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:
Jan. 06, 2015
Filed:
Jul. 13, 2011
Applicants:
Hiroshi Haga, Ibaraki, JP;
Hideyuki Hashimoto, Ibaraki, JP;
Hideyuki Tanimoto, Ibaraki, JP;
Inventors:
Assignee:
Hitachi Koki Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 6/00 (2006.01); B25B 23/14 (2006.01); B25F 5/00 (2006.01); B25B 21/00 (2006.01);
U.S. Cl.
CPC ...
B25B 21/002 (2013.01); B25B 23/1415 (2013.01); B25F 5/008 (2013.01); B25F 5/006 (2013.01);
Abstract
A power tool includes a brushless motor, a switching element, a power cable a rectifying device, a heat releasing member. The switching element controls a drive of the brushless motor. The power cable supplies an electric current to the brushless motor from power source. The rectifying device rectifies the electric current from the power cable. The heat releasing member is connected to the switching element and the rectifying device in order to enhance a cooling efficiency for the same.