US2626860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Backfire arrester
Assignee: Union Carbide Corp
•
Filing: 1949-07-21
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Granted: 1953-01-27
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Expires: 1969-07-21
Abstract
No abstract record available.
Inventors
- 👤 Charles J Dorf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:46
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/72; F23D14/82; A; A62; A62C; A62C4/00; A62C4/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
THE COMBINATION WITH A FUEL GAS PASSAGE, OF POROUS MATERIAL THEREIN OF A TYPE ADAPTED TO ASSIST IN QUENCHING A BACKFIRE FLAME, A SUPPLY PIPE LEADING TO SAID MATERIAL, AN OUTLET PIPE LEADING FROM SAID MATERIAL, A CONSTRICTION IN SAID OUTLET PIPE, AN ELONGATED LIQUID CONTAINER HAVING AN END CONNECTED WITH SAID OUTLET PIPE ON EACH
Claim 2
Dependent Claim
56 words
THE COMBINATION WITH A FUEL GAS PASSAGE, OF POROUS MATERIAL THEREIN OF A TYPE ADAPTED TO ASSIST IN QUENCHING A BACKFIRE FLAME, A SUPPLY PIPE LEADING TO SAID MATERIAL, AN OUTLET PIPE LEADING FROM SAID MATERIAL, A CONSTRICTION IN SAID OUTLET PIPE, AN ELONGATED LIQUID CONTAINER HAVING AN END CONNECTED WITH SAID OUTLET PIPE ON EACH
References Cited (Backward Citations)
DE557962C
Cited
US1170055A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-27 | 1956-07-28 | 1957-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-27 | 1960-07-28 | 1961-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-27 | 1964-07-28 | 1965-01-27 | $7700.00 | Window Closed / Lapsed |