Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Chien-Chuan Kao0
Date of Patent
March 19, 2013
Patent Application Number
13597413
Date Filed
August 29, 2012
Patent Citations Received
Patent Primary Examiner
Patent abstract
A ratchet wrench includes a wrench body, a driving ratchet, a change-gear set, a retaining lid and a positioning rod. The driving ratchet is configured to removably engage with a tool part. In virtue of the cooperation between the change-gear set and the positioning rod, when the wrench body is turned toward a predetermined direction of the tool part, the driving ratchet can rotate in an increased speed, thereby improving the efficiency of operating the tool part.
Timeline
No Timeline data yet.
Further Resources
No Further Resources data yet.
