Patent ID: 7010825
Filing Date: 2006-03-14
Classification: A61G,B66B,E04F

Abstract:
1. A telescoping ramp assembly for interconnection to the entranceway of a structure, comprising: one or more ramp sections joined together and capable of selective linear extension away from the entranceway to the use disposition and selective linear retraction adjacent to the entranceway to an interfitting, nested non-use disposition with each ramp having a sloping upper surface and an underside; a plurality of wheels with at least one wheel mounted to the underside of each ramp section to facilitate the extension and retraction of that ramp section; a runway disposed on the ground surface for supporting the ramp sections and upon which the wheels of the ramp sections travel during the extension and retraction of the ramp sections; a porch assembly adjoined to the structure for housing the retractable and extensible ramp sections; motorized extension and retraction means mounted to the underside of one ramp section for selectively driving that ramp section in order to initiate the extension of all the ramp sections from the porch assembly and the retraction of all the ramp sections into the porch assembly; and, a pulley assembly mounted to the underside of the ramp sections and including a plurality of cables mounted to a plurality of drums and pulleys so that the cables wind and unwind during retraction and extension of the ramp sections in order to drive the movement of the ramps sections during extension and retraction.