Patent US3247838A successfully refreshed from Google Patents.
US3247838A
Expired / Lapsed
US
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Fuel burner
Assignee: Whirlpool Corp
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Filing: 1964-02-24
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Granted: 1966-04-26
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Expires: 1984-02-24
Abstract
No abstract record available.
Inventors
- 👤 Harold L Frick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:55
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/02; F23D14/04; F23D14/10; F23D99/00; F23D99/002; F23D99/004; F23D2206/00; F23D2206/0094
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
129 words
A FUEL BURNER, COMPRISING: ELONGATED SUBSTANTIALLY FLAT FLANGE EXTENDER MEANS HAVING A PAIR OF OPPOSITE ENDS AND AN ESSENTIALLY SMOOTH SURFACE; PASSAGE MEANS FOR A GESEOUS FUEL MIXTURE; SPACES PORT MEANS ADJACENT ONE OF SAID ENDS COMMUNICATING WITH SAID PASSAGE MEANS HAVING EXITS SUBJACENT SAID SURFACE OPENING TOWARD THE OTHER OF SAID ENDS FOR PROJECTING FLAT FLANGE SEGMENTS OF AN OVER-ALL FLAME SHEET ADJACENT SAID SURFACE PRODUCING SUBSTANTIALLY SAID ENDS, SAID SMOOTH SURFACE PRODUCING SUBSTANTIALLY LAMINAR FLOW OF SAID MIXTURE ALONG SAID SURFACE; AND MEANS FORMING SPACED ELONGATED EMBOSSMENTS IN SAID SURFACE EACH HAVING ITS OPEN SIDE ADJACENT SAID SURFACE AND EXTENDING FROM ADJACENT SAID PORT MEANS TOWARD SAID OTHER OF SAID ENDS TO DIRECT SAID FUEL MIXTURE TOWARD SAID OTHER OF SAID ENDS BY WAY OF SAID EMBOSSMENTS.
References Cited (Backward Citations)
GB173593A
Cited
FR771705A
Cited
CH182332A
Cited
US2601299A
Cited
US2875820A
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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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |