US2818995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vessel with protective metal lining
Assignee: Shell Development Co
•
Filing: 1954-12-13
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Granted: 1958-01-07
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Expires: 1974-12-13
Abstract
No abstract record available.
Inventors
- 👤 Howard Q Duguid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:22
CPC Classifications
B; B65; B65D; B65D85/00; B65D85/70; B65D85/84; B01; B01J; B01J19/00; B01J19/0053; B01J19/0073; B01J19/02; F; F16; F16L; F16L58/00; F16L58/02; F16L58/04; F16L58/08; F28; F28F; F28F19/00; F28F19/02; F28F19/06; B01J2219/00; B01J2219/02; B01J2219/0204; B01J2219/0236; B01J2219/025; B01J2219/0277; B01J2219/0286; F28F2275/00; F28F2275/06; Y; Y10; Y10S; Y10S220/00; Y10S220/917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A METALLIC VESSEL HAVING A STEEL OUTER SHELL, A PROTECTIVE METAL LINING DISPOSING WITHIN THE SHELL WITH ONE FACE THEREOF ADJACENT THE INNER SURFACE OF THE SHELL, SAID LINING BEING FORMED OF SEVERAL PLACES AND LAID WITH THE MARGINS THEREOF SPACED APART TO PROVIDE AN INTERVENING SLOT, MEANS COMPRISING WELDS OF PROTECTIVE METAL WITHIN SAID SLOT BETWEEN THE STEEL SHELL AND SAID MARGINS OF THE LINING CONNECTING THE LINING TO THE OUTER SHELL, SAID WELDS COVERING COMPLETELY THE SURFACE OF THE SHELL BETWEEN SAID MARGINS, A STRIP OF PROTECTIVE METAL DISPOSED AGAINST THE OTHER FACE OF THE LINING AND SPANNING SAID SLOT, AND CONTINUOUS WELDS OF PROTECTIVE METAL JOINING SAID STRIP TO THE SAID OTHER FACE OF THE LINING, SAID SHELL AND THE WELDS WITHIN SAID SLOT HAVING A TELLTALE HOLE EXTENDING THERETHROUGH AND THROUGH SAID WELDS AND COMMUNICATING DIRECTLY WITH THE SPACE IMMEDIATELY BENEATH SAID STRIP.
Claim 2
Dependent Claim
147 words
A METALLIC VESSEL HAVING A STEEL OUTER SHELL, A PROTECTIVE METAL LINING DISPOSING WITHIN THE SHELL WITH ONE FACE THEREOF ADJACENT THE INNER SURFACE OF THE SHELL, SAID LINING BEING FORMED OF SEVERAL PLACES AND LAID WITH THE MARGINS THEREOF SPACED APART TO PROVIDE AN INTERVENING SLOT, MEANS COMPRISING WELDS OF PROTECTIVE METAL WITHIN SAID SLOT BETWEEN THE STEEL SHELL AND SAID MARGINS OF THE LINING CONNECTING THE LINING TO THE OUTER SHELL, SAID WELDS COVERING COMPLETELY THE SURFACE OF THE SHELL BETWEEN SAID MARGINS, A STRIP OF PROTECTIVE METAL DISPOSED AGAINST THE OTHER FACE OF THE LINING AND SPANNING SAID SLOT, AND CONTINUOUS WELDS OF PROTECTIVE METAL JOINING SAID STRIP TO THE SAID OTHER FACE OF THE LINING, SAID SHELL AND THE WELDS WITHIN SAID SLOT HAVING A TELLTALE HOLE EXTENDING THERETHROUGH AND THROUGH SAID WELDS AND COMMUNICATING DIRECTLY WITH THE SPACE IMMEDIATELY BENEATH SAID STRIP.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |