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:
Aug. 09, 2011
Filed:
Jun. 08, 2009
Applicants:
Toshihiko Kushida, Osaka, JP;
Tatsuo Hirai, Otsu, JP;
Inventors:
Toshihiko Kushida, Osaka, JP;
Tatsuo Hirai, Otsu, JP;
Assignee:
Maeda Metal Industries, Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01L 3/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A tightening torque measuring unit capable of reducing errors with respect to either a clockwise or counterclockwise direction as soon as possible is provided. A tightening torque measuring unit, installed in a tightening device, includes a torque sensorthat detects a tightening torque and an amplifier that amplifies an output from the torque sensor. The amplifierorapplies a different gain to the output from the torque sensor depending on whether the tightening direction of the tightening apparatus is clockwise or counterclockwise.