Invention Grant
- Patent Title: Ratchet wrench
- Patent Title (中): 棘轮扳手
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Application No.: US13523862Application Date: 2012-06-14
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Publication No.: US09032845B2Publication Date: 2015-05-19
- Inventor: Li-Ching Lin
- Applicant: Li-Ching Lin
- Main IPC: B25B13/46
- IPC: B25B13/46

Abstract:
A ratchet wretch includes a first recess, a second recess and a third recess. A ratchet wheel is rotatably located in the first recess and a pawl is located in the second recess. The pawl has a curved recess defined in the rear side thereof and a protrusion extending therefrom. A first face is defined between the protrusion and the curved recess. A second face is defined in the pawl and located away from the third recess. The rotatable unit comprises a rotatable member, a first hat and a resilient member. The rotatable unit has a circular rod pivotably connected to the third recess. The circular rod has a restriction slot and three top surfaces. One of the top surfaces contacts the second face to restrict the rotatable member from disengaging from the third recess. The first hat and the resilient member are located in the restriction slot.
Public/Granted literature
- US20130333525A1 RATCHET WRENCH Public/Granted day:2013-12-19
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