Accession Number : ADD011497

Title :   Stress Compensation Crystal Device.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Ballato,A

Report Date : 10 Jan 1985

Pagination or Media Count : 28

Abstract : This invention relates generally to piezoelectric crystal devices and more particularly, to high frequency, high precision quartz crystals used in applications in which shock, acceleration, and temperature stresses are present. This patent application describes a stress compensated quartz piezoelectric resonator disk. The resonator contains a thin resonator center disk and a thicker integral concentric peripheral support ring. Roughly pie-slice portions of the inner disk are cut away. The remaining bridges between the resonant disk and support ring are positioned and sized in accord with crystallographic theory so that forces applied to the support ring will not change the reasonant frequency of the disk.

Descriptors :   *Patent applications, *Quartz resonators, *Disks, *Piezoelectric crystals, Acceleration, High frequency, Bridges, Inventions, Rings, Thermal stresses

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE