Patent US2947451A successfully refreshed from Google Patents.
Patent US3144162A successfully refreshed from Google Patents.
US3144162A
Expired / Lapsed
US
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Closure for a pressure vessel
Assignee: Bethlehem Steel Corp
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Filing: 1961-08-14
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Granted: 1964-08-11
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Expires: 1981-08-14
Abstract
No abstract record available.
Inventors
- 👤 Richard E Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:43
CPC Classifications
F; F16; F16J; F16J13/00; F16J13/02; F16J13/12; B; B01; B01J; B01J3/00; B01J3/03; F16J15/00; F16J15/02; F16J15/06; F16J15/16; F16J15/166; Y; Y10; Y10S; Y10S277/00; Y10S277/91; Y10S277/921
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
CLOSURE MEANS FOR A PRESSURE VESSEL HAVING AN OPENING THEREIN PROVIDED WITH A SEAT THEREIN, SAID MEANS INCLUDING: (A) A CLOSURE MEMBER EXTENDING INTO SAID OPENING, (B) AN ANTI-EXTRUSION RING HAVING ONE SIDE IN CONTACT WITH SAID CLOSURE MEMBER AND THE OTHER SIDE EXPOSED TO THE PRESSURE OF SAID PRESSURE VESSEL, (C) THE OUTER FACE OF SAID ANTI-EXTRUSION RING BEING IN CONTACT WITH SAID SEAT AND THAT PART OF THE INNER FACE OF SAID ANTI-EXTRUSION RING WHICH IS ADJACENT THE CLOSURE MEMBER BEING EXPOSED TO THE PRESSURE OF SAID PRESSURE VESSEL, (D) A FIRST SEALING RING OF YIELDABLE MATERIAL IN CONTACT WITH SAID SEAT AND THE SIDE OF SAID ANTI-EXTRUSION RING EXPOSED TO THE PRESSURE OF SAID PRESSURE VESSEL, AND (E) A SECOND SEALING RING EXPOSED TO THE PRESSURE OF SAID PRESSURE VESSEL AND IN CONTACT WITH SAID CLOSURE MEMBER AND SAID PART OF SAID INNER FACE OF SAID ANTIEXTRUSION RING.
Claim 2
Dependent Claim
151 words
CLOSURE MEANS FOR A PRESSURE VESSEL HAVING AN OPENING THEREIN PROVIDED WITH A SEAT THEREIN, SAID MEANS INCLUDING: (A) A CLOSURE MEMBER EXTENDING INTO SAID OPENING, (B) AN ANTI-EXTRUSION RING HAVING ONE SIDE IN CONTACT WITH SAID CLOSURE MEMBER AND THE OTHER SIDE EXPOSED TO THE PRESSURE OF SAID PRESSURE VESSEL, (C) THE OUTER FACE OF SAID ANTI-EXTRUSION RING BEING IN CONTACT WITH SAID SEAT AND THAT PART OF THE INNER FACE OF SAID ANTI-EXTRUSION RING WHICH IS ADJACENT THE CLOSURE MEMBER BEING EXPOSED TO THE PRESSURE OF SAID PRESSURE VESSEL, (D) A FIRST SEALING RING OF YIELDABLE MATERIAL IN CONTACT WITH SAID SEAT AND THE SIDE OF SAID ANTI-EXTRUSION RING EXPOSED TO THE PRESSURE OF SAID PRESSURE VESSEL, AND (E) A SECOND SEALING RING EXPOSED TO THE PRESSURE OF SAID PRESSURE VESSEL AND IN CONTACT WITH SAID CLOSURE MEMBER AND SAID PART OF SAID INNER FACE OF SAID ANTIEXTRUSION 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) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |