Patent ID: 6494474
Filing Date: 2002-12-17
Classification: A61G,B62D,Y10S

Abstract:
A wheelchair having a seat and a frame that is generally parallel to a support surface on which the wheelchair is sitting and having an anti-tip mechanism, said anti-tip mechanism comprising:a support frame being adapted to be coupled to the wheelchair frame; a first and a second wheel support arm extending outwardly from said support frame and pivotally coupled thereto; a wheel rotatably connected to each of said support arms and spaced above the support surface when the support surface is generally flat; an adjusting mechanism coupled between said frame and said support arms, said mechanism adapted to change the position of said support arms relative to said frame and relative to the seat, said adjusting mechanism thereby being adapted to raise and lower said wheels; and a footplate disposed generally parallel to the ground, said footplate being mounted to the support frame independently of said support arms, wheels and adjusting mechanism, and being adapted to receive the feet of a wheelchair user, wherein said wheels are adjustable independently of said footplate to different fixed positions relative to the support frame, the support surface and the seat by operation of said adjusting mechanism and wherein said wheels do not necessarily engage the support surface during adjustment when the support surface is generally flat.