# US 10,870,456 B2 · Track for traction of an off-road vehicle such as a snowmobile or an all-terrain vehicle (ATV) > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,870,456 B2 - Document ID: US10870456B2 - Status: Granted - Kind: B2 - Application number: 15/118,559 - Filed: 2015-02-13 - Published: 2017-02-16 - Granted: 2020-12-22 - Earliest claimed: 2014-02-13 - Assignees: Camso Inc. - Applicants: Camoplast Solideal Inc. - Inventors: Jules Dandurand; Denis Courtemanche; Jason Davis - Web page: https://patentgrep.com/patent/US10870456B2 ## CPC - B62D 55/244: {Moulded in one piece, with either smooth surfaces or surfaces having projections, e.g. incorporating reinforcing elements} - B62D 55/07: Mono-track vehicles - B62D 55/26: Ground engaging parts or elements {(tracks specially adapted for amphibious vehicles B60F3/0015)} - B62D 55/32: Assembly, disassembly, repair or servicing of endless-track systems - B62D 55/065: Multi-track vehicles, i.e. more than two tracks {(soil-shifting machines E02F; mining machines E21C)} - B62M 27/02: power driven - B62M 2027/027: {Snow mobiles characterised by the tracks} - B62D: MOTOR VEHICLES; TRAILERS (steering, or guiding on a desired track, of agricultural machines or implements A01B69/00; wheels, castors, axles, increasing wheel adhesion B60B; vehicle tyres, tyre inflation or tyre changing B60C; connections between vehicles of a train or the like B60D; vehicles for use on rail and road, amphibious or convertible vehicles B60F; suspension arrangements B60G; heating, cooling, ventilating or other air treating devices B60H; windows, windscreens, non-fixed roofs, doors or similar devices, protective coverings for vehicles not in use B60J; propulsion plant arrangements, auxiliary drives, transmissions, controls, instrumentation or dashboards B60K; electric equipment or propulsion of electrically-propelled vehicles B60L; power supply for electrically-propelled vehicles B60M; passenger accommodation not otherwise provided for B60N; adaptations for load transportation or to carry special loads or objects B60P; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q; vehicles, vehicle fittings or vehicle parts not otherwise provided for B60R; servicing, cleaning, repairing, supporting, lifting, or manoeuvring, not otherwise provided for, B60S; brake arrangements, brake control systems or parts thereof B60T; air-cushion vehicles B60V; motor-cycles, accessories therefor B62J, B62K; testing of vehicles G01M) - B62M: RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR {SINGLE-TRACK} CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES (arrangements or mounting of transmissions in vehicles in general B60K; transmission elements per se F16) ## Abstract A track for traction of an off-road vehicle such as a snowmobile or an all-terrain vehicle (ATV). The track comprises an inner surface, a ground-engaging outer surface, and a plurality of traction projections projecting from the ground-engaging outer surface. The track may be very thin and/or the traction projections may be very high. ## Claims ### Claim 1 A track for traction of an off-road vehicle, the track being mountable around a track-engaging assembly comprising a drive wheel for driving the track, the track being elastomeric to be flexible around the track-engaging assembly, the track comprising: a carcass comprising an inner surface for facing the track-engaging assembly and a ground-engaging outer surface for engaging the ground; a plurality of traction projections projecting from the ground-engaging outer surface of the carcass; a plurality of stiffening rods extending transversally to a longitudinal direction of the track and spaced apart in the longitudinal direction of the track; and a reinforcement embedded between the inner surface of the carcass and the ground-engaging outer surface of the carcass; wherein: the stiffening rods are disposed between the reinforcement and the inner surface of the carcass; the reinforcement comprises segments underneath respective ones of the traction projections; at least a majority of each of the segments of the reinforcement is located below a level of the ground-engaging outer surface of the carcass; and at least part of the stiffening rods is located at the level of the ground-engaging outer surface of the carcass. ### Claim 2 (depends on 1) The track of claim 1, wherein the reinforcement is a reinforcing fabric. ### Claim 3 (depends on 1) The track of claim 1, wherein a ratio of (i) a height of a given one of the traction projections over (ii) a thickness of the carcass of the track from the inner surface to the ground-engaging outer surface is at least 15. ### Claim 4 (depends on 1) The track of claim 1, wherein the off-road vehicle is a snowmobile and the track is a snowmobile track. ### Claim 5 (depends on 1) The track of claim 1, wherein an entirety of each of the segments of the reinforcement is located below the level of the ground-engaging outer surface of the carcass. ### Claim 6 (depends on 1) The track of claim 1, comprising a plurality of layers of elastomeric material and a plurality of distinct pieces of elastomeric material spaced apart from one another in the longitudinal direction of the track, wherein: the layers of elastomeric material are molded to form at least part of the inner surface and the ground-engaging outer surface of the carcass; the distinct pieces of elastomeric material are molded to form at least part of respective ones of the traction projections; and the distinct pieces of elastomeric material are consolidated with a given one of the layers of elastomeric material forming at least part of the ground-engaging outer surface during molding. ### Claim 7 (depends on 6) The track of claim 6, wherein the distinct pieces of elastomeric material are molded to form at least a majority of each of the respective ones of the traction projections.