发明授权
- 专利标题： Quartz crystal timepiece
- 专利标题（中）： 石英水晶钟表
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申请号： US502185申请日： 1974-08-30
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公开(公告)号： US3962860A公开(公告)日： 1976-06-15
- 发明人: Kotaro Kato , Makoto Morimoto
- 申请人： Kotaro Kato , Makoto Morimoto
- 申请人地址： JA
- 专利权人： Kabushiki Kaisha Daini
- 当前专利权人： Kabushiki Kaisha Daini
- 当前专利权人地址： JA
- 优先权： JA48-102223 19730831
- 主分类号： G04G3/00
- IPC分类号： G04G3/00 ; G04F5/06 ; G04G17/04 ; H03B5/32 ; H05K1/02 ; H05K1/18 ; G04C3/00 ; H03B5/30
摘要：
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.
公开/授权文献
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