US3315972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing element for sealing two relatively movable members against each other
Assignee: Saab Bofors AB
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Filing: 1964-10-19
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Granted: 1967-04-25
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Expires: 1984-10-19
Abstract
No abstract record available.
Inventors
- 👤 Ahbeck Alvar Reinhold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:44
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3204; F15; F15B; F15B1/00; F15B1/02; F15B1/04; F15B1/08; F15B1/24; F15B2201/00; F15B2201/20; F15B2201/205; F15B2201/30; F15B2201/31; F15B2201/312; F15B2201/40; F15B2201/41; F15B2201/415; F15B2201/60; F15B2201/61; Y; Y10; Y10S; Y10S277/00; Y10S277/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A SEALING DEVICE FOR SEALING TWO RELATIVELY MOVABLE MEMBERS AGAINST EACH OTHER, SAID SEALING DEVICE COMPRISING A HOLLOW GENERALLY CYLINDRICAL MEMBER; A PISTON FITTED IN SAID CYLINDRICAL MEMBER FREELY SLIDABLE THEREIN, SAID PISTON HAVING IN ITS OUTER PERIPHERAL WALL AN ANNULAR GROOVE; AND A SOLID SEALING RING MADE OF ELASTIC MATERIAL FITTED IN SAID GROOVE, SAID RING HAVING AT ITS OUTER PERIPHERAL WALL TWO JUXTAPOSED CIRCUMFERENTIAL SURFACE PORTIONS RADIALLY STEPPED IN REFERENCE TO EACH OTHER, ONE OF SAID SURFACE PORTIONS HAVING AT LEAST PARTIALLY A SMALLER DIAMETER THAN THE OTHER, THE FACING EDGES OF SAID SURFACE PORTIONS BEING JOINED BY A GENERALLY RADIALLY DIRECTED SURFACE, THE SURFACE PORTION HAVING THE LARGER DIAMETER DEFORMING AGAINST AN ADJACENT WALL PORTION OF THE CYLINDRICAL MEMBER THEREBY SEALING THE PISTON AGAINST SAID MEMBER AND THE SURFACE PORTION HAVING THE SMALLER DIAMETER RESTRICTING FLUID FLOW.
Claim 2
Dependent Claim
140 words
A SEALING DEVICE FOR SEALING TWO RELATIVELY MOVABLE MEMBERS AGAINST EACH OTHER, SAID SEALING DEVICE COMPRISING A HOLLOW GENERALLY CYLINDRICAL MEMBER; A PISTON FITTED IN SAID CYLINDRICAL MEMBER FREELY SLIDABLE THEREIN, SAID PISTON HAVING IN ITS OUTER PERIPHERAL WALL AN ANNULAR GROOVE; AND A SOLID SEALING RING MADE OF ELASTIC MATERIAL FITTED IN SAID GROOVE, SAID RING HAVING AT ITS OUTER PERIPHERAL WALL TWO JUXTAPOSED CIRCUMFERENTIAL SURFACE PORTIONS RADIALLY STEPPED IN REFERENCE TO EACH OTHER, ONE OF SAID SURFACE PORTIONS HAVING AT LEAST PARTIALLY A SMALLER DIAMETER THAN THE OTHER, THE FACING EDGES OF SAID SURFACE PORTIONS BEING JOINED BY A GENERALLY RADIALLY DIRECTED SURFACE, THE SURFACE PORTION HAVING THE LARGER DIAMETER DEFORMING AGAINST AN ADJACENT WALL PORTION OF THE CYLINDRICAL MEMBER THEREBY SEALING THE PISTON AGAINST SAID MEMBER AND THE SURFACE PORTION HAVING THE SMALLER DIAMETER RESTRICTING FLUID FLOW.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |