Patent ID: 9021634
Filing Date: 2015-05-05
Classification: A61G

Abstract:
1. A stretcher, comprising: an upper frame for mounting a lifter thereon; a front leg pivotably attached to the upper frame; a rear leg pivotably attached to the upper frame; a fixed caster attached to one end of the front leg; a swivel caster attached to one end of the rear leg; an auxiliary swivel caster attached to the front leg; and a brake assembly for applying braking force to the swivel caster; wherein the front leg and rear leg are arranged to move in the same direction and in opposite directions and the brake assembly is arranged to apply braking force to the swivel caster when the stretcher is fully lowered and the front and rear legs are arranged in the same direction or opposite directions; wherein the upper frame is vertically adjustable by folding the front and rear legs relative to the upper frame; wherein the auxiliary swivel caster is positioned relative to the fixed caster such that the auxiliary swivel caster is in contact with the ground when the upper frame is fully lowered and the front leg is folded away from the rear leg, and the auxiliary swivel caster is out of contact with the ground when the upper frame is fully lowered and the front leg is folded toward the rear leg; wherein the brake assembly includes a spring-biased button that is depressed by engaging with the upper frame to actuate the brake when the upper frame is fully lowered, and is released from contact with the upper frame when the upper frame is raised to disengage the brake; and wherein a stopper is arranged to cooperatively engage the frame when in the lowered position to control swiveling movement of the auxiliary swivel caster.