Implements or apparatus for applying pushing or pulling force – Inclined plane lifter
Patent
1988-11-21
1990-01-23
Watson, Robert C.
Implements or apparatus for applying pushing or pulling force
Inclined plane lifter
E02C 300
Patent
active
048953474
ABSTRACT:
A starting ramp assembly is intended for use with a wheeled vehicle for enhancing the starting ablility of the vehicle and for moving with the vehicle in a forward direction after the vehicle is clear thereof. The assembly includes a wedge-shaped ramp which has a generally rectangular ground-contacting base, including a frame which has plural, box-like regions formed therein. Plural base pads are mounted to the frame and are spring-biased to a position where the pads extend below the level of the base and provide a skid surface when the vehicle is clear of the ramp, the pads being shiftable upwards relative to the frame when the vehicle is on the ramp, providing a slip-resistant contact between the frame and the ground. The ramp includes an inclined, vehicle-support surface which extends upwards from one end of the base and an upright member extending between the other end of the base and vehicle-support surface. A length of chain is connected to the other end of the ramp and is attachable to the vehicle. A coil spring extends between a side of the ramp and the chain and provides direction orienting mechanism which is operable to direct the chain along a side of the ramp as the vehicle clears the ramp, causing end-for-end rotation of the ramp.
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patent: 4194724 (1980-03-01), Masegian
patent: 4542881 (1985-09-01), Naylor
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