发明名称 |
Seal for a rotary vane pump |
摘要 |
A pump includes a housing and a shaft rotatable about an axis. The shaft has a shaft diameter and has a portion disposed within the housing. A plurality of retractable vanes is coupled to the shaft and each vane includes a first end that contacts the housing. A seal element is positioned to define a seal between the shaft and the housing. The seal element includes a first bushing, a second bushing, and a dry seal assembly including a wiper that defines a diameter that is smaller than the shaft diameter.
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申请公布号 |
US8342828(B2) |
申请公布日期 |
2013.01.01 |
申请号 |
US20090512508 |
申请日期 |
2009.07.30 |
申请人 |
RAPCO, INC.;WICHT JOHN L. |
发明人 |
WICHT JOHN L. |
分类号 |
F03C4/00;F04C2/00;F04C15/00 |
主分类号 |
F03C4/00 |
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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