US3302432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seals for pressure vessels or the like
Assignee: Mather and Platt Ltd
•
Filing: 1964-05-21
•
Granted: 1967-02-07
•
Expires: 1984-05-21
Abstract
No abstract record available.
Inventors
- 👤 John S Woollatt
- 👤 Davey Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:11
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/168; D; D06; D06B; D06B23/00; D06B23/14; D06B23/18; D06C; D06C7/00; D06C2700/00; D06C2700/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A SEAL FOR AN OPENING IN A PRESSURE VESSEL THROUGH WHICH MATERIAL TO BE TREATED CAN BE CONTINUOUSLY PASSED FOR TREATMENT COMPRISING A HOUSING ENCLOSING A MAJOR PART OF AN INFLATABLE OPEN-ENDED ELEMENT, BACKING MEMBER, A PLUG CLOSING EACH END OF THE ELEMENT, AND AIR INLET MEANS IN AT LEAST ONE OF SAID PLUGS WHEREBY THE ELEMENT
Claim 2
Dependent Claim
57 words
A SEAL FOR AN OPENING IN A PRESSURE VESSEL THROUGH WHICH MATERIAL TO BE TREATED CAN BE CONTINUOUSLY PASSED FOR TREATMENT COMPRISING A HOUSING ENCLOSING A MAJOR PART OF AN INFLATABLE OPEN-ENDED ELEMENT, BACKING MEMBER, A PLUG CLOSING EACH END OF THE ELEMENT, AND AIR INLET MEANS IN AT LEAST ONE OF SAID PLUGS WHEREBY THE ELEMENT
References Cited (Backward Citations)
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Cited
US1632760A
Cited
US2606046A
Cited
US2736632A
Cited
US2932183A
Cited
US2974512A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |