US3934818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of oxy-fuel cutting
Assignee: ESAB AB
•
Filing: 1972-12-20
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Granted: 1976-01-27
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Expires: 1992-12-20
Abstract
Abstract Method of oxy-fuel cutting of thin plate the improvement of which comprises surrounding the cutting flame with an admixture of air and water.
Inventors
- 👤 Cornelius Seamans Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:40
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/72; F23D14/78; F23D14/38; F23D14/42; Y; Y02; Y02E; Y02E20/00; Y02E20/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
In a method of oxy-fuel gas cutting of relatively thin steel plate wherein a high temperature cutting flame is directed at a portion of said plate to be cut, the improvement of which comprises: passing a stream of air into a mixing zone adjacent said nozzle at a rate of between 75 to 100 cu.ft/hr at 15 to 25 psig; passing a stream of water into said mixing zone at a rate of between 10 to 15 gal. per hr; discharging the admixture of said water and air from said mixing zone to form an atomized aerosol mist; and directing said mist in the form of a curtain about said cutting flame and as close as possible thereto without causing physical interference therewith.
Claim 2
Dependent Claim
123 words
In a method of oxy-fuel gas cutting of relatively thin steel plate wherein a high temperature cutting flame is directed at a portion of said plate to be cut, the improvement of which comprises: passing a stream of air into a mixing zone adjacent said nozzle at a rate of between 75 to 100 cu.ft/hr at 15 to 25 psig; passing a stream of water into said mixing zone at a rate of between 10 to 15 gal. per hr; discharging the admixture of said water and air from said mixing zone to form an atomized aerosol mist; and directing said mist in the form of a curtain about said cutting flame and as close as possible thereto without causing physical interference therewith.
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) | 1979-01-26 | 1979-07-28 | 1980-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-26 | 1983-07-28 | 1984-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-26 | 1987-07-28 | 1988-01-27 | $7700.00 | Window Closed / Lapsed |