Patent US3782883A successfully refreshed from Google Patents.
US3782883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flat flame burner having a low air to gas ratio
Assignee: Surface Combustion Corp
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Filing: 1972-04-20
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Granted: 1974-01-01
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Expires: 1992-04-20
Abstract
Abstract A flat flame burner capable of sustaining combustion at a low air to gas ratio. The burner has a cup shaped combustion chamber with outwardly extending tapered walls leading from the combustion chamber. At the upstream end of the combustion chamber, generally tangential means is provided for introducing a mixture of gas into the combustion chamber. The geometry of the burner is such that virtually total reaction takes place within the combustion chamber and along the tapered walls.
Inventors
- 👤 F Vereecke
- 👤 J Nesbitt
- 👤 K Hemsath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:00
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/12; F23D14/125
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
131 words
A flat flame burner comprising: a housing, an opening within said housing defining a cup shaped combustion chamber, a pair of dual diameter ports extending through the housing to the interior portion of the wall of said chamber in a generally tangential manner, a member secured to the housing and having a generally conically-shaped interior in a confluent relationship with said chamber, said member having its smaller diameter end adjacent to and larger than the diameter of said chamber to define a shoulder, each of said ports having a first portion adjacent said chamber and a second portion adjacent and upstream of said first portion, said second portion having a larger diameter than said first portion, and means for supplying combustion gas and air to said ports in a coaxial direction.
Claim 2
Dependent Claim
131 words
A flat flame burner comprising: a housing, an opening within said housing defining a cup shaped combustion chamber, a pair of dual diameter ports extending through the housing to the interior portion of the wall of said chamber in a generally tangential manner, a member secured to the housing and having a generally conically-shaped interior in a confluent relationship with said chamber, said member having its smaller diameter end adjacent to and larger than the diameter of said chamber to define a shoulder, each of said ports having a first portion adjacent said chamber and a second portion adjacent and upstream of said first portion, said second portion having a larger diameter than said first portion, and means for supplying combustion gas and air to said ports in a coaxial direction.
Claim 3
Dependent Claim
23 words
The burner of claim 1 wherein each of said ports is positioned at a 2*-4* angle relative to the tangential of said chamber.
Claim 4
Dependent Claim
26 words
The burner of claim 1 wherein said second portion of each port has a diameter approximately twice as large as the diameter of said first portion.
Claim 5
Dependent Claim
20 words
The burner of claim 3 wherein the length of said second portion is twice the length of said first portion.
Claim 6
Dependent Claim
121 words
A flat flame burner comprising: a housing, a cup shaped opening within said housing defining a chamber, a member secured to the housing and having a recessed interior in the form of a right cylindrical portion having tapered walls extending from said cylindrical portion, said cylindrical portion being adjacent said chamber, a plurality of ports extending through the housing into said chamber in a generally tangential manner, each of said ports having a first portion adjacent said opening with a first diameter and a second portion adjacent and upstream of said first portion with a second diameter larger than said first diameter, means for providing air and gas to said second portion of each of said ports in a coaxial direction.
Claim 7
Dependent Claim
121 words
A flat flame burner comprising: a housing, a cup shaped opening within said housing defining a chamber, a member secured to the housing and having a recessed interior in the form of a right cylindrical portion having tapered walls extending from said cylindrical portion, said cylindrical portion being adjacent said chamber, a plurality of ports extending through the housing into said chamber in a generally tangential manner, each of said ports having a first portion adjacent said opening with a first diameter and a second portion adjacent and upstream of said first portion with a second diameter larger than said first diameter, means for providing air and gas to said second portion of each of said ports in a coaxial direction.
Claim 8
Dependent Claim
24 words
The burner of claim 5 wherein the length of said second portion is approximately twice as long as the length of said first portion.
Claim 9
Dependent Claim
35 words
The burner of claim 5 wherein said gas supply means is a longitudinally extending tube received within the second portion of said port with the terminating end of said gas tube having an opening therein.
Claim 10
Dependent Claim
28 words
The burner of claim 5 wherein the diameter of said right cylindrical portion is larger than the diameter of said cup shaped opening thereby defining a transverse shoulder.
Claim 11
Dependent Claim
40 words
The burner of claim 7 wherein the distance from where the tube terminates within said second portion to the beginning of said first portion is between 5 to 10 times greater than the diameter of said opening in said tube.
Claim 12
Dependent Claim
18 words
The burner of claim 9 wherein said distance is 7.5 times greater than the diameter of said opening.
Claim 13
Dependent Claim
22 words
The burner of claim 5 wherein the diameter of said right cylindrical portion is 2/1 to 5/1 times greater than its length.
Claim 14
Dependent Claim
25 words
The burner of claim 8 wherein the diameter of said right cylindrical portion is 6/5 to 2/1 times greater than the diameter of said opening.
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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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |