US3294953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plasma torch electrode and assembly
Assignee: Airco Inc
•
Filing: 1963-12-19
•
Granted: 1966-12-27
•
Expires: 1983-12-19
Abstract
No abstract record available.
Inventors
- 👤 Jr George R Spies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:27
CPC Classifications
H; H05; H05H; H05H1/00; H05H1/24; H05H1/26; H05H1/32; H05H1/34; H05H1/28; H05H1/3421; H05H1/3468
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
IN A PLASMA TORCH, AN ELECTRODE ASSEMBLY INCLUDING IN COMBINATION AN ELECTRODE MEMBER HAVING A FORWARD FACE, A NOZZLE MEMBER HAVING A REAR FACE ND A REAR ORIFICE IN THAT REAR FACE AND A FRONT ORIFICE WITH WHICH THROUGH THE NOZZLE MEMBER THE REAR ORIFICE COMMUNICATES, SAID FORWARD FACE COMPRISING A SUBSTANTIALLY FLAT ANNULAR PORTION, SAID FORWARD FACE HAVING A TRANSVERSE DIMENSION AT LEAST SLIGHTLY GREATER THAN THAT OF THE REAR ORIFICE AND OVERLYING THE REAR ORIFICE WITH ITS ANNULAR PORTION FORMING WITH THE REAR FACE A THIN ANNULAR APERTURE, THE DISTANCE BETWEEN SAID ELECTRODE FACE AND SAID REAR FACE BEING A MINIMUM AT SAID ANNULAR APERTURE DURING NORMAL OPERATION, AND MEANS FOR INTRODUCING THROUGH SAID ANNULAR APERTURE A SPIRAL FLOW OF GAS CONTRACTING
Claim 2
Dependent Claim
124 words
IN A PLASMA TORCH, AN ELECTRODE ASSEMBLY INCLUDING IN COMBINATION AN ELECTRODE MEMBER HAVING A FORWARD FACE, A NOZZLE MEMBER HAVING A REAR FACE ND A REAR ORIFICE IN THAT REAR FACE AND A FRONT ORIFICE WITH WHICH THROUGH THE NOZZLE MEMBER THE REAR ORIFICE COMMUNICATES, SAID FORWARD FACE COMPRISING A SUBSTANTIALLY FLAT ANNULAR PORTION, SAID FORWARD FACE HAVING A TRANSVERSE DIMENSION AT LEAST SLIGHTLY GREATER THAN THAT OF THE REAR ORIFICE AND OVERLYING THE REAR ORIFICE WITH ITS ANNULAR PORTION FORMING WITH THE REAR FACE A THIN ANNULAR APERTURE, THE DISTANCE BETWEEN SAID ELECTRODE FACE AND SAID REAR FACE BEING A MINIMUM AT SAID ANNULAR APERTURE DURING NORMAL OPERATION, AND MEANS FOR INTRODUCING THROUGH SAID ANNULAR APERTURE A SPIRAL FLOW OF GAS CONTRACTING
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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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |