US3773075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel burner assemblies
Assignee: Airoil Burner Co Ltd
•
Filing: 1971-11-24
•
Granted: 1973-11-20
•
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 16:35
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.
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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) | 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 |