Invention Grant
- Patent Title: Ratchet and method for making the same
- Patent Title (中): 棘轮和制作相同的方法
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Application No.: US13759076Application Date: 2013-02-05
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Publication No.: US09120212B2Publication Date: 2015-09-01
- Inventor: Cheng-Pu Yang
- Applicant: Cheng-Pu Yang
- Main IPC: B25B23/00
- IPC: B25B23/00 ; B25B13/46
Abstract:
A ratchet includes multiple ratchet teeth defined in the outer periphery thereof and a coated layer is coated along the outer periphery of the ratchet. A sand blasting device is used to blast sands to remove a part of the coated layer to define a circular endless opening on the coated layer, and the ratchet teeth protrude the coated layer from the openings.
Public/Granted literature
- US20140216211A1 RATCHET AND METHOD FOR MAKING THE SAME Public/Granted day:2014-08-07
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