Ratchet wrench
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United States of America Patent
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May 29, 2018
Issued Date -
N/A
app pub date -
May 17, 2016
filing date -
Feb 4, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A ratchet wrench includes a first room, a second room, an engaging portion, a third room and a first groove in the function end thereof. Multiple ratchet wheels are received in the third room and one of which is rotatably received in the first room. Each ratchet wheel includes a first pivotal portion, a second pivotal portion and a first toothed portion which is defined in a curved and concaved manner in the outer periphery of the ratchet wheel. A pawl is located in the second room and has a second toothed portion which is engaged with the first toothed portion of the ratchet wheel. The distance defined between the deepest point of the first toothed portion to the first pivotal portion or the second pivotal portion is larger than the distance that the ratchet wheel shifts relative to the pawl within the first room.
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