Spring force safety locking system for sectional doors
AssigneeMartin Door Manufacturing, Inc.
InventorDavid O. Martin
Life of this patent
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AssigneeMartin Door Manufacturing, Inc.
InventorDavid O. Martin
Estimating the term…
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.
A sectional door movably mounted within a support track system comprising:
Dependencies are inferred from the claim text.