US4036324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noise reduction
Assignee: Foseco International Ltd
•
Filing: 1975-07-30
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Granted: 1977-07-19
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Expires: 1995-07-30
Abstract
Abstract The noise from gas and oil burners can be reduced by using a burner quarl comprising a ceramic tube which is permeable or which has at least one permeable zone along its length, and which is surrounded along the permeable part by parts of the length of the tube by at least one sound absorbing chamber.
Inventors
- 👤 Colin Washbourne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:08
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/36; F23M; F23M20/00; F23M20/005; F23D2210/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
49 words
A fluid fuel burner assembly comprising a burner, and a burner quarl consisting essentially of a substantially non-porous ceramic material tube having substantially radial vents along its length, the ceramic material tube being surrounded along at least part of its length by at least one sound absorbing chamber, and
Claim 2
Dependent Claim
49 words
A fluid fuel burner assembly comprising a burner, and a burner quarl consisting essentially of a substantially non-porous ceramic material tube having substantially radial vents along its length, the ceramic material tube being surrounded along at least part of its length by at least one sound absorbing chamber, and
Claim 3
Dependent Claim
25 words
wherein the outside of the sound absorbing chamber comprises a surrounding wall of sealed ceramic material connected to the ceramic tube by two radial flanges.
Claim 4
Dependent Claim
25 words
wherein the outside of the sound absorbing chamber comprises a surrounding wall of sealed ceramic material connected to the ceramic tube by two radial flanges.
Claim 5
Dependent Claim
18 words
The burner of claim 1 wherein the sound absorbing chamber is filled with a loose refractory fibre blanket.
Claim 6
Dependent Claim
18 words
The burner of claim 1, wherein the sound absorbing chamber is filled with a fibrous reticular ceramic material.
References Cited (Backward Citations)
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Cited
US1968456A
Cited
US2583366A
Cited
US3159237A
Cited
US3192986A
Cited
US3638756A
Cited
US3620329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-18 | 1981-01-17 | 1981-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-18 | 1985-01-17 | 1985-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-18 | 1989-01-17 | 1989-07-19 | $7700.00 | Window Closed / Lapsed |