X-T flexure piezoelectric device

Claim 1

An improved piezoelectric crystal operative in a flexural mode comprising: a. an elongated piezoelectric bar having a generally rectangular cross section with four major side surfaces and two end surfaces; b. said bar having first or width and second or thickness transverse axes lying generally along the X crystallographic axis or frequency dependent transverse dimension and the Z crystallographic axis or frequency independent transverse dimension, respectively, and a longitudinal axis, one of said first and second transverse and said longitudinal axes being rotated, relative to a crystallographic axis of the piezoelectric material, and the other two of said first and second transverse and said longitudinal axes being substantially unrotated relative to the remaining crystallographic axes; c. said bar further having a greater width than thickness; d. an electrode fixedly positioned on each of said four major surfaces for producing flexures of said bar in a plane through the first transverse axis and the longitudinal axis of the bar upon proper energization of said electrodes; and e. crystal mounting and connecting means connected to said electrodes for physically mounting said crystal and providing an electrical connection to said electrodes.