The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Apr. 26, 2016

Filed:

Mar. 06, 2014
Applicant:

Chervon (Hk) Limited, Wanchai, HK;

Inventors:

Liang Chen, Nanjing, CN;

Changxi Dai, Nanjing, CN;

Junliu Zhang, Nanjing, CN;

Assignee:

CHERVON (HK) LIMITED, Wanchai, HK;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B25B 21/00 (2006.01); B25B 21/02 (2006.01); B25B 13/46 (2006.01);
U.S. Cl.
CPC ...
B25B 21/004 (2013.01); B25B 21/02 (2013.01); B25B 13/463 (2013.01);
Abstract

A through-hole type power ratchet wrench includes a socket bracket, a swingable member, a ratchet socket, first and second pawls, and first and second resilient elements. The swingable member is disposed in the socket bracket and adjacent to an outer surface of the ratchet socket. The pawls are swingably fixed on the swingable member. The pawls, biased by the respective resilient elements, tend to engage with the outer surface of the ratchet socket. The wrench also includes a limiting member configured to isolate one of the first and second pawls from the ratchet socket. The limiting member is formed with an opening adapted for allowing one of the pawls to pass therethrough, and the limiting member is moveable about the ratchet socket between first and second positions. The opening of the limiting member faces towards the first pawl and second pawls when at the first and second positions, respectively.


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