Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1982-05-14
1984-04-03
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310329, 73517AV, 73516R, H01L 4108
Patent
active
044410441
ABSTRACT:
In addition to having at least one piezoelectric sensor element, a transducer is provided with at least one further measuring element, which is influenced by the state variable to be measured in the same way as the piezoelectric sensor element, and has its own signal lead.
The additional measuring element may also be a piezoelectric element which may be excited so as to produce mechanical vibrations by utilizing the inverse piezo-effect, the change of the vibration characteristics of the vibration system consisting of the excited piezo-element and its environment serving as a measurement value for a static or quasi-static measurement.
REFERENCES:
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patent: 3045131 (1962-07-01), Orlacchio
patent: 3070996 (1963-01-01), Schloss et al.
patent: 3082334 (1963-03-01), Riesen
patent: 3185869 (1965-05-01), Shoor
patent: 3274539 (1966-09-01), Sykes
patent: 3297968 (1967-01-01), Fowler
patent: 3311873 (1967-03-01), Schloss
patent: 3651353 (1972-03-01), Hugli et al.
patent: 4197478 (1980-04-01), Sivus
patent: 4258572 (1981-03-01), Loper, Jr.
patent: 4268912 (1981-05-01), Congdon
patent: 4346597 (1982-08-01), Cullen
Claassen Peter
Krempl Peter
Ruckenbauer Friedrich
Budd Mark O.
List Hans
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