Longitudinal quartz crystal resonator

Details Longitudinal quartz crystal resonator Longitudinal quartz crystal resonator

1992-01-22

1993-06-08

Stephan, Steven L.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310348, 310367, 310368, H01L 4104, H01L 4108, H01L 4109

Patent

active

052182606

ABSTRACT:
A longitudinal quartz crystal resonator has at least two vibrating arms arranged in parallel to each other to undergo a longitudinal vibration. The vibrating arms are connected together at both ends thereof by connecting sections. A pair of bridge sections extend from central parts of respective ones of the outermost vibrating arms and are connected to flexional sections. The bridge sections are supported through surrounding frame sections by a bottom mount section. The flexional sections are connected to the frame sections so as to form surrounding openings. By such construction, an equivalent inductance and a series resistance are reduced in the longitudinal quartz crystal resonator so as to eliminate vibrating energy loss.

REFERENCES:
patent: 3488530 (1970-01-01), Staudte
patent: 3634787 (1972-01-01), Newell
patent: 4350918 (1982-09-01), Sato
patent: 4450378 (1984-05-01), Hermann et al.
patent: 4538461 (1985-09-01), Juptner et al.
patent: 4654663 (1987-03-01), Alsenz et al.
Patent Abstracts of Japan, vol. 014, No. 259 (E-0937) Jun. 5, 1990 & JP-A-20 79 511 (Seiko) Mar. 20, 1990.
Patent Abstracts of Japan, vol. 015, No. 121 (E-1049) Mar. 25, 1991 & JP-A-30 10 509 (Seiko) Jan. 18, 1991.
Patent Abstracts of Japan, vol. 014, No. 374 (E-0964) Aug. 13, 1990 & JP-A-21 35 907 (Seiko) May 24, 1990.

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