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US 4,231,011 AGranted
Discontinuous metal film resistor and strain gauges
AssigneeUniversity of Pittsburgh
InventorsRobert M. DelVecchio, Zvi H. Meiksin
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Abstract
An improved discontinuous film resistor and strain gauge is disclosed wherein the discontinuous metal film is maintained in a constant humidity in the range of 15% to 45% thereby substantially increasing the life of the strain gauge.
Claims6
A strain gauge comprising:
- a. a substrate composed of nonconductive material,
- b. a discontinuous metal film on the substrate,
- c. a plurality of electrodes attached to the metal film, and
- d. means for maintaining an environment having a constant humidity in the range of 15% to 45% about the discontinuous metal film.
1 more element
Dependencies are inferred from the claim text.