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.
Patent No.:
Date of Patent:
Dec. 03, 2013
Filed:
Dec. 17, 2010
Applicants:
Hongtao Zhou, Nanjing, CN;
Gan Wei, Nanjing, CN;
Inventors:
Hongtao Zhou, Nanjing, CN;
Gan Wei, Nanjing, CN;
Assignee:
Chervon Limited, Hong Kong, HK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25C 1/06 (2006.01); B25D 11/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
An electric hammer includes a striking device having a clamping mechanism. The clamping mechanism includes a clamping element, a sliding element, a first biasing device and a second biasing device. The sliding element is provided with a guide portion in which the clamping element is slidable between a first position where the clamping element is closed and a second position where the clamping element is opened. The biasing force generated by the first biasing device is smaller than that of the second biasing device when the clamping element is in the opened position.