Moveable seat for crystal in an oscillating crystal transducer s

Details Moveable seat for crystal in an oscillating crystal transducer s Moveable seat for crystal in an oscillating crystal transducer s

1976-10-20

1978-11-21

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310338, H01L 4110

Patent

active

041268016

ABSTRACT:
A transducer capable of measuring force or fluid pressure comprises one or more plate-like crystals; electrical means for exciting each crystal into resonance; a base upon which sits a first seating which supports the lower edge of said one crystal; a second seating disposed at the upper edge of the crystal so as to secure the crystal in a position perpendicular to said base; each seating comprising cylindrical or semi-cylindrical surfaces the cylindrical faces of which, are arranged to bear on the crystal edge so as to produce, in response to said force, a change of the resonant frequency of that crystal with respect to the other crystal or crystals.

REFERENCES:
patent: 3082333 (1963-03-01), Hufferd et al.
patent: 3201984 (1965-08-01), Hinnah et al.
patent: 3262019 (1966-07-01), Maltner et al.
patent: 3350583 (1967-10-01), Schiavone
patent: 3891870 (1975-06-01), Corbett

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