Patent US3197215A successfully refreshed from Google Patents.
US3197215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple-stage sealing assembly
Assignee: Individual
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Filing: 1962-10-24
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Granted: 1965-07-27
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Expires: 1982-10-24
Abstract
No abstract record available.
Inventors
- 👤 Arthur O A Hodge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:55
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/002; F16J15/006; Y; Y10; Y10S; Y10S277/00; Y10S277/908
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A PACKING ASSEMBLY FOR SEALING THE ANNULAR SPACE BETWEEN TWO RELATIVELY MOVABLE MEMBERS, COMPRISING; A PAIR OF AXIALLY SPACED ANNULAR RESILIENT SEALING RINGS EACH HAVING A SEALING SURFACE AND A CYLINDRICAL SUPPORTING SURFACE, THE SEALING SURFACES OF THE RING HAVING THE SAME DIAMETER AND THE SUPPORTING SURFACES THEREOF HAVING DIFFERENT DIAMETERS, AND AN ANNULAR DIFFERENTIAL PISTON ELEMENT INTERPOSED BETWEEN SAID RINGS, SAID ELEMENT HAVING END SURFACES DEFINING GENERALLY RADIALLY EXTENDING LATERAL EXTREMITES CONTACTING SAID RINGS, SAID ELEMENT ALSO HAVING A PAIR OF CONCENTRIC CYLINDRICAL SURFACES, EACH CORRESPONDING TO THE DIAMETER OF ONE OF SAID SUPPORTING SURFACES, RESPECTIVELY.
Claim 2
Dependent Claim
97 words
A PACKING ASSEMBLY FOR SEALING THE ANNULAR SPACE BETWEEN TWO RELATIVELY MOVABLE MEMBERS, COMPRISING; A PAIR OF AXIALLY SPACED ANNULAR RESILIENT SEALING RINGS EACH HAVING A SEALING SURFACE AND A CYLINDRICAL SUPPORTING SURFACE, THE SEALING SURFACES OF THE RING HAVING THE SAME DIAMETER AND THE SUPPORTING SURFACES THEREOF HAVING DIFFERENT DIAMETERS, AND AN ANNULAR DIFFERENTIAL PISTON ELEMENT INTERPOSED BETWEEN SAID RINGS, SAID ELEMENT HAVING END SURFACES DEFINING GENERALLY RADIALLY EXTENDING LATERAL EXTREMITES CONTACTING SAID RINGS, SAID ELEMENT ALSO HAVING A PAIR OF CONCENTRIC CYLINDRICAL SURFACES, EACH CORRESPONDING TO THE DIAMETER OF ONE OF SAID SUPPORTING SURFACES, RESPECTIVELY.
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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |