Retractable tracted cart
First Claim
1. A convertible traction device for use with a vehicle having at least two drive wheels, comprising:
- a trailer for towing behind said vehicle and having a platform sized to receive the vehicle, hitch means and a road wheel assembly;
first means for selectively moving said road wheels between an operative ground engaging position and a retracted position, relative to said platform;
traction means for each side of said trailer and including a traction belt and belt supporting means;
second means for selectively pivotally moving the traction means between a retracted position above said platform and an operative ground engaging position outboard of the adjacent road wheel;
means for locking said traction means and said road wheels in their respective operative and retracted positions; and
drive means in said platform, engageable by the vehicle drive wheels, for driving said traction means when the vehicle is on the platform and the traction means are in their operative position.
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Accused Products
Abstract
A convertible traction device for permitting a road vehicle to be used in an off-road configuration is described. The device is provided as a trailer having a pair of retractable road wheels with a pair of traction belt assemblies mounted thereon. The traction belt assemblies each include an endless belt, a plurality of support wheels about which the belt is entrained and a supporting framework, each assembly being pivotally attached to the trailer chassis. During towing the road wheels support the trailer on the ground with the traction belt assemblies being held in a retracted position above the trailer platform. For off-road use the traction belt assemblies are pivoted downwardly until the belts engage the ground, the assemblies are locked in position and the road wheels are retracted. The vehicle is driven onto the platform so that the drive wheels thereof engage drive rollers mounted in the trailer chassis, which rollers, as the vehicle'"'"'s drive wheels rotate, impart driving movement to the traction belt. Operator controlled brakes on the drive rollers are used to stop the device and to turn the device to the left or the right.
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Citations
12 Claims
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1. A convertible traction device for use with a vehicle having at least two drive wheels, comprising:
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a trailer for towing behind said vehicle and having a platform sized to receive the vehicle, hitch means and a road wheel assembly; first means for selectively moving said road wheels between an operative ground engaging position and a retracted position, relative to said platform; traction means for each side of said trailer and including a traction belt and belt supporting means; second means for selectively pivotally moving the traction means between a retracted position above said platform and an operative ground engaging position outboard of the adjacent road wheel; means for locking said traction means and said road wheels in their respective operative and retracted positions; and drive means in said platform, engageable by the vehicle drive wheels, for driving said traction means when the vehicle is on the platform and the traction means are in their operative position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification