Piezoelectric ceramic resonator mounting means

Details Piezoelectric ceramic resonator mounting means Piezoelectric ceramic resonator mounting means

1974-12-12

1977-04-12

Budd, Mark O.

Electrical generator or motor structure

Educational or construction units or kits

H01L 4104

Patent

active

040177521

ABSTRACT:
A piezoelectric ceramic resonator to be used for an electric wave filter or an impedance transformer, and a manufacturing method of the ceramic resonator of the above described type, is provided in which a piezoelectric ceramic wafer, held at nodes or points close to the nodes of the electrodes of the wafer between outer terminal plates, is dipped in a melt, or the like, of gap-forming materials to form a first layer of such materials on the resonator with a second layer of porous thermosetting resinous material formed on the surface of the first layer. The gap-forming materials forming the first layer is subsequently sublimated or evaporated and absorbed into the second layer to form a space between the resonator and the second layer with the resonator advantageously surrounded by the space for stable vibration.

REFERENCES:
patent: 3622816 (1971-11-01), McGrew
patent: 3643305 (1972-02-01), Furnival
patent: 3747176 (1973-07-01), Toyoshima

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