Damped package for piezoelectric devices

Details Damped package for piezoelectric devices Damped package for piezoelectric devices

2007-11-20

2007-11-20

Dougherty, Thomas M. (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S31300R, C310S320000, C310S324000, C310S348000

Reexamination Certificate

active

11543279

ABSTRACT:
A packaging system for piezoelectric devices is provided that substantially reduces and avoids the deleterious effects of environmental vibrations and shocks with gas or fluid-filled chambers that drastically improve the resonator's ability to withstand unwanted disturbances and decrease or eliminate the attendant frequency shifts. The damped piezoelectric resonator packaging system combines a resonator package, a membrane and gas/fluid-filled chambers that dampen dynamic amplification of the resonator and firmly restrain the resonator within the packaging system. The selection of gas or fluid for the chamber depends upon variables such as the type of waves being propagated and interaction with the piezoelectric substrate.

REFERENCES:
patent: 4021898 (1977-05-01), Willis et al.
patent: 4333342 (1982-06-01), Gilden et al.
patent: 4676104 (1987-06-01), Cullen
patent: 102005032319 (2007-01-01), None

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