US3217133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plasma torch
Assignee: Compagnie de Saint Gobain SA
•
Filing: 1963-02-14
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Granted: 1965-11-09
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Expires: 1983-02-14
Abstract
No abstract record available.
Inventors
- 👤 Mattmuller Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:18
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/16; B05B7/22; B05B7/222; B05B7/226; H; H05; H05H; H05H1/00; H05H1/24; H05H1/26; H05H1/28; H05H1/32; H05H1/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A PLASMA TORCH INCLUDING A CONICAL ELECTRODE PROVIDED WITH A NOZZLE, A COOPERATING ELECTRODE IN OPERATIVE ASSOCIATION THEREWITH, MEANS TO PASS AN ELECTRIC ARC THEREBETWEEN, A FIRST COOLING CHAMBER ABOUT THE CONICAL ELECTRODE, A SECOND COOLING CHAMBER EXTENDING ABOUT THE COOPERATING ELECTRODE TO THE NOZZLE, CONDUIT MEANS CONNECTING THE COOLING CHAMBERS, AN EXPANSION VALVE OPENING INTO THE FIRST COOLING CHAMBER, AND MEANS TO FLOW AN EXPANSIBLE FLUID THROUGH THE EXPANSION VALVE INTO CONTACT WITH THE FIRST ELECTRODE, INTO THE SECOND COOLING CHAMBER AND INTO CONTACT WITH THE SECOND ELECTRODE, BETWEEN THE ELECTRODES, AND OUT THROUGH THE NOZZLE.
Claim 2
Dependent Claim
97 words
A PLASMA TORCH INCLUDING A CONICAL ELECTRODE PROVIDED WITH A NOZZLE, A COOPERATING ELECTRODE IN OPERATIVE ASSOCIATION THEREWITH, MEANS TO PASS AN ELECTRIC ARC THEREBETWEEN, A FIRST COOLING CHAMBER ABOUT THE CONICAL ELECTRODE, A SECOND COOLING CHAMBER EXTENDING ABOUT THE COOPERATING ELECTRODE TO THE NOZZLE, CONDUIT MEANS CONNECTING THE COOLING CHAMBERS, AN EXPANSION VALVE OPENING INTO THE FIRST COOLING CHAMBER, AND MEANS TO FLOW AN EXPANSIBLE FLUID THROUGH THE EXPANSION VALVE INTO CONTACT WITH THE FIRST ELECTRODE, INTO THE SECOND COOLING CHAMBER AND INTO CONTACT WITH THE SECOND ELECTRODE, BETWEEN THE ELECTRODES, AND OUT THROUGH THE NOZZLE.
References Cited (Backward Citations)
US2870320A
Cited
US3016447A
Cited
US2906854A
Cited
US2951143A
Cited
US3042830A
Cited
US3148263A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |