Patent ID: 7261356

Claim:
Apparatus comprising: a trailer; a ramp including an end attached to the trailer for pivotal movement of the ramp between a raised gate position and a lowered, inclined loading position; an elongate support attached to the wheeled body adjacent to the end of the ramp; a tension spring encircling the support and having a first tag end coupled to the end of the ramp and a second tag end coupled to the trailer and winding and unwinding in response to movement of ramp between its raised gate position and its lowered, inclined loading position, respectively; the first tag end disposed in a first fixture, for relative reciprocal movement, affixed to the end of the ramp; the second tag end disposed in a second fixture, for relative reciprocal movement, affixed to the trailer; and one of the first and second fixtures adjustable between a first position away from one of the trailer and the end of the ramp and a second position toward the one of the trailer and the end of the ramp.