公开(公告)号：WO2021257291A1

公开(公告)日：2021-12-23

申请号：PCT/US2021/035862

申请日：2021-06-04

Applicant: CALDWELL MANUFACTURING COMPANY NORTH AMERICA, LLC

Inventor： SERFASS, Nathan C. ,  MCINNIS, James M. ,  MILLIGAN, Patrick E. ,  BRADY, Matthew N.

IPC: E05D15/44 ,  E05Y2201/624 ,  E05Y2800/292 ,  E05Y2800/298 ,  E05Y2900/148

Abstract: A multi-bar linkage assembly for a pivotally mounted window sash and, more particularly, a high-capacity hinge assembly is disclosed. The hinge assembly is less susceptible to deflection during operation and may be used with and support window vents more than 100 in. tall and weighing more than 400 lbs. Notwithstanding the hinge assembly's wide range of use, the hinge assembly stack height does not exceed the industry standard of 0.625 in. for conventional hinge assemblies incapable of use in heavy-duty applications. The hinge assembly may be used with standard form window frames without requiring redesigning or otherwise modifying the window frame's standard form cross-section.