Quartz crystal resonator

Details Quartz crystal resonator Quartz crystal resonator

1974-11-14

1978-11-07

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310320, 310368, H01L 4110

Patent

active

041248090

ABSTRACT:
A piezo electric resonator member is cut from a quartz crystal in a rotated -orientation and arranged for vibration in a thickness shear mode, the member being in the form of a bar elongated along either the X-axis or the Z'-axis having rectangular cross sections in planes parallel respectively to the XZ'- and Y'Z'-planes or XZ'- and XY'-planes. It is provided with metallized layers to serve as electrodes confined to a central zone of the surfaces running in the same direction as the XZ'-plane. The ends of the bar serve as support points.

REFERENCES:
patent: 2223537 (1940-12-01), Sykes
patent: 2306909 (1942-12-01), Sykes
patent: 3483402 (1969-12-01), Royer
patent: 3792294 (1974-02-01), Royer

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