Axial-force-detective fastening tool, bolt, and method of...

Details Axial-force-detective fastening tool, bolt, and method of... Axial-force-detective fastening tool, bolt, and method of...

2007-03-13

2007-03-13

Thomas, David B. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Machine

C081S429000

Reexamination Certificate

active

11071784

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.

REFERENCES:
patent: 3969810 (1976-07-01), Pagano
patent: 3969960 (1976-07-01), Pagano
patent: 4899591 (1990-02-01), Kibblewhite
patent: 5226327 (1993-07-01), Fassina
patent: 5343785 (1994-09-01), Holt et al.
patent: 5699703 (1997-12-01), Habele
patent: 6332378 (2001-12-01), Loffler
patent: 2004/0129118 (2004-07-01), Junkers
patent: 4025430 (1992-02-01), None
patent: 04348878 (1992-12-01), None
patent: 2000-074764 (2000-03-01), None

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