US 12,270,235 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 Dec. 27, 2022, as Appl. No. 18/089,106.
Application 18/089,106 is a continuation in part of application No. 17/855,041, filed on Jun. 30, 2022.
Claims priority of provisional application 63/217,468, filed on Jul. 1, 2021.
Prior Publication US 2023/0125735 A1, Apr. 27, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. E05D 13/00 (2006.01); B60P 1/43 (2006.01)
CPC E05D 13/123 (2013.01) [B60P 1/438 (2013.01); E05Y 2201/474 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A counterbalance hinge assembly, comprising:
a housing;
a first fixed end support; a second fixed end support;
the housing positioned between the first fixed end support and the second fixed end support;
the housing is configured to rotate relative to the first fixed end support and the second fixed end support;
a compression device is engaged to the housing, the compression device is configured to apply a bias to a rotation of the housing;
a cam follower holder, the cam follower holder comprising a first cam follower and a second cam follower;
the compression device biasing the cam follower holder;
a cam defining cam surfaces;
the housing is configured to drive against the first cam follower and impart a rotational force to the cam follower holder; and
the second cam follower is configured to drive against the cam surfaces of the cam to drive the cam follower holder against the bias of the compression device.