公开(公告)号：US12031375B2

公开(公告)日：2024-07-09

申请号：US17583975

申请日：2022-01-25

Applicant: Aaron Bruss

Inventor： Aaron Bruss

IPC: E05F5/00 ,  B65H75/44 ,  E04H6/44 ,  E06B3/48 ,  E06B3/70

CPC classification number: E05F5/00 ,  B65H75/4447 ,  E04H6/44 ,  E06B3/483 ,  E05Y2201/21 ,  E05Y2201/242 ,  E05Y2201/26 ,  E05Y2201/266 ,  E05Y2600/45 ,  E05Y2600/46 ,  E05Y2900/108 ,  E06B2003/7044

Abstract: An emergency bi-fold door closing prevention system includes a building having an access opening with an upper edge. A bi-fold door is hingedly mounted to the building wall and includes a plurality of panels each being laterally elongated. The plurality of panels includes a bottom panel having a bottom edge that is positionable adjacent to a floor surface to define a closed position. A safety line assembly is attached to and extends between the building wall adjacent to the upper edge and the bi-fold door adjacent to the bottom edge. The safety line has an extendable length. The length of the safety line assembly extends when the bi-fold door moves toward the closed position below a threshold velocity. The length of the safety line assembly is inhibited from extending when the bi-fold door moves toward the closed position above the threshold velocity.

公开(公告)号：US20230235606A1

公开(公告)日：2023-07-27

申请号：US17583975

申请日：2022-01-25

Applicant: Aaron Bruss

Inventor： Aaron Bruss

IPC: E05F5/00 ,  E06B3/48 ,  E04H6/44 ,  B65H75/44

CPC classification number: E05F5/00 ,  E06B3/483 ,  E04H6/44 ,  B65H75/4447 ,  E06B2003/7044

Abstract: An emergency bi-fold door closing prevention system includes a building having an access opening with an upper edge. A bi-fold door is hingedly mounted to the building wall and includes a plurality of panels each being laterally elongated. The plurality of panels includes a bottom panel having a bottom edge that is positionable adjacent to a floor surface to define a closed position. A safety line assembly is attached to and extends between the building wall adjacent to the upper edge and the bi-fold door adjacent to the bottom edge. The safety line has an extendable length. The length of the safety line assembly extends when the bi-fold door moves toward the closed position below a threshold velocity. The length of the safety line assembly is inhibited from extending when the bi-fold door moves toward the closed position above the threshold velocity to prevent unimpeded falling of the bi-fold door.