Auto-shift reversing mechanism
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United States of America Patent
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May 26, 2015
Grant Date -
Apr 17, 2014
app pub date -
Oct 17, 2012
filing date -
Oct 17, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A device that automatically actuates the reversing lever of a ratchet mechanism when the radial direction of the motor is changed. The auto-shift mechanism includes a worm gear that rotates with the motor, and a disc coupled to the worm gear that moves laterally as the worm gear rotates. Axial movement of the disc actuates a reversing lever of a ratchet mechanism by either pulling or pushing the reversing lever. A lost-motion mechanism can absorb an initial amount of torque so that the auto-shift mechanism can run its course prior to applying the torque to a fastener.
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