Measuring and testing – Specimen stress or strain – or testing by stress or strain... – Specified electrical sensor or system
Patent
1993-07-30
1996-03-05
Raevis, Robert
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
Specified electrical sensor or system
2482065, G01B 716
Patent
active
054957702
ABSTRACT:
A device for measuring expansions, compressions and similar forces on length variable components or machine parts. In order to register even the smallest length variation of components with a transportable device, without having to essentially grip into the component, a housing is provided, in which two knives are arranged lying side by side in spaced apart relation, one of the knives being securely connected with the housing and the other knife being mounted in the housing for movement in the direction fo the length variation of the component to be measured. In the housing a lifting and lowering mechanism is provided, which by lowering the device energizes magnets that are included in the housing which secure the housing magnetically to the component to be measured, whereby the knife edges simultaneously grip into the surface of the component to be measured, and in the raised position of the device, the magnets are nullified and the knife edges are raised from the surface of the member being measured.
REFERENCES:
patent: 2189775 (1940-02-01), Bleakney
patent: 2198041 (1940-04-01), Peters
patent: 2416664 (1947-02-01), Ruge
patent: 2666262 (1954-01-01), Ruge
patent: 2805482 (1957-09-01), Schonstedt
patent: 2884698 (1959-05-01), Wursch
patent: 4294015 (1981-10-01), Drouin et al.
patent: 4303054 (1981-12-01), Lore
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