发明名称 |
Manufacture process of quartz vibrator |
摘要 |
Since etching of a crotch portion of quartz vibrator defined by segment 18, first segment 13, and second segment 17 advances in accordance with the crystal orientations of quartz, the shape of side surfaces of two quartz vibrating bars opposite to each other with this crotch portion in between can be made symmetric, whereby stress applied on the two quartz vibrating bars can be equalized. <IMAGE> |
申请公布号 |
EP0821481(A3) |
申请公布日期 |
2000.01.19 |
申请号 |
EP19970111221 |
申请日期 |
1997.07.03 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA;KINSEKI LIMITED |
发明人 |
SUGITANI, NOBUYOSHI;FUJIYOSHI, MOTOHIRO;HANJI, MOTOYASU |
分类号 |
G01P9/04;G01C19/56;H03H3/02 |
主分类号 |
G01P9/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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