Patent US3923448A successfully refreshed from Google Patents.
US3923448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel mixing chamber for welding and cutting torches
Assignee: Individual
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Filing: 1974-10-15
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Granted: 1975-12-02
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Expires: 1994-10-15
Abstract
Abstract A gas mixing chamber incorporated in a welding, cutting or heating torch utilizing discontinuities in the gas flow paths to create drag and turbulence serving to promote the thorough mixing of the gases prior to combustion, thereby effecting more complete combustion of the fuel and producing a hotter flame.
Inventors
- 👤 Carl R Guth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:11
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/62; F23D14/64
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
227 words
A mixing chamber for a fuel burner comprising: a control fuel mixing element, an upstream outer shell for connection to handle means, a downstream adaptor for connection with a nozzle means, said fuel mixing element, upstream outer shell and downstream adaptor all having an opening extending therethrough for jointly defining a first gas passageway, coupling means for axially aligning said fuel mixing element, upstream outer shell and downstream adaptor and placing their openings in axial alignment, nozzle means having an outer diameter smaller than the opening of said mixing element and arranged therein, said nozzle means defining a gas expansion space between it and the inside periphery of said opening of said mixing element, and having a flared end at its downstream end for discharging a first gas therethrough, and means defining a second gas passageway extending through said fuel mixing element and into its hollow opening laterally of said nozzle means for discharging a second gas transmitted thereby laterally of said flared end of said nozzle means in the downstream direction of the movement of the first gas through said nozzle means, said flared end of said nozzle means retarding the movement of the second gas over the discharging end of said nozzle means into the stream of said first gas discharged by the nozzle means and creating eddies in the mixing first and second gases.
Claim 2
Dependent Claim
227 words
A mixing chamber for a fuel burner comprising: a control fuel mixing element, an upstream outer shell for connection to handle means, a downstream adaptor for connection with a nozzle means, said fuel mixing element, upstream outer shell and downstream adaptor all having an opening extending therethrough for jointly defining a first gas passageway, coupling means for axially aligning said fuel mixing element, upstream outer shell and downstream adaptor and placing their openings in axial alignment, nozzle means having an outer diameter smaller than the opening of said mixing element and arranged therein, said nozzle means defining a gas expansion space between it and the inside periphery of said opening of said mixing element, and having a flared end at its downstream end for discharging a first gas therethrough, and means defining a second gas passageway extending through said fuel mixing element and into its hollow opening laterally of said nozzle means for discharging a second gas transmitted thereby laterally of said flared end of said nozzle means in the downstream direction of the movement of the first gas through said nozzle means, said flared end of said nozzle means retarding the movement of the second gas over the discharging end of said nozzle means into the stream of said first gas discharged by the nozzle means and creating eddies in the mixing first and second gases.
Claim 3
Dependent Claim
36 words
The mixing chamber set forth in claim 1 wherein: said fuel mixing element has a torpedo shaped configuration with one conical end extending into said adaptor and the other conical end extending into said outer shell.
Claim 4
Dependent Claim
52 words
The mixing chamber set forth in claim 2 wherein: said coupling means extends between said adaptor and said outer shell and is adapted to draw said adaptor and outer sHell together thereby positioning one conical end of said mixing element in said adaptor and the other conical end in said outer shell.
Claim 5
Dependent Claim
50 words
The mixing chamber set forth in claim 3 wherein: said mixing element is provided with more than one duct extending through the conical surface of the upstream end of said mixing element and into said first gas passageway at a point upstream of said flared end of said nozzle means.
Claim 6
Dependent Claim
48 words
The mixing chamber set forth in claim 1 in further combination with: handle means for connection to said outer shell, said handle means including a pair of coaxial gas passageways one for connection with said first gas passageway and the second for connection with said second gas passageway.
Claim 7
Dependent Claim
36 words
The mixing chamber set forth in claim 4 in further combination with: an annular groove formed in the upstream end of said mixing element, and each duct extending from said annular groove through said mixing element.
Claim 8
Dependent Claim
47 words
The mixing chamber set forth in claim 6 in further combination with: handle means for connection to said outer shell, said handle means including a pair of coaxial gas passageways one for connection with said first gas passageway and the second for connection with said annular groove.
Claim 9
Dependent Claim
23 words
The mixing chamber set forth in claim 1 wherein: said nozzle means is necked down between its end to provide a venturi section.
Claim 10
Dependent Claim
23 words
The mixing chamber set forth in claim 4 wherein: said nozzle means is necked down between its end to provide a venturi section.
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) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |