Abstract: A garage door locking system includes a central elongated spindle having an inside end and an outside end. An outside locking member is positioned on the outside end of the spindle, and an inside locking member is positioned on the inside end of the spindle. An actuator yoke on the inside end of the spindle includes at least one end configured for connection to an end of an elongated lock bar or a snap latch cable.
Type:
Grant
Filed:
October 16, 2003
Date of Patent:
March 18, 2008
Assignee:
Amarr Company
Inventors:
A. Anthony East, Tracy Edmonds, Tony Jarrett, Martin Murdoch
Abstract: A garage door cable drum is disclosed for a sectional overhead door of a type having a substantially non-linear lift-weight to lift-height characteristic. The drum includes a generally spiral cable groove having a variable minor radius. The groove minor radius at any intermediate point along the groove is sized to provide a lift-cable moment arm that yields a corresponding cable lift force that is slightly less than an instantaneous lift weight of the garage door at any intermediate door elevation.
Type:
Grant
Filed:
April 4, 2005
Date of Patent:
March 18, 2008
Assignee:
Amarr Company
Inventors:
A. Anthony East, Darrin Brunk, Yannick Funk, Normand Savard, Mathieu Provencal