Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1979-10-11
1981-07-07
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310336, 128660, 73632, H01L 4108
Patent
active
042777127
ABSTRACT:
The rate of decay of oscillations caused by application of driving pulses to the spaced crystals of an acoustic electric transducer that are mounted on a base is increased by provision of slots in the base so as to attenuate Rayleigh waves flowing in the surface thereof that can induce crystal oscillation in the thickness mode by mode conversion.
REFERENCES:
patent: 2844809 (1958-07-01), Batchelder
patent: 3698051 (1972-10-01), Miller
patent: 3851300 (1974-11-01), Cook
patent: 4101795 (1978-07-01), Fukumoto et al.
patent: 4211948 (1980-07-01), Smith et al.
patent: 4217516 (1980-08-01), Iinuma et al.
patent: 4217684 (1980-08-01), Brisken et al.
Budd Mark O.
Hewlett--Packard Company
Timbie Donald N.
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