Patent US2723908A successfully refreshed from Google Patents.
US2723908A
Expired / Lapsed
US
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Dry seal pressure type gas holder
Assignee: Individual
•
Filing: 1952-03-15
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Granted: 1955-11-15
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Expires: 1972-03-15
Abstract
No abstract record available.
Inventors
- 👤 John H Wiggins
- 👤 John W Allen
- 👤 Horner Frank Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:47
CPC Classifications
F; F17; F17B; F17B1/00; F17B1/02; F17B1/04; F17B1/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
104 words
IN A DRY SEAL PRESSURE TYPE GAS HOLDER, THE COMBINATION OF A CONTAINER HAVING A SIDE WALL, A VERTICALLY RECIPELEMENT THAT FORMS AT LEAST A PORTION OF THE SEALING MEANS FOR THE PISTON, AND TWO CYLINDRICAL SHAPED ABUTMENT SURFACES FOR SAID FABRIC ELEMENT ARRANGED IN CONCENTRIC RELATION WITH EACH OTHER AND WITH SAID FABRIC ELEMENT INTERPOSED BETWEEN THE SAME, SAID ABUTMENT SURFACES BEING SO DISPOSED THAT ONE OF SAID SURFACES BACKS UP SAID FABRIC ELEMENT DURING THE STROKE OF THE PISTON IN ONE DIRECTION AND THE OTHER ABUTMENT SURFACE BACKS UP SAID FABRIC ELEMENT DURING THE STROKE OF THE PISTON IN THE OPPOSITE DIREC-
References Cited (Backward Citations)
US2584953A
Cited
US2626859A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |