Lock Assembly Including Threaded Drive Assembly and Related Methods
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United States of America Patent
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app pub date -
Jan 9, 2017
filing date -
Jan 19, 2016
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Abstract
A lock assembly may include a gear motor and a worm drive assembly. The worm drive assembly may include a first worm drive segment coupled to the gear motor and that includes a first threaded body, an unthreaded extension body extending outwardly from the first threaded body, and a pin extending radially outward at a distal end of the unthreaded extension body. A second worm drive segment may include a second threaded body having a bore therethrough rotatably mounted on the unthreaded extension body. The second threaded body may have a notch at a distal end thereof receiving the pin. A lead bolt may have a threaded bore therein receiving the first and second threaded bodies. The pin may cooperate with the notch to misalign the first and second threaded bodies to prevent forced positioning from the extended position to the retracted position.
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