Patent US3615097A successfully refreshed from Google Patents.
US3615097A
Expired / Lapsed
US
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Seal assembly
Assignee: Forsheda Gummifabrik AB
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Filing: 1969-02-03
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Granted: 1971-10-26
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Expires: 1989-02-03
Abstract
Abstract SEAL BETWEEN TWO CHAMBERS IN WHICH TWO DIFFERENT PRESSURES PREVAIL AND WHICH IS SEPARATED BY WALL THROUGH WHICH A SHAFT PASSES, COMPRISING A BODY RING OF RUBBER WHICH IS STRETCHED AROUND THE SHAFT, THEREBY FIXING IN RIGHT POSITION AN INTEGRAL ANNULAR LIP WHICH PRESSES AXIALLY ALONG AN ANNULAR SEALING SURFACE AGANIST THE SIDE OF THE WALL WHERE THE PREVAILING PRESSURE IS HIGHEST BY MEANS OF THE INHERENT TENSION OF THE LIP AND DUE TO THE INFLUENCE OF THE AMBIENT PRESSURE CHARACTERIZED THEREBY THAT THE FREE SURFACE OF LIP FACING THE WALL IS LITTLE COMPARED WITH THE RADIAL THICKNESS OF THE BODY RING.
Inventors
- 👤 Sven-Erik Malmstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:15
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3436; F16J15/3456
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |