Apparatus for measuring the pre-tension of a threaded bolt

Details Apparatus for measuring the pre-tension of a threaded bolt Apparatus for measuring the pre-tension of a threaded bolt

1978-10-26

1980-01-29

Goldberg, Gerald

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

Threaded fastener stress

81 5738, G01L 524

Patent

active

041855043

ABSTRACT:
An apparatus for measuring the pre-tension of a threaded bolt by means of a two part measuring rod introduced into a central hole of the threaded bolt and of a length measuring device.
The measuring rod includes an upper rod threaded to a lower tube which is secured against rotation. Rotation of the threaded rod by a motor moves the end of the measuring rod in or out of the central hole.

REFERENCES:
patent: 2562831 (1951-07-01), Stone
patent: 2995033 (1961-08-01), Stifano, Jr.
patent: 3162071 (1964-12-01), Biach
patent: 3837694 (1974-09-01), Frisch et al.
patent: 3877326 (1975-04-01), Kock et al.
patent: 3943819 (1976-03-01), Charron
patent: 3995828 (1976-12-01), Orban

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