US3352444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-tightening pressure vessel closure
Assignee: Weir Group PLC
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Filing: 1965-12-28
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Granted: 1967-11-14
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Expires: 1985-12-28
Abstract
No abstract record available.
Inventors
- 👤 Anderson Harold Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:25
CPC Classifications
F; F16; F16J; F16J13/00; F16J13/02; F16J15/00; F16J15/02; F16J15/06; F16J15/08; F16J15/0881
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A SEAL FOR USE IN SEALING AN ANNULAR SPACE DEFINED BY FIRST AND SECOND MEMBERS HELD RIGIDLY RELATIVE TO EACH OTHER, SAID SEAL INCLUDING AN ANNULAR PROTRUSION OUTSTANDING FROM THE PERIPHERY OF ONE OF SAID MEMBERS, AND ENDLESS METAL SEAL RING ABUTTING ONE SIDE OF THE PROTRUSION AND AN ANNULAR CLOSURE PLATE ABUTTING AGAINST THE SEAL RING AND THE OTHER OF SAID MEMBERS, SAID RING HAVING PARALLEL BEARING FACES, SAID FACES BEING PERPENDICULAR TO THE DIRECTION OF ANY FORCE ACTING ON THE PLATE TENDING TO OPEN THE SPACE, TO ENSURE THAT ANY FORCE WITHIN THE SPACE TRYING TO OPEN THE SPACE FORCES THE PLATE INTO CLOSER ENGAGEMENT WITH THE RING.
Claim 2
Dependent Claim
110 words
A SEAL FOR USE IN SEALING AN ANNULAR SPACE DEFINED BY FIRST AND SECOND MEMBERS HELD RIGIDLY RELATIVE TO EACH OTHER, SAID SEAL INCLUDING AN ANNULAR PROTRUSION OUTSTANDING FROM THE PERIPHERY OF ONE OF SAID MEMBERS, AND ENDLESS METAL SEAL RING ABUTTING ONE SIDE OF THE PROTRUSION AND AN ANNULAR CLOSURE PLATE ABUTTING AGAINST THE SEAL RING AND THE OTHER OF SAID MEMBERS, SAID RING HAVING PARALLEL BEARING FACES, SAID FACES BEING PERPENDICULAR TO THE DIRECTION OF ANY FORCE ACTING ON THE PLATE TENDING TO OPEN THE SPACE, TO ENSURE THAT ANY FORCE WITHIN THE SPACE TRYING TO OPEN THE SPACE FORCES THE PLATE INTO CLOSER ENGAGEMENT WITH THE RING.
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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |