US3156375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
External pressure seal for pressure vessels
Assignee: Individual
•
Filing: 1963-08-29
•
Granted: 1964-11-10
•
Expires: 1983-08-29
Abstract
No abstract record available.
Inventors
- 👤 Charles A Long
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:17
CPC Classifications
F; F16; F16J; F16J13/00; F16J13/02; F16J13/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
IN A PRESSURE VESSEL: A GENERALLY CYLINDRICAL SHELL PORTION HAVING AN OPEN END; A CLOSURE IN SAID OPEN END AND HAVING AN INNER FLANGE PORTION SUBSTANTIALLY CLOSING SAID OPEN END AND AN OUTER PORTION OF LESS DIAMETER THAN SAID OPEN END OF SAID SHELL AND DEFINING AN OUTWARDLY OPEN CHANNEL THEREBETWEEN; A LOCKING RING IN SAID CHANNEL INTERLOCKINGLY ENGAGED WITH SAID SHELL AND HELD THEREBY AGAINST AXIAL MOVEMENT; SAID INNER FLANGE PORTION OF SAID CLOSURE HAVING AN OUTER SURFACE BEARING DIRECTLY ON SAID LOCKING RING TO LOCK SAID CLOSURE IN SAID OPEN END; AN ANNULAR PRESSURE RING IN THE OUTER END OF SAID CHANNEL; AN ANNULAR BRIDGE RING RADIALLY SPANNING THE OPEN END OF SAID CHANNEL AND BEING FIXED TO SAID VESSEL; CONCENTRIC SEALING MEANS, EACH BEARING AGAINST SAID BRIDGE RING, ONE OF SAID SEALING MEANS SEALINGLY ENGAGING ADJACENT PORTIONS OF SAID CLOSURE AND SAID PRESSURE RING AND THE OTHER SEALINGLY ENGAGING ADJACENT PORTIONS OF SAID SHELL AND SAID PRESSURE RING; AND SELECTIVELY OPERABLE PRESSING MEANS FOR MOVING
Claim 2
Dependent Claim
168 words
IN A PRESSURE VESSEL: A GENERALLY CYLINDRICAL SHELL PORTION HAVING AN OPEN END; A CLOSURE IN SAID OPEN END AND HAVING AN INNER FLANGE PORTION SUBSTANTIALLY CLOSING SAID OPEN END AND AN OUTER PORTION OF LESS DIAMETER THAN SAID OPEN END OF SAID SHELL AND DEFINING AN OUTWARDLY OPEN CHANNEL THEREBETWEEN; A LOCKING RING IN SAID CHANNEL INTERLOCKINGLY ENGAGED WITH SAID SHELL AND HELD THEREBY AGAINST AXIAL MOVEMENT; SAID INNER FLANGE PORTION OF SAID CLOSURE HAVING AN OUTER SURFACE BEARING DIRECTLY ON SAID LOCKING RING TO LOCK SAID CLOSURE IN SAID OPEN END; AN ANNULAR PRESSURE RING IN THE OUTER END OF SAID CHANNEL; AN ANNULAR BRIDGE RING RADIALLY SPANNING THE OPEN END OF SAID CHANNEL AND BEING FIXED TO SAID VESSEL; CONCENTRIC SEALING MEANS, EACH BEARING AGAINST SAID BRIDGE RING, ONE OF SAID SEALING MEANS SEALINGLY ENGAGING ADJACENT PORTIONS OF SAID CLOSURE AND SAID PRESSURE RING AND THE OTHER SEALINGLY ENGAGING ADJACENT PORTIONS OF SAID SHELL AND SAID PRESSURE RING; AND SELECTIVELY OPERABLE PRESSING MEANS FOR MOVING
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) | 1967-11-10 | 1968-05-11 | 1968-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-10 | 1972-05-11 | 1972-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-10 | 1976-05-11 | 1976-11-10 | $7700.00 | Window Closed / Lapsed |