Seal between rotating parts,movement of which is relative to each other
Abstract
Abstract A SEAL FOR RELATIVELY ROTATABLE MEMBERS SUCH AS A SHAFT MEMBER AND A WALL MEMBER HAVING A SEALING SURFACE DISPOSED GENERALLY TRANSVERSELY TO THE AXIS OF THE SHAFT MEMBER, COMPRISING AN ANNULAR BODY PORTION ADAPTED TO BE MOUNTED ON THE SHAFT MEMBER, A FLEXIBLE LIP PROJECTING ANGULARLY FROM SAID BODY PORTION AND HAVING AT LEAST ONE CIRCUMFERENTIAL RIB PROJECTING FROM THE LIP ENGAGING THE SEALING SURFACE OF THE WALL MEMBER AND A PLURALITY OF FIN-SHAPED ELEMENT PROJECTING RADIALLY FROM SAID RIB DISPOSED GENERALLY PARALLEL TO THE SEALING SURFACE, SAID FINSHAPED ELEMENTS ADAPTED TO PRESS WITH A LIGHT PRESSURE AGAINST THE SEALING SURFACE WITH FREELY SUSPENDED SIDE EDGES AND WHICH, DUE TO FRICTION UPON RELATIVE ROTATION OF THE MEMBERS, DEFLECT REARWARDLY IN RELATION TO THE DIRECTION OF MOVEMENT OF THE SEALING RIB AND SEALING SURFACE THERE PROVIDING A PUMPING EFFECT DIRECTED RADIALLY FROM THE SEALING RIB.
Inventors
- 👤 Sven-Erik Malmstrom
Bibliographic Details
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |