Invention Grant
- Patent Title: Overhead door apparatus with enclosed counterbalance mechanism
- Patent Title (中): 具有封闭平衡机构的开关门装置
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Application No.: US10963339Application Date: 2004-10-12
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Publication No.: US07234502B2Publication Date: 2007-06-26
- Inventor: James J. O'Malley
- Applicant: James J. O'Malley
- Agency: Design IP
- Main IPC: E05F15/00
- IPC: E05F15/00
Abstract:
An overhead garage door with a counterbalance mechanism incorporated into a pocket or hollow section formed in the door.
Public/Granted literature
- US20050139332A1 Overhead door apparatus with enclosed counterbalance mechanism Public/Granted day:2005-06-30
Information query
