发明名称 |
Shaft seal with lip lifting in response to shaft rotation and gas pressure |
摘要 |
Apparatus for effecting a seal between a rotary shaft and its enclosure includes a sealing element having an elastic lip portion coupled to the shaft for rotation therewith and a sealing portion associated with the enclosure, the elastic lip portion forming a contact seal with the sealing portion when the shaft is stationary or rotating slowly. The elastic lip portion tends to lift from the sealing portion to form a non-contact seal upon a predeterminable increase in the rate of shaft rotation. Compressed gas is introduced into a region between the rotary elastic lip portion and the sealing portion to form a gas cushion therebetween to facilitate lifting of the elastic lip portion.
|
申请公布号 |
US4565378(A) |
申请公布日期 |
1986.01.21 |
申请号 |
US19840682375 |
申请日期 |
1984.12.17 |
申请人 |
GMN GEORG MULLER NURNBERG GMBH |
发明人 |
WEHRFRITZ, HEINZ;BRUNKE, MICHAEL |
分类号 |
F16C33/76;F16J15/00;F16J15/40;(IPC1-7):F16J15/32;F16J15/34;F16J15/46 |
主分类号 |
F16C33/76 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|