Patent US3322431A successfully refreshed from Google Patents.
US3322431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing element for rotary mechanical seal
Assignee: JOHN CRANE HOUDAILLE Inc A CORP OF
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Filing: 1963-11-29
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Granted: 1967-05-30
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Expires: 1983-11-29
Abstract
No abstract record available.
Inventors
- 👤 Archie J Solari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:55
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3436; F16J15/344
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A MECHANICAL SEAL ASSEMBLY COMPRISING A SEALING WASHER, A HOUSING AND AN ANNULAR SEALING ELEMENT OF ELASTOMERIC MATERIAL FOR EFFECTING A SEAL BETWEEN THE SEALING WASHER AND HOUSING, SAID SEALING WASHER BEING AXIALLY MOVABLE RELATIVE TO SAID HOUSING AND SAID SEALING WASHER AND HOUSING HAVING OPPOSED RADIALLY SPACED WALLS DEFINING IN PART AN ANNULAR CAVITY HAVING AN ORIGINAL RADIAL DIMENSION IN WHICH SAID SEALING ELEMENT IS DISPOSED, SAID SEALING ELEMENT IN RADIAL CROSS SECTION COMPRISING A FIRST PART CONTACTING ONE OF SAID OPPOSED WALLS, A SLEEVE PART CONTACTING THE OTHER OF SAID OPPOSED WALLS, AND A FLEXIBLE CONNECTION BETWEEN THE FIRST PART AND THE SLEEVE PART, SAID SLEEVE PART BEING OF PROGRESSIVELY GREATER THICKNESS
Claim 2
Dependent Claim
114 words
A MECHANICAL SEAL ASSEMBLY COMPRISING A SEALING WASHER, A HOUSING AND AN ANNULAR SEALING ELEMENT OF ELASTOMERIC MATERIAL FOR EFFECTING A SEAL BETWEEN THE SEALING WASHER AND HOUSING, SAID SEALING WASHER BEING AXIALLY MOVABLE RELATIVE TO SAID HOUSING AND SAID SEALING WASHER AND HOUSING HAVING OPPOSED RADIALLY SPACED WALLS DEFINING IN PART AN ANNULAR CAVITY HAVING AN ORIGINAL RADIAL DIMENSION IN WHICH SAID SEALING ELEMENT IS DISPOSED, SAID SEALING ELEMENT IN RADIAL CROSS SECTION COMPRISING A FIRST PART CONTACTING ONE OF SAID OPPOSED WALLS, A SLEEVE PART CONTACTING THE OTHER OF SAID OPPOSED WALLS, AND A FLEXIBLE CONNECTION BETWEEN THE FIRST PART AND THE SLEEVE PART, SAID SLEEVE PART BEING OF PROGRESSIVELY GREATER THICKNESS
References Cited (Backward Citations)
US3125347A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |