US 9,808,384 B2
Unilateral transition means for adapting a wheelchair
Stephen C. Golden, Jr., Menasha, WI (US)
Filed by Stephen C. Golden, Jr., Menasha, WI (US)
Filed on Jun. 25, 2014, as Appl. No. 14/314,030.
Claims priority of provisional application 61/840,341, filed on Jun. 27, 2013.
Prior Publication US 2015/0001833 A1, Jan. 1, 2015
Int. Cl. A61G 5/10 (2006.01); A61G 5/02 (2006.01); A61G 5/06 (2006.01)
CPC A61G 5/10 (2013.01) [A61G 5/02 (2013.01); A61G 5/06 (2013.01); A61G 5/1054 (2016.11); A61G 5/1083 (2016.11)] 20 Claims
OG exemplary drawing
 
1. A load transitioning apparatus capable of alternating a wheelchair between a first load-bearing configuration and a second load-bearing configuration, the wheelchair comprising a pair of rear drive wheels, a pair of forward caster wheels, and a frame, the load transitioning apparatus being operatively interposed between the frame of the wheelchair and a ground-contacting adaptive implement, the load transitioning apparatus comprising:
a) an arcuate bearing surface;
b) a moveable bearing capable of releasably engaging in load-bearing contact with the arcuate bearing surface;
c) a first spring capable of urging of the moveable bearing out of load-bearing engagement with the arcuate bearing surface;
d) a biasing mechanism capable of switching between a first state and a second state, the first state corresponding to a relaxed form of the first spring to prepare the load transitioning apparatus to transition from the first load-bearing configuration to the second load-bearing configuration, the relaxed form of the first spring permitting movement of the moveable bearing toward engagement with the arcuate bearing surface, the second state corresponding to a deflected form of the first spring to prepare the load transitioning apparatus to transition from the second load-bearing configuration to the first load-bearing configuration, the deflected form of the first spring urging the moveable bearing away from engagement with the arcuate bearing surface;
wherein, while the wheelchair is in the first load-bearing configuration the moveable bearing is maintained out of engagement with the arcuate bearing surface, with the pair of rear drive wheels and the pair of forward caster wheels of the wheelchair fully bearing a forward portion of a load supported by the wheelchair and, while the wheelchair is in the second load-bearing configuration the moveable bearing is maintained in load-bearing engagement with the arcuate bearing surface with the load transitioning apparatus transmitting the forward portion of the load supported by the wheelchair to the ground-contacting adaptive implement.