| 发明名称 |
Wearless valve for cryorefrigerator |
| 摘要 |
An improved method of reducing wear dust and torque required to turn a multi-port rotary disc valve utilizes a thrust bearing to hold the valve seat and/or valve disc such that they are not in contact with each other, or have light contact each other.
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| 申请公布号 |
US7631505(B2) |
申请公布日期 |
2009.12.15 |
| 申请号 |
US20050581962 |
申请日期 |
2005.03.08 |
| 申请人 |
SUMITOMO HEAVY INDUSTRIES, LTD.;SUMITOMO (SHI) CRYOGENICS OF AMERICA, INC. |
发明人 |
SEITZ ERIC;GAO JIN LIN;LONGSWORTH RALPH C.;XU MINGYAO |
| 分类号 |
F25B9/00;F16K3/10;F16K5/00;F16K31/02;F16K31/04;F25B9/14 |
主分类号 |
F25B9/00 |
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