Ratchet wrench with a direction switching device
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United States of America Patent
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Jun 7, 2016
Grant Date -
Jul 3, 2014
app pub date -
Dec 6, 2013
filing date -
Dec 28, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A ratchet wrench includes a direction switching device. The direction switching device includes two switching members for controlling the rotational direction of a gear, a resilient unit disposed among a body and the switching members for biasing the switching members away from the gear, and a ring unit disposed rotatably on the body. The ring unit includes a convex portion and a concave portion, and is operable to allow the convex portion and the concave portion to act on the switching members, so that one of the switching members comes into contact with the gear, while the other of the switching members is removed from the gear. When no external force is applied to the ring unit, the switching members are biased by the resilient unit to remove from the gear.
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