Title: Sealed housings for a subminiature piezoelectric vibrator

Abstract: A housing for a subminiature piezoelectric quartz crystal vibrator element, in which a glass substrate has a recess formed in an upper surface thereof, the subminiature quartz crystal vibrator element being supported such as to be positioned within a periphery of the recess in the upper surface and separated by fixed distances from surfaces of the recess, a cover is disposed upon the glass substrate to hermetically seal the quartz crystal vibrator element between the cover and the glass substrate.

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Inventors: Yasuda, Yuh (Higashimurayama, JP)
Kizaki, Sigeru (Hanno, JP)
Miya, Yukio (Tokorozawa, JP)

Application Number: 907464
Filing Date: 1978-05-19
Publication_date: 1980-03-04
Assignee: Citizen Watch Company Limited (Tokyo, JP)
Primary Class(es): 310/344 29/25.35, 310/348
Other Classes:
US Patent Ref:

1886792	Nov, 1932	Crossley	310/348.
3073975	Jan, 1963	Bigler et al.	310/348.
3396287	Aug, 1968	Horton	310/344.
3913195	Oct, 1975	Beaver	310/351.
3931388	Jan, 1976	Hafner et al.	310/344.
3969640	Jul, 1976	Staudte	310/344.
4005321	Jan, 1977	Shibata	310/348.

Other Refs:
Primary Examiner: Budd, Mark O.
Assistant Examiner:
Attorney: Jordan; Frank J.