US3081098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seals for rotary shafts or the like
Assignee: UNIVERSAL METALLIC PACKING CO Ltd
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Filing: 1959-12-14
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Granted: 1963-03-12
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Expires: 1979-12-14
Abstract
No abstract record available.
Inventors
- 👤 Stephens James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:14
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/38; Y; Y10; Y10S; Y10S277/00; Y10S277/928
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
A SEAL FOR A ROTARY SHAFT COMPRISING A ROTATABLE RING HAVING A BORE THROUGH WHICH THE SHAFT CAN PASS WITH CLEARANCE, SAID ROTATABLE RING HAVING A SEALING FACE AT ONE END THEREOF AND ADJACENT SAID BORE WHICH IS ADAPTED TO ENGAGE WITH A SEALING FACE SURROUNDING AN OPENING IN A MEMBER THROUGH WHICH THE SHAFT PASSES, AND ALSO HAVING AN ANNULAR CYLINDRICAL RECESS OF LARGER DIAMETER AND COAXIAL WITH ITS BORE, SAID RECESS BEING OPEN AT THE END OF THE ROTATABLE RING OPPOSITE TO ITS SEALING FACE AND HAVING AN END WALL AT ITS INNER END, A RESILIENT COMPRESSIBLE SEALING RING LOCATED IN SAID RECESS TO PROVIDE A SEAL BETWEEN THE ROTATABLE SHAFT AND THE ROTATABLE RING, AND THE SHAFT BEING PROVIDED WITH AN ABUTMENT ADJACENT THE END OF THE ROTATABLE RING INTO WHICH THE RECESS OPENS, WHEREIN THE RESILIENT COMPRESSIBLE SEALING RING IS SO DIMENSIONED AS TO PROVIDE AN AXIAL FORCE BETWEEN SAID END WALL AND SAID ABUTMENT TO MAINTAIN THE SEALING FACES IN CONTACT WHEN THE FLUID PRESSURES AT BOTH SIDES OF THE SEAL ARE EQUALIZED.
Claim 2
Dependent Claim
178 words
A SEAL FOR A ROTARY SHAFT COMPRISING A ROTATABLE RING HAVING A BORE THROUGH WHICH THE SHAFT CAN PASS WITH CLEARANCE, SAID ROTATABLE RING HAVING A SEALING FACE AT ONE END THEREOF AND ADJACENT SAID BORE WHICH IS ADAPTED TO ENGAGE WITH A SEALING FACE SURROUNDING AN OPENING IN A MEMBER THROUGH WHICH THE SHAFT PASSES, AND ALSO HAVING AN ANNULAR CYLINDRICAL RECESS OF LARGER DIAMETER AND COAXIAL WITH ITS BORE, SAID RECESS BEING OPEN AT THE END OF THE ROTATABLE RING OPPOSITE TO ITS SEALING FACE AND HAVING AN END WALL AT ITS INNER END, A RESILIENT COMPRESSIBLE SEALING RING LOCATED IN SAID RECESS TO PROVIDE A SEAL BETWEEN THE ROTATABLE SHAFT AND THE ROTATABLE RING, AND THE SHAFT BEING PROVIDED WITH AN ABUTMENT ADJACENT THE END OF THE ROTATABLE RING INTO WHICH THE RECESS OPENS, WHEREIN THE RESILIENT COMPRESSIBLE SEALING RING IS SO DIMENSIONED AS TO PROVIDE AN AXIAL FORCE BETWEEN SAID END WALL AND SAID ABUTMENT TO MAINTAIN THE SEALING FACES IN CONTACT WHEN THE FLUID PRESSURES AT BOTH SIDES OF THE SEAL ARE EQUALIZED.
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) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |