Patent US3773075A successfully refreshed from Google Patents.
US3773075A
Expired / Lapsed
US
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Fuel burner assemblies
Assignee: Airoil Burner Co Ltd
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Filing: 1971-11-24
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Granted: 1973-11-20
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Expires: 1991-11-24
Abstract
Abstract A fuel burner assembly of the venturi type having its fuel nozzle provided with a plurality of jets and being more forwardly disposed in relation to the venturi than is conventional in order to reduce operating noise.
Inventors
- 👤 M Thompson
- 👤 R Pearce
- 👤 D Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:46
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/62; F23D14/64; F23D14/02; F23D14/04; F23D99/00; F23D99/002; F23D99/004; F23D2206/00; F23D2206/0094; F23D2210/00; F23D2900/00; F23D2900/00011; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87571; Y10T137/87587; Y10T137/87603
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
93 words
A burner assembly composed of a venturi and a fuel nozzle arranged to discharge fuel into said venturi so that air will be inspirated into the venturi, wherein the nozzle has a plurality of jets through which said fuel is passed, the the distance between the fuel-emitting end of the nozzle and the center of the venturi throat is within the range of 0.5 to 1.5 venturi throat diameters, and the inlet portion of the venturi facing the nozzle is formed as a hollow member with an acoustic absorbing material within the member.
Claim 2
Dependent Claim
93 words
A burner assembly composed of a venturi and a fuel nozzle arranged to discharge fuel into said venturi so that air will be inspirated into the venturi, wherein the nozzle has a plurality of jets through which said fuel is passed, the the distance between the fuel-emitting end of the nozzle and the center of the venturi throat is within the range of 0.5 to 1.5 venturi throat diameters, and the inlet portion of the venturi facing the nozzle is formed as a hollow member with an acoustic absorbing material within the member.
Claim 3
Dependent Claim
19 words
An assembly according to claim 1, wherein the inner wall of the inlet portion of the venturi is perforated.
References Cited (Backward Citations)
US501164A
Cited
US514631A
Cited
US1102751A
Cited
US1395139A
Cited
US1809425A
Cited
US1838903A
Cited
US1878478A
Cited
US1980321A
Cited
US2942683A
Cited
US2964121A
Cited
US3044537A
Cited
US3659962A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |