发明授权
- 专利标题： Hydraulic pump with piston sealing
- 专利标题（中）： 带活塞密封的液压泵
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申请号： US97986申请日： 1979-11-28
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公开(公告)号： US4352499A公开(公告)日： 1982-10-05
- 发明人: Malcolm C. Foster
- 申请人： Malcolm C. Foster
- 申请人地址： GBX
- 专利权人： Fletcher Sutcliffe Wild Limited
- 当前专利权人： Fletcher Sutcliffe Wild Limited
- 当前专利权人地址： GBX
- 优先权： GBX46371/78 19781128
- 主分类号： F04B53/16
- IPC分类号： F04B53/16 ; F16J15/00 ; F16J15/48
摘要：
A reciprocable piston hydraulic pump is provided with a piston periphery sealing means 24 comprising, at the pressure side, a seal 25 of flexible material and adapted to surround the piston periphery, a ring 27 separating the seal 25 from a moulded pressure seal, with a reservoir 28 defined between the seal 25 and the pressure seal, and spring means 29 operable on the seal 25 to urge the latter towards the pressure seal 26.
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