Patent ID: 7976049

Claim:
An apparatus comprising: a wheelchair having a carriage; an operating lever; a driving rack cooperative with said wheelchair for driving said wheelchair; a locating rack assembled at a front side of said carriage of said wheelchair, said operating lever being mounted onto said carriage of said wheelchair; and an angular adjustment seat having an assembly side pivotally mounted to said locating rack by an adjuster such that said angular adjustment seat can swing thereabout so as to allow a position of said angular adjustment seat to be controlled, said operating lever having a liftable pivoting seat containing a connecting side and a mating side, said connecting side being aligned with said assembly side of said angular adjustment seat, said pivoting seat of said operating lever being mated with said angular adjustment seat by a limiting portion so as to cause said pivoting seat to be vertically movable, said operating lever having a mating side with a limiting rabbet, said limiting rabbet having a profile, said limiting rabbet having a guide opening extending outwardly.