Patent ID: 8910975
Filing Date: 2014-12-16
Classification: A61G,B60G,Y10S

Abstract:
1. A wheelchair comprising: a seat; a pair of drive wheels supporting the seat; a first front caster coupled to the seat such that the first front caster is moveable upwardly and downwardly with respect to the seat; a second front caster coupled to the seat such that the second front caster is moveable upwardly and downwardly with respect to the seat; a first rear caster coupled to the seat such that the first rear caster is moveable upwardly and downwardly with respect to the seat; a second rear caster coupled to the seat such that the second rear caster is moveable upwardly and downwardly with respect to the seat; at least one stabilizing assembly coupled to the first and second front casters; at least one trigger that controls the stabilizing assembly configured to sense positions of the first and second rear casters; wherein the trigger causes the stabilizing assembly to enter a disengaged state where the stabilizing assembly allows upward and downward movement of the first front caster and the second front caster relative to the frame when the first rear caster moves downward from a normal operating position relative to the frame and the second rear caster is in a normal operating position relative to the frame; and wherein the trigger causes the stabilizing assembly to enter an engaged state where upward movement of the first front caster and the second front caster relative to the frame is inhibited when both of the rear casters move downward from normal operating positions relative to the frame.