US 12,270,238 B2
Counterbalance hinge assembly
Robert Walden, Buford, GA (US); David Lay, Buford, GA (US); and Daye Zhang, Buford, GA (US)
Assigned to Austin Hardware & Supply, Inc., Lee's Summit, MO (US)
Filed by Austin Hardware & Supply, Inc., Lee's Summit, MO (US)
Filed on Jun. 30, 2022, as Appl. No. 17/855,041.
Claims priority of provisional application 63/217,468, filed on Jul. 1, 2021.
Prior Publication US 2023/0003068 A1, Jan. 5, 2023
Int. Cl. E05F 1/12 (2006.01); B60P 1/43 (2006.01); B60J 5/10 (2006.01)
CPC E05F 1/1223 (2013.01) [B60P 1/438 (2013.01); B60J 5/108 (2013.01); E05Y 2201/484 (2013.01); E05Y 2900/516 (2013.01); E05Y 2900/532 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A counterbalance hinge assembly, comprising:
a housing configured to engage to a movable member;
a compression device configured to at least partially counterbalance a weight of the movable member;
a cam follower holder rotatably engaged to the housing, the cam follower holder comprising a first cam follower and a second cam follower;
a cam defining slots having a varying angle of incline; and
the housing configured to drive against the first cam follower of the cam follower holder and impart a rotational force to the cam follower holder, and the second cam follower of the cam follower holder configured to drive against the slots of the cam to drive the cam follower holder against the compression device.