Patent US3568934A successfully refreshed from Google Patents.
US3568934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas ring for fuel burner
Assignee: Peabody Engineering Corp
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Filing: 1969-02-10
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Granted: 1971-03-09
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Expires: 1989-02-10
Abstract
Abstract A gas ring for fuel burners having a burner throat, the ring having an inside diameter substantially the same as that of the throat and having a peripherally spaced set of elongated nozzles or fingers extending radially (inward) from the ring. The fingers have discharge openings in at least one side and are oriented to discharge gas well within the air stream in said burner throat at various angular positions to which they may be adjusted. Such fingers may be used alone or in conjunction with conventional gas exit orifices spaced around the inner periphery of the ring.
Inventors
- 👤 John Dunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:10
CPC Classifications
F; F23; F23D; F23D17/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
163 words
A fuel burner comprising a burner tube through which a stream of air for combustion flows, a gas ring having its inner periphery disposed in registration with and forming a portion of said burner tube and having peripherally spaced openings communicating with the interior of said burner tube and adapted to introduce fuel gas directly into said airstream in said tube, and a set of tubular fingers carried by said gas ring with their outer ends communicating with at least some of said gas ring openings and with their inner ends extending inwardly into the airstream in said burner tube, said fingers having side openings spaced inwardly of said burner tube and disposed to discharge gas from said gas ring directly into the airstream in said tube for mixing therewith, the sides of said tubular fingers opposite said side openings being disposed to form shields to prevent said airstream from interfering with the discharge of gas from said side openings into the airstream.
Claim 2
Dependent Claim
163 words
A fuel burner comprising a burner tube through which a stream of air for combustion flows, a gas ring having its inner periphery disposed in registration with and forming a portion of said burner tube and having peripherally spaced openings communicating with the interior of said burner tube and adapted to introduce fuel gas directly into said airstream in said tube, and a set of tubular fingers carried by said gas ring with their outer ends communicating with at least some of said gas ring openings and with their inner ends extending inwardly into the airstream in said burner tube, said fingers having side openings spaced inwardly of said burner tube and disposed to discharge gas from said gas ring directly into the airstream in said tube for mixing therewith, the sides of said tubular fingers opposite said side openings being disposed to form shields to prevent said airstream from interfering with the discharge of gas from said side openings into the airstream.
Claim 3
Dependent Claim
47 words
A fuel burner as set forth in claim 1 in which said fingers are in communication with certain of said discharge openings and others of said discharge openings are disposed to introduce gas from said ring directly into said airstream at the inner periphery of said ring.
Claim 4
Dependent Claim
44 words
A fuel burner as set forth in claim 1 in which said fingers each comprise a pair of telescoping members at least one of which has a side opening in a position to be varied in accordance with the telescoping position of said members.
Claim 5
Dependent Claim
20 words
A fuel burner as set forth in claim 3 in which side openings are formed in both of said members.
Claim 6
Dependent Claim
22 words
A fuel burner as set forth in claim 1 in which said fingers are in communication with each of said discharge openings.
Claim 7
Dependent Claim
48 words
A fuel burner as set forth in claim 1 in which a circle tangent to the inward ends of said fingers and concentric with the central opening of said gas ring has a diameter varying between 60 percent and 80 percent of the diameter of said central opening.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |