| 发明名称 |
Flow rate control valve and flow rate control system |
| 摘要 |
A flow rate control valve comprises a driver in which a rotary shaft is rotated to adjust the opening degree of a valve body. The driver is an ultrasonic motor comprising a stator having piezoelectric elements mounted thereto and a rotor mounted to the rotary shaft and resiliently pressed against the stator.
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| 申请公布号 |
US6230738(B1) |
申请公布日期 |
2001.05.15 |
| 申请号 |
US20000558785 |
申请日期 |
2000.04.26 |
| 申请人 |
TOKYO KEISO CO., LTD. |
发明人 |
WATANABE YASUSHI;SENDA KEIICHIRO;FUJITA HIROSHI;HAYAMIZU NAOYA;HIRABAYASHI HIDEAKI |
| 分类号 |
F16K7/12;F16K31/00;F16K31/02;F16K31/50;H02N2/00;(IPC1-7):F16K31/02 |
主分类号 |
F16K7/12 |
| 代理机构 |
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代理人 |
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