Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1986-12-10
1988-06-14
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310322, H01L 4108
Patent
active
047514191
ABSTRACT:
In this piezoelectric oscillation assembly there are included several piezoelectric oscillation devices, each including a first oscillation plate, a piezoelectric oscillation element attached to the first oscillation plate, and a second oscillation plate layered against the first oscillation plate so as to define an acoustically enclosed space between them. At least one of the oscillation plates is common to all of the several piezoelectric oscillation devices. It may be the first oscillation plate which is common to these several piezoelectric oscillation devices, or the second oscillation plate, or both. And the acoustically enclosed spaces of these several piezoelectric oscillation devices may be mutually isolated, or alternatively a one common acoustically enclosed space may be defined between the first oscillation plate and the second oscillation plate for all of these several piezoelectric oscillation devices.
REFERENCES:
patent: 3150347 (1964-09-01), Hanish
patent: 3745384 (1973-07-01), Blanchard
patent: 3970878 (1976-07-01), Berglund
patent: 4284921 (1981-08-01), Lemonon et al.
patent: 4641054 (1987-02-01), Takahata et al.
Budd Mark O.
Nitto Incorporated
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