The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 15, 1976
Filed:
Aug. 30, 1974
Applicant:
Inventors:
Kotaro Kato, Tokyo, JA;
Makoto Morimoto, Chiba, JA;
Assignee:
Kabushiki Kaisha Daini, , JA;
Primary Examiner:
Int. Cl.
CPC ...
G04C / ; H03B / ;
U.S. Cl.
CPC ...
58 2 / ; 310-91 ; 3311 / ;
Abstract
A quartz crystal timepiece incorporating a vibrator unit is disclosed. The vibrator unit is hermetically sealed in a case on which a condenser is fixed and the condenser compensates the oscillating frequency of said vibrator unit to a predetermined center frequency by suitably selecting the capacitance of the condenser after measuring the natural frequency of the vibrator unit. Then there is no need to adjust each vibrator unit to the predetermined center frequency during assembling process.