US 11,813,214 B2
Patient support lift assembly
Brian J. Tessmer, Kalamazoo, MI (US); Richard A. Derenne, Portage, MI (US); Gary L. Bartley, Kalamazoo, MI (US); and Bryan Garfoot, Portage, MI (US)
Assigned to Stryker Corporation, Kalamazoo, MI (US)
Filed by Stryker Corporation, Kalamazoo, MI (US)
Filed on Nov. 18, 2021, as Appl. No. 17/529,660.
Application 17/529,660 is a continuation of application No. 16/241,278, filed on Jan. 7, 2019, granted, now 11,179,283.
Application 16/241,278 is a continuation of application No. 15/133,835, filed on Apr. 20, 2016, granted, now 10,172,753, issued on Jan. 8, 2019.
Claims priority of provisional application 62/149,963, filed on Apr. 20, 2015.
Prior Publication US 2022/0071822 A1, Mar. 10, 2022
Int. Cl. A61G 7/012 (2006.01); A61G 7/005 (2006.01)
CPC A61G 7/012 (2013.01) [A61G 7/005 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A patient support apparatus comprising:
a base;
a frame supported relative to the base, the frame configured to support a mattress for supporting a patient thereon; and
a lift assembly for raising or lowering the frame relative to the base, the lift assembly including a leg assembly, a pair of crank arms, and an actuator, the leg assembly coupled to the frame and to the base, the leg assembly including a pair of spaced apart lifting legs, the pair of crank arms mounted at their upper ends to the lifting legs and at their lower ends to the base, the actuator having a fixed end mounted to the lifting legs and an extendible end mounted relative to the pair of crank arms, and the actuator being mounted relative to the lifting legs in a fixed orientation relative to the lifting legs wherein the actuator moves with the lifting legs when the lift assembly raises or lowers the frame.