Patent ID: 7922187
Filing Date: 2011-04-12
Classification: A61G

Abstract:
1. An atrophy-reducing wheelchair comprising: first and second side frames, each side frame including and at least one of the first and second side frames being modified to include a front wheel rotatably mounted to each front wheel bracket; a rear wheel rotatably mounted to each rear wheel mount, the front and rear wheels cooperating to support the side frames; first and second pivotally connected crossbars having upper and lower ends and together defining a plane substantially perpendicular to the first and second planes, the lower end of the first crossbar being pivotally connected to the second side frame and the upper end of the first crossbar carrying a first longitudinal bar lying substantially in the first plane and slidably connected to the first side frame, the lower end of the second crossbar being pivotally connected to the first side frame and an upper end of the second crossbar carrying a second longitudinal bar lying substantially in the second plane and slidably connected to the second side frame, the crossbars and longitudinal bars cooperating to permit motion of the first and second side frames between an open position in which the second side frame is offset from the first side frame by a seat width and a closed position in which the second side frame is offset from the first side frame by a collapsed width; a seat supported between the first and second longitudinal bars; and at least one linkage movably connected to the modified side frame at the pivot and the journal, the linkage operatively connecting a movable foot support to the rear wheel of the modified side frame, wherein rotation of the rear wheel drives the linkage to move the movable foot support in a substantially linear vertical oscillating motion.