RATCHET WRENCH
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United States of America Patent
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app pub date -
Feb 10, 2016
filing date -
Feb 10, 2016
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Abstract
A ratchet wrench includes a ratchet wheel made of metal and having a ratchet teeth section and a driving section. A pawl made of metal engages with the ratchet teeth section and is controlled by a switch to control the rotation direction of the ratchet wheel. A plate made of metal includes a coupling portion to which the ratchet wheel is coupled. The coupling portion includes a first through-hole through which the ratchet wheel extends. The pawl presses against an inner periphery of the first through-hole. The inner periphery of the first through-hole has a length in an axial direction smaller than a thickness of the ratchet teeth section. A stopper made of plastic material is mounted around a peripheral edge of the coupling portion and includes second and third through-holes respectively located corresponding to the driving section of the ratchet wheel and the switch of the direction changing unit.
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