Patent US3315836A successfully refreshed from Google Patents.
US3315836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure vessel closure
Assignee: Monsanto Co
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Filing: 1965-01-04
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Granted: 1967-04-25
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Expires: 1985-01-04
Abstract
No abstract record available.
Inventors
- 👤 George B Boon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:12
CPC Classifications
F; F16; F16J; F16J13/00; F16J13/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A PRESSURE VESSEL COMPRISING A PRESSURE CHAMBER HAVING A ROUNDED OPENING, A RADIALLY ENLARGED SHOULDER AT THE SAID OPENING, A PLANAR SEATING SURFACE ON THE SAID SHOULDER, A NORMALLY PLANAR INNER SEATING DISC, AN OUTER RESTRAINING HEAD HAVING THE INNER FACE THEREOF CONCAVE RELATIVE TO THE INTERIOR OF THE SAID PRESSURE VESSEL, FASTENING MEANS ON THE SAID OUTER RESTRAINING HEAD, A BEARING RING LOCATED BETWEEN THE SAID OUTER RESTRAINING HEAD AND THE SAID PLANAR DISC, THE SAID BEARING RING HAVING AN INNER CIRCUMFERENTIAL CHAMFER ON THE FACE THEREOF WHICH CONTACTS THE SAID DISC WHEREBY THE IMPOSITION OF AN INNER PRESSURE WITHIN THE SAID PRESSURE VESSEL CAUSES A BOWING OUTWARD OF THE SAID PLANAR DISC AGAINST THE CONCAVITY OF THE SAID OUTER RESTRAINING HEAD AND AGAINST THE CHAMFER OF THE BEARING RING.
Claim 2
Dependent Claim
131 words
A PRESSURE VESSEL COMPRISING A PRESSURE CHAMBER HAVING A ROUNDED OPENING, A RADIALLY ENLARGED SHOULDER AT THE SAID OPENING, A PLANAR SEATING SURFACE ON THE SAID SHOULDER, A NORMALLY PLANAR INNER SEATING DISC, AN OUTER RESTRAINING HEAD HAVING THE INNER FACE THEREOF CONCAVE RELATIVE TO THE INTERIOR OF THE SAID PRESSURE VESSEL, FASTENING MEANS ON THE SAID OUTER RESTRAINING HEAD, A BEARING RING LOCATED BETWEEN THE SAID OUTER RESTRAINING HEAD AND THE SAID PLANAR DISC, THE SAID BEARING RING HAVING AN INNER CIRCUMFERENTIAL CHAMFER ON THE FACE THEREOF WHICH CONTACTS THE SAID DISC WHEREBY THE IMPOSITION OF AN INNER PRESSURE WITHIN THE SAID PRESSURE VESSEL CAUSES A BOWING OUTWARD OF THE SAID PLANAR DISC AGAINST THE CONCAVITY OF THE SAID OUTER RESTRAINING HEAD AND AGAINST THE CHAMFER OF THE BEARING RING.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |