Ramp system

摘要

A vehicle ramp system has multiple configurations. The simplest embodiment provides a ramp which can move between a retracted configuration and an extended “step in” configuration in which an outboard end of the ramp is closer to the ground than in the retracted configuration, so that the outboard end of the ramp functions as a lowered step. A preferred embodiment provides a fully retracted configuration, a partially extended “step in” configuration, a partially extended “curb ramp” configuration in which the outboard end of the ramp can engage a curb or sidewalk, and a fully extended configuration in which the outboard end of the ramp can engage a road surface of the road on which the vehicle carrying the ramp is supported.

主权项

1. A ramp system, comprising:
a main frame for mounting to a vehicle; the main frame having an inboard end and an outboard end relative to the inboard end; a ramp assembly carried by the main frame; the ramp assembly comprising:
an inboard ramp section having an inboard end and an outboard end and having an inclined inboard travel surface which generally descends from the inboard end of the frame toward the outboard end of the frame; andan outboard ramp section having an inboard end and an outboard end and having an inclined outboard travel surface which generally descends from the inboard end of the outboard ramp section to the outboard end of the outboard ramp section; the inboard ramp section carried by the main frame with the inboard end of the inboard ramp section adjacent the inboard end of the main frame; the outboard ramp section slidably carried by the main frame to be slidably movable between an outboardly extended position and an inboardly retracted position, relative to the main frame; the outboard ramp section being slidably movable between the outboardly extended position and the inboardly retracted position along an inclined path of constant slope; and the inboard travel surface and the outboard travel surface cooperating to form a ramp surface for travel between the inboard end of the inboard ramp section and the outboard end of the outboard ramp section.