An endless track assembly that mounts to a vehicle drive linkage and is operative to vary the track geometry or profile and terrain contact surface to differing terrains. The track assembly includes controlled idler wheel rocker arm suspensions for pivoting associated idler wheels at an assembly framework. In one assembly, a wheel and tire are supported to a track drive sprocket. The shape of the track assembly can be transformed to alternately engage and disengage the track or wheel with the terrain. In other constructions, the geometry of the track can be varied between triangular and circular shapes. The assemblies include pivotally controlled idler wheel suspensions that cooperate with a drive sprocket supported expansible member to transform the track profile.

An endless track assembly that mounts to a vehicle drive linkage and is operative to vary the track geometry or profile and terrain contact surface to differing terrains. The track assembly includes controlled idler wheel rocker arm suspensions for pivoting associated idler wheels at an assembly framework. In one assembly, a wheel and tire are supported to a track drive sprocket. The shape of the track assembly can be transformed to alternately engage and disengage the track or wheel with the terrain. In other constructions, the geometry of the track can be varied between triangular and circular shapes. The assemblies include pivotally controlled idler wheel suspensions that cooperate with a drive sprocket supported expansible member to transform the track profile.

A track system for an agricultural vehicle is configured to better perform when the vehicle is roading, including to reduce or minimize deteriorative effects on a track of the track system as the vehicle travels against a road's hard surface, especially at higher speeds.

A track system for an agricultural vehicle is configured to better perform when the vehicle is roading, including to reduce or minimize deteriorative effects on a track of the track system as the vehicle travels against a road's hard surface, especially at higher speeds.

Crawled vehicle for the preparation of ski pistes; the crawled vehicle comprising a frame; two wheels assemblies displaced at opposite side with respect to the frame; two crawls, each of them wounded respectively around to one of the two wheels assemblies; and at least one supporting device, for each wheels assemblies, coupled to at least two wheels of the wheel assembly and connected in an articulated jointed manner to the frame for coupling the at least two wheels of the wheels assembly to the frame; wherein the supporting device has a first supporting element, which supports one of the at least two wheels of the wheels assembly; and a second supporting element, which supports another of the two wheels of the wheels assembly; and wherein the first supporting element and the second supporting element are connected to one another through a first articulated joint in a first point.

A track system for an agricultural vehicle is configured to better perform when the vehicle is roading, including to reduce or minimize deteriorative effects on a track of the track system as the vehicle travels against a road's hard surface, especially at higher speeds.

A track system for an agricultural vehicle is configured to better perform when the vehicle is roading, including to reduce or minimize deteriorative effects on a track of the track system as the vehicle travels against a road's hard surface, especially at higher speeds.

A track system includes a primary wheel structured to be rotationally attachable to a vehicle, a frame rotationally supporting a plurality of secondary wheels; a sub-frame supported by the frame. The sub-frame rotationally supports the primary wheel. The primary wheel and the plurality of secondary wheels support an endless track thereabout. A fastener secures the frame to the sub-frame and prevents pivoting of the frame relative to the sub-frame about the pivot axis. The fastener is disengageable. The frame is pivotable relative to the sub-frame about the pivot axis when the fastener is disengaged. The fastener is re-engageable to secure the frame to the sub-frame in any one of a plurality of different adjustment positions. In some implementations, a pivot member extends in a vertical direction between the sub-frame and the frame and defines a pivot axis of the frame.

Example apparatuses and techniques have been presented for towing tracked vehicles at high speeds without various deficiencies and for allowing a vehicle to be configured to extend supplemental wheels from a storage configuration into a ground support configuration in which the vehicle is able to make use of the supplemental wheels for additional ground support.

Example techniques have been presented for providing tracked vehicles with deployable towing wheels. Such techniques involve a track vehicle having a vehicle body, a track coupled to the vehicle body, and a wheel assembly coupled to the vehicle body. The wheel assembly includes a wheel and is operable to assume a towing position in which at least a portion of the wheel extends below the track and enables the tracked vehicle to be towed on the wheel without the track making ground contact.