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:
May. 21, 2013
Filed:
Feb. 16, 2010
Kyo Kan, Tokyo, JP;
Shozo Aikawa, Tokyo, JP;
Tomohiro Ogata, Tokyo, JP;
Naoya Masuda, Tokyo, JP;
Hiroshi Tsuji, Tokyo, JP;
Kyo Kan, Tokyo, JP;
Shozo Aikawa, Tokyo, JP;
Tomohiro Ogata, Tokyo, JP;
Naoya Masuda, Tokyo, JP;
Hiroshi Tsuji, Tokyo, JP;
Tohnichi Mfg. Co. Ltd., Tokyo, JP;
Abstract
To make improvements in torque wrenches with a torque limiter that uses a cam mechanism and to provide a torque wrench that realizes more stable operation and is capable of highly precise tightening. In a torque wrench with a torque limiter that uses a cam mechanism, a solid columnar roller memberis engaged with a cam partof a cam shaftsuch that it is rotatably supported by a roller support lever membermounted in a head portionsuch as to be rotatable around a support shaftand such that it is pressed against the cam partby a spring force transmitting rodbiased by a torque setting spring. The roller support lever memberis configured such that the distance rfrom the support shaftto a point of application of force of the spring force transmitting rodis longer than the distance rfrom the support shaftto the roller member