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:
Jun. 08, 2004
Filed:
Dec. 18, 2002
Applicant:
Inventors:
Yasuo Eto, Ibaraki, JP;
Hideki Kurosawa, Ibaraki, JP;
Yoshiaki Adachi, Ibaraki, JP;
Kenichi Takaada, Ibaraki, JP;
Assignee:
Hitachi Koki Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25B 2/314 ;
U.S. Cl.
CPC ...
B25B 2/314 ;
Abstract
In an electric power tool having a clutch ring for adjusting a fastening torque, an outer member which are lower in hardness than a base member of the clutch ring has a plurality of projections discontinuously arranged on the outer peripheral face of the base member