公开(公告)号：US4054310A

公开(公告)日：1977-10-18

申请号：US620033

申请日：1975-10-06

Applicant: Leo Coopersmith

Inventor： Leo Coopersmith

IPC: E05C17/36

CPC classification number: E05C17/365 ,  Y10T292/283 ,  Y10T292/57 ,  Y10T70/5164

Abstract: A door security and release system wherein a door safety chain or similar linkage is tautly held in door securing condition against any efforts to release it from outside the door, with release means associated with the inside door operating member and adapted to be actuated by turning the door operating member.

Abstract translation: 一种门安全和释放系统，其中门安全链或类似连接件紧紧地保持在门固定状态，以防止任何从门外部释放的努力，其中释放装置与内门操作构件相关联并且适于通过转动 门操作构件。