Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1979-04-12
1980-08-05
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
73777, 310324, 338 4, 338 42, 357 26, H01L 4110
Patent
active
042164044
ABSTRACT:
There is disclosed an electromechanical transducer of the type employing a semiconductor diaphragm. The diaphragm is associated with an active area upon which is mounted at least one force responsive element. Surrounding the active area of the diaphragm is an annular ridge which is located on a surface opposite that containing the element. A cylindrical housing having a central aperture is secured to the diaphragm on the same surface as the element and with its aperture coaxially aligned with the active diaphragm area. The aperture in the housing being larger than the aperture of the annular ridge and underlies the same to provide an exposed area about the periphery of the element's active area. This area is used for the deposition or location of terminals which are coupled to the element. The area is insensitive to applied force due to relative size of the ridge and housing and thus conducting leads attached to the terminals do not interfere with the specifications associated with the transducer.
REFERENCES:
patent: 3325761 (1967-06-01), McLellan
patent: 3482197 (1969-12-01), Kondo et al.
patent: 3493912 (1970-02-01), Tull et al.
patent: 3568124 (1971-03-01), Sonderegger
patent: 3654579 (1972-04-01), Kurtz et al.
patent: 3739315 (1973-06-01), Kurtz et al.
patent: 3838379 (1974-09-01), Gieles et al.
Kurtz Anthony D.
Mallon Joseph R.
Budd Mark O.
Kulite Semiconductor Products Inc.
Plevy Arthur L.
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