Shape, AT-cut crystal oscillator

Details Shape, AT-cut crystal oscillator Shape, AT-cut crystal oscillator

1976-10-13

1978-03-14

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310369, 310348, H01L 4104, H01L 4118

Patent

active

040792811

ABSTRACT:
An improved AT-cut crystal oscillator for electronic watches. The AT-cut crystal oscillator is of substantially disc-shape. Furthermore, the AT-cut crystal oscillator is shaped in cross-section such that the periphery of the disc-shaped crystal oscillator is abruptly tapered. In the preferred embodiment, the cross-section is trapezoidal.

REFERENCES:
patent: 2261791 (1941-11-01), Bokovoy
patent: 2575819 (1951-11-01), Laird
patent: 2626363 (1953-01-01), Holmbeck
patent: 2676275 (1954-04-01), Bigler
patent: 2677064 (1954-04-01), Hill
patent: 2698909 (1955-01-01), Wright et al.

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