastomeric drive lug in the widthwise direction of the endless track. 18. The endless track of claim 17, wherein the apex of the drive surface of the elastomeric drive lug is located substantially at a midpoint of the elastomeric drive lug in the widthwise direction of the endless track. 19. A track for traction of a vehicle, the track being mountable around a plurality of wheels that comprises a drive wheel for driving the track, the drive wheel comprising a plurality of drive members spaced apart from one another, the track being elastomeric to flex about 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 lugs projecting from the inner surface and configured to engage the drive wheel, each drive lug of the plurality of drive lugs comprising a drive surface configured to contact a drive member of the plurality of drive members when the drive lug engages the drive member, the drive surface of the drive lug being uneven in a widthwise direction of the track such that an intermediate portion of the drive surface of the drive lug between lateral ends of the drive surface of the drive lug in the widthwise direction of the track projects in a longitudinal direction of the track to extend further towards the drive member than the lateral ends of the drive surface of the drive lug. 20. The track of claim 19, wherein the drive surface of the drive lug defines an oblique angle relative to the widthwise direction of the track. 21. The track of claim 20, wherein the oblique angle is at least 0.5°. 22. The track of claim 20, wherein the oblique angle is at least 1°. 23. The track of claim 20, wherein the oblique angle is at least 2°. 24. The track of claim 20, wherein the oblique angle is at least 5°. 25. The track of claim 19, wherein the drive member comprises a drive surface configured to contact the drive surface of the drive lug when the drive lug engages the drive member, the drive surface of the drive member defines a draft angle used in manufacturing the drive wheel, and the intermediate portion of the drive surface of the drive lug is configured to fit within the draft angle defined by the drive member. 26. The track of claim 19, wherein the drive member comprises a drive surface configured to contact the drive surface of the drive lug when the drive lug engages the drive member, the drive surface of the drive member defines an oblique angle, the drive surface of the drive lug defines an oblique angle, and a ratio of the oblique angle defined by the drive surface of the drive lug and the oblique angle defined by the drive surface of the drive member is between 0.5 and 1.5. 27. The track of claim 19, wherein the drive member comprises a drive surface configured to contact the drive surface of the drive lug when the drive lug engages the drive member, the drive surface of the drive member defines an oblique angle, the drive surface of the drive lug defines an oblique angle, and a ratio of the oblique angle defined by the drive surface of the drive lug and the oblique angle defined by the drive surface of the drive member is between 0.8 and 1.2. 28. The track of claim 19, wherein the drive member comprises a drive surface configured to contact the drive surface of the drive lug when the drive lug engages the drive member, the drive surface of the drive member defines an oblique angle, the drive surface of the drive lug defines an oblique angle, and a ratio of the oblique angle defined by the drive surface of the drive lug and the oblique angle defined by the drive surface of the drive member is between 0.9 and 1.1. 29. The track of claim 19, wherein the drive surface of the drive lug is curved in the widthwise direction of the track. 30. The track of claim 19, wherein an apex of the intermediate portion of the drive surface of the drive lug is located in a central region of the drive lug in the widthwise direction of the track. 31. The track of claim 30, wherein the apex of the intermediate portion of the drive surface of the drive lug is located substantially at a midpoint of the drive lug in the widthwise direction of the track. 32. The track of claim 19, wherein the drive member comprises a drive surface configured to contact the drive surface of the drive lug when the drive lug engages the drive member, the drive surface of the drive member is uneven in a direction parallel to an axis of rotation of the drive wheel such that the drive surface of the drive member comprises a recessed portion, and the intermediate portion of the drive surface of the drive lug is configured to be received in the recessed portion of the drive surface of the drive member when the drive lug engages the drive member. 33. The track of claim 19, wherein the drive surface of the drive lug is nonparallel to the widthwise direction of the track over at least a majority of an extent of the drive lug in the widthwise direction of the track. 34. The track of claim 33, wherein the drive surface of the drive lug is nonparallel to the widthwise direction of the track over substantially an entirety of the extent of the drive lug in the widthwise direction of the track. 35. The track of claim 19, wherein the drive lug tapers from a central region of the drive surface of the drive lug to the lateral ends of the drive surface of the drive lug. 36. The track of claim 19, wherein a contact area of the drive lug for contacting the drive member is greater than if the drive surface of the drive lug was substantially flat but the drive lug was otherwise identical. 37. A track system for traction of a vehicle, the track system comprising: a plurality of wheels that comprises a drive wheel, the drive wheel comprising a plurality of drive members spaced apart from one another; anda track disposed around the wheels and driveable by the drive wheel, the track being elastomeric to flex about 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 lugs projecting from the inner surface and configured to engage the drive wheel, each drive lug of the plurality of drive lugs comprising a drive surface configured to contact a drive member of the plurality of drive members when the drive lug engages the drive member, the drive surface of the drive lug being uneven in a widthwise direction of the track such that an intermediate portion of the drive surface of the drive lug between lateral ends of the drive surface of the drive lug in the widthwise direction of the track projects in a longitudinal direction of the track to extend further towards the drive member than the lateral ends of the drive surface of the drive lug. 38. The track system of claim 37, wherein the drive member comprises a drive surface configured to contact the drive surface of the drive lug when the drive lug engages the drive member, the drive surface of the drive member is uneven in a direction parallel to an axis of rotation of the drive wheel such that the drive surface of the drive member comprises a recessed portion, and the intermediate portion of the drive surface of the drive lug is configured to be received in the recessed portion of the drive surface of the drive member when the drive lug engages the drive member.

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Väärsi, Kuldar. Frame assembly for vehicles. USP201806D820736.

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Endless track for traction of a vehicle

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Endless track for traction of a vehicle

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