Device for determining when a threaded tube joint with screw lim

Details Device for determining when a threaded tube joint with screw lim Device for determining when a threaded tube joint with screw lim

1987-08-27

1988-12-20

Ruehl, Charles A.

Measuring and testing

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

Threaded fastener stress

73855, 7386221, G01B 718

Patent

active

047918160

ABSTRACT:
A device for determining when a threaded joint for steel tubes having a male element (1) with external threads (3) with a screw limiting stop (5), and a female element (2) with corresponding internal threads (4) and a corresponding screw limiting stop (6) is properly made up is provided. The device comprises a strain gauge (12) and means (10, 11) for applying said gauge on the external surface of the female element (2) such that the gauge can measure superficial deformations of the female element (2) in the longitudinal direction along one of the generatrix of the female element.

REFERENCES:
patent: 2568940 (1951-09-01), Wolf
patent: 3791205 (1974-02-01), Hooker
patent: 4023402 (1977-05-01), Watanabe
patent: 4573359 (1986-03-01), Carstensen

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