Electrical generator or motor structure – Educational or construction units or kits
Patent
1974-02-11
1976-09-14
Budd, Mark O.
Electrical generator or motor structure
Educational or construction units or kits
310 89, H01L 4104
Patent
active
039809110
ABSTRACT:
An improved piezoelectric crystal unit provides a housing, a piezoelectric crystal element, and oppositely disposed mounting means for suspending the crystal element within the housing. A first set of three cradle means and a second set of three cradle means engage opposite faces of the crystal element. Each of the first set of cradle means contains a face member disposed adjacent the first face of the crystal element and an edge member disposed adjacent the peripheral edge of the crystal element and each of the second set of three cradle means contains a face member disposed adjacent the second face of the crystal element and an edge member disposed adjacent the peripheral edge of the crystal element. Integral with each of the first set of cradle means are elongated resilient legs exerting uniform pressures on one face of the crystal element and integral with each of the second set of cradle means are elongated resilient legs exerting uniform counterbalancing pressures on the other face of crystal element. The housing provides a nest and contains a rim having a pair of notches and an end wall having an embossed center portion. A cover having an end wall with an embossed center portion interfits with the housing to enclose the nest. A first circular center section engages the embossed center portion of the housing and a first terminal means integral with the circular center section extends through a first one of the notches to align the first set of three cradle means within the nest. A second circular center section engages the embossed center portion of the cover and a second terminal means integral with the second circular center section extends through a second one of the notches to align the second set of three cradle means within the nest.
REFERENCES:
patent: 2383262 (1945-08-01), Kuenstler
patent: 2409838 (1946-10-01), Cress
patent: 2457145 (1948-12-01), Gray
patent: 2464046 (1949-03-01), Kuenstler
patent: 3069572 (1962-12-01), Dick et al.
patent: 3333122 (1967-07-01), Christian
patent: 3622816 (1971-11-01), McGrew
patent: 3679919 (1972-07-01), Ichinose et al.
patent: 3746898 (1973-07-01), Austin
Budd Mark O.
CTS Corporation
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