发明名称 Spring force safety locking system for sectional doors
摘要 Hardware designed to improve safety and minimize the risk involved in installing, maintaining, and operating sectional doors that use spring mechanisms to facilitate door movement. A lock-on side bearing bracket bears up a spring mechanism on a garage door. This side bearing bracket includes a hook and a perpendicular tab to prevent the spring mechanism from dangerously releasing its energy when parts supporting the spring mechanism are removed or fail. A lock-on bottom roller bracket having a bottom bearing plate and a safety hook similarly prevents a potential, dangerous release of energy when the garage door lift cable is in tension. A safety latch with a latch bar and a latch cover acts as a lock for the garage door. The use of multiple safety features makes the garage door systems of the present invention particularly safe to operate and maintain.
申请公布号 US6401793(B1) 申请公布日期 2002.06.11
申请号 US20000547430 申请日期 2000.04.12
申请人 MARTIN DOOR MANUFACTURING, INC. 发明人 MARTIN DAVID O.
分类号 E05D13/00;E05D15/24;E05F15/00;(IPC1-7):E05F11/00 主分类号 E05D13/00
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