US3279644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure vessel closure
Assignee: Autoclave Engineers Inc
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Filing: 1964-02-25
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Granted: 1966-10-18
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Expires: 1984-02-25
Abstract
No abstract record available.
Inventors
- 👤 Walter W Robertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:54
CPC Classifications
F; F16; F16J; F16J13/00; F16J13/02; F16J13/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
IN A PRESSURE VESSEL HAVING A THREADED END, A PLURALITY OF CLOSURE MEMBERS SCREWED ONTO SAID THREADED END, A SERIES OF ANNULAR SEALS BETWEEN THE CLOSURE MEMBERS, EACH SEAL BEING SUBJECT INTERNALL TO THE INTERNAL VESSEL PRESSURE AND EXTERNALLY TO OUTSIDE PRESSURE, EACH SEALS BEING ARRANGED WITH THE SEAL OF SMALLEST DIAMETER ENGAGING THE OUTERMOST CLOSURE MEMBER AND WITH THE DIAMETER OF EACH SEAL INCREASING PROGRESSIVELY TO A MAXIMUM AT THE INNERMOST CLOSURE MEMBER WHEREBY THE OUTERMOST CLOSURE MEMBER CARRIES THE LOAD CORRESPONDING TO THE VESSEL PRESSURE ACTING OVER THE AREA OF SAID SMALLEST DIAMETER AND THE INNER CLOSURE MEMBERS EACH CARRY THE LOAD CORRESPONDING TO THE VESSEL PRESSURE ACTING OVER THE AREA BETWEEN ADJACENT SEALS OF THE SERIES.
Claim 2
Dependent Claim
119 words
IN A PRESSURE VESSEL HAVING A THREADED END, A PLURALITY OF CLOSURE MEMBERS SCREWED ONTO SAID THREADED END, A SERIES OF ANNULAR SEALS BETWEEN THE CLOSURE MEMBERS, EACH SEAL BEING SUBJECT INTERNALL TO THE INTERNAL VESSEL PRESSURE AND EXTERNALLY TO OUTSIDE PRESSURE, EACH SEALS BEING ARRANGED WITH THE SEAL OF SMALLEST DIAMETER ENGAGING THE OUTERMOST CLOSURE MEMBER AND WITH THE DIAMETER OF EACH SEAL INCREASING PROGRESSIVELY TO A MAXIMUM AT THE INNERMOST CLOSURE MEMBER WHEREBY THE OUTERMOST CLOSURE MEMBER CARRIES THE LOAD CORRESPONDING TO THE VESSEL PRESSURE ACTING OVER THE AREA OF SAID SMALLEST DIAMETER AND THE INNER CLOSURE MEMBERS EACH CARRY THE LOAD CORRESPONDING TO THE VESSEL PRESSURE ACTING OVER THE AREA BETWEEN ADJACENT SEALS OF THE SERIES.
References Cited (Backward Citations)
DE68519C
Cited
US2492006A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |