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:
Mar. 13, 2007
Filed:
Mar. 02, 2005
Youhei Ohtake, Tokyo, JP;
Fumitaka Saigo, Tokyo, JP;
Hirofumi Hase, Tokyo, JP;
Sannohashi Co., Ltd., Tokyo, JP;
Abstract
An axial-force-detective fastening tool fastens a nut to a bolt, and at the same time, detects and axial force acting on the bolt. The tool has a socket body rotatably supported with a tool body and having a nut receiver. The socket body turns a nut received in the nut receiver around an axis of the socket body, to fasten the nut to a bolt. An ultrasonic sensor is supported with the tool body, is movable along an axis of the socket body, and is brought into contact with a front end of the bolt in the nut receiver. The ultrasonic sensor emits and receives ultrasonic waves to detect an axial force acting on the bolt. A sensor spring pushes the ultrasonic sensor to the front end of the bolt. The bolt includes a reference surface which is engaged by the ultrasonic sensor and is recessed in a tapered opening in an end of the bolt.