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:
Jun. 24, 2014

Filed:

Mar. 15, 2013
Applicant:

Basso Industry Corporation, Taichung, TW;

Inventor:

San-Yih Su, Taichung, TW;

Assignee:

Basso Industry Corp., Taichung, TW;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B25B 17/00 (2006.01); B25B 21/00 (2006.01); B25B 23/00 (2006.01); B25B 17/02 (2006.01);
U.S. Cl.
CPC ...
B25B 21/005 (2013.01); B25B 21/004 (2013.01); B25B 23/0078 (2013.01); B25B 17/00 (2013.01); B25B 21/002 (2013.01); B25B 17/02 (2013.01); B25B 21/00 (2013.01);
Abstract

A pneumatic driven ratchet wrench comprises: a wrench housing; a pneumatic motor; a ratchet wheel unit; two gear members; an urging member for biasing the gear members to engage the ratchet wheel; a transmission unit connected to the gear members and driven by the pneumatic motor; and a gear-selecting unit including an operating knob, a switching member and two pushing members. The operating knob is mounted on the wrench housing and is disposed distal from a head section of the wrench housing for driving movement of the pushing members. Each of the pushing members pushes a respective one of the gear members to move away from the ratchet wheel unit when moved from a releasing position to a pushing position.


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