COLLAPSIBLE INVALID'S WHEEL CHAIR WITH MANUAL DRIVE Russian patent published in 2002 - IPC

FIELD: transportation equipment. SUBSTANCE: wheel chair has collapsible frame composed of pair of sides and equipped with pivotal links, front drive wheels mounted above upper side members, rear rotary wheels, foot rest, flexible seat and back. Tubular guide for regulating mechanism is longitudinally positioned under seat. Pairs of pivotal links are joined from the left and from the right with their one side to vertical columns of tubular guide. Slide with handle is fixed on tubular guide. Tie-rods are attached to slide and opposite ends of tie-rods are pivotally connected to vertical columns of pair of sides. Pivotal links define pairs between vertical columns of pair of sides and are arranged at an angle to them. Tie-rods may be attached to rear as well as to front vertical columns of pair of sides. EFFECT: simplified construction, reduced weight, convenient operation and reduced manufacture cost. 2 cl, 3 dwg