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:
Apr. 02, 1996
Filed:
Jun. 03, 1994
Tadahiro Ohmi, Sendai, JP;
Nobukazu Ikeda, Osaka, JP;
Ryosuke Dohi, Osaka, JP;
Kunio Nagai, Osaka, JP;
Eiji Ideta, Osaka, JP;
Koji Nishino, Osaka, JP;
Michio Yamaji, Osaka, JP;
Tsutomu Shinohara, Osaka, JP;
Naofumi Yasumoto, Osaka, JP;
Fujikin Incorporated, Osaka, JP;
Abstract
A reference range of tightening torques is predetermined relative to the rotation angle of a threaded member as normally tightened. In tightening up a nut on an externally threaded member, the tightening torque is detected by a torque sensor every time the nut is rotated through a specified angle, and whether the tightening torque relative to the rotation angle is within the reference range is judged by a microcomputer. The result of judgment is indicated by a light-emitting diode and a buzzer.