Self-adjusting string extensiometer

Details Self-adjusting string extensiometer Self-adjusting string extensiometer

1976-07-16

1977-11-15

Stephan, Steven L.

Geometrical instruments

Area integrators

Electrical

33139, 33140, 33147R, 338 68, G01B 310, H01C 1000, G01B 702, G01D 100

Patent

active

040579042

ABSTRACT:
Apparatus for use in the measurement of changes in the spacing between objects includes a rotatable wire storage reel coupled, by means of replaceable gears, to the drive shaft of a potentiometer. The apparatus is mounted on a first object and a wire on the storage reel is extended and attached to a second object spaced a variable distance from the first object. Constant tension is applied to the wire storage reel by means of a spring extending between a spring supply reel and a spring take-up reel coupled to the wire storage reel.

REFERENCES:
patent: 3685358 (1972-08-01), Hubner et al.
patent: 3780440 (1973-12-01), Taylor
patent: 3791037 (1974-02-01), DiCiaccio et al.
patent: 3832781 (1974-09-01), Flagge

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