Invention Grant
- Patent Title: Door closer
- Patent Title (中): 闭门器
-
Application No.: US11137681Application Date: 2005-05-25
-
Publication No.: US07356878B2Publication Date: 2008-04-15
- Inventor: Keith Foster
- Applicant: Keith Foster
- Applicant Address: GB Birmingham
- Assignee: Samuel Heath & Sons PLC
- Current Assignee: Samuel Heath & Sons PLC
- Current Assignee Address: GB Birmingham
- Agency: Egbert Law Offices
- Priority: GB0413132.2 20050612
- Main IPC: E05F1/00
- IPC: E05F1/00

Abstract:
A door closer includes an anchor assembly for mounting on a door frame, an actuator assembly for mounting within the thickness of a door which is hinged for movement between open and closed positions, an operating member coupled by a linkage to the anchor assembly and mounted for a range of movements between a retracted position and an extended position, a resilient driving apparatus arranged to exert a driving force on the operating member, a damper mechanism operatively connected to the operating member so as to damp movement of the operating member at least in a direction towards the retracted position, and a resilient thrust device arranged to exert an increased driving force on the operating member over a defined part of its range of movement as the operating member approaches the retracted position.
Public/Granted literature
- US20050273975A1 Door closer Public/Granted day:2005-12-15
Information query