Patent US3331101A successfully refreshed from Google Patents.
US3331101A
Expired / Lapsed
US
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Shaft seal
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1966-08-22
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Granted: 1967-07-18
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Expires: 1986-08-22
Abstract
No abstract record available.
Inventors
- 👤 Jr Doyle E Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:19
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/40; F16J15/406; B; B29; B29C; B29C48/00; B29C48/25; B29C48/254; B29C48/36; B29C48/50; B29C48/03; Y; Y10; Y10S; Y10S425/00; Y10S425/243
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN COMBINATION: AN ENCLOSURE FOR HANDLING VISCOUS MATERIALS HAVING A SHAFT EXTENDING FROM ONE END THEREOF, SAID SHAFT BEING AN INTEGRAL PART OF A SCREW FOR CONVEYING SAID VISCOUS MATERIALS IN SAID ENCLOSURE AWAY FROM SAID END OF THE ENCLOSURE; AND A MEMBER CONNECTED TO THE ENCLOSURE AND ABOUT THE ROTATABLE SHAFT WHICH PREVENTS THE VISCOUS MATERIALS WHICH ENTER THE MEMBER BEING FORCED BACK INTO THE ENCLOSURE, SAID MEMBER HAVING A CHAMBER FORMED ADJACENT THE ROTATABLE SHAFT, AND THE SURFACES ADJACENT THE ROTATABLE SHAFT AND ON EACH SIDE OF THE CHAMBER BEING FORMED TO CARRY MATERIAL TOWARD THE CHAMBER, SAID MEMBER ALSO HAVING A DISCHARGE PORT EXTENDING FROM THE CHAMBER TO ITS OUTSIDE SURFACE AND OUTSIDE THE ENCLOSURE.
Claim 2
Dependent Claim
118 words
IN COMBINATION: AN ENCLOSURE FOR HANDLING VISCOUS MATERIALS HAVING A SHAFT EXTENDING FROM ONE END THEREOF, SAID SHAFT BEING AN INTEGRAL PART OF A SCREW FOR CONVEYING SAID VISCOUS MATERIALS IN SAID ENCLOSURE AWAY FROM SAID END OF THE ENCLOSURE; AND A MEMBER CONNECTED TO THE ENCLOSURE AND ABOUT THE ROTATABLE SHAFT WHICH PREVENTS THE VISCOUS MATERIALS WHICH ENTER THE MEMBER BEING FORCED BACK INTO THE ENCLOSURE, SAID MEMBER HAVING A CHAMBER FORMED ADJACENT THE ROTATABLE SHAFT, AND THE SURFACES ADJACENT THE ROTATABLE SHAFT AND ON EACH SIDE OF THE CHAMBER BEING FORMED TO CARRY MATERIAL TOWARD THE CHAMBER, SAID MEMBER ALSO HAVING A DISCHARGE PORT EXTENDING FROM THE CHAMBER TO ITS OUTSIDE SURFACE AND OUTSIDE THE ENCLOSURE.
References Cited (Backward Citations)
US2487177A
Cited
US2920347A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |