Patent US4566839A successfully refreshed from Google Patents.
US3148263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plasma-jet torch apparatus and method relating to increasing the life of the downstream electrode
Assignee: Avco Corp
•
Filing: 1961-08-02
•
Granted: 1964-09-08
•
Expires: 1981-08-02
Abstract
No abstract record available.
Inventors
- 👤 Gerald A Jensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:11
CPC Classifications
H; H05; H05H; H05H1/00; H05H1/24; H05H1/26; H05H1/32; H05H1/42; B; B05; B05B; B05B7/00; B05B7/16; B05B7/22; B05B7/222; B05B7/226; H05H1/34; H05H1/3405
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
IN COMBINATION WITH AN ELECTRICAL PLASMA-JET TORCH HAVING AN UPSTREAM ELECTRODE, A DOWNSTREAM ELECTRODE HAVING A BORE SUBSTANTIALLY COAXIAL WITH SAID UPSTREAM ELECTRODE FOR RECEIVING A FLUID HAVING A BOUNDARY LAYER AND MEANS FOR BLEEDING SAID BOUNDARY LAYER.
Claim 2
Dependent Claim
38 words
IN COMBINATION WITH AN ELECTRICAL PLASMA-JET TORCH HAVING AN UPSTREAM ELECTRODE, A DOWNSTREAM ELECTRODE HAVING A BORE SUBSTANTIALLY COAXIAL WITH SAID UPSTREAM ELECTRODE FOR RECEIVING A FLUID HAVING A BOUNDARY LAYER AND MEANS FOR BLEEDING SAID BOUNDARY LAYER.
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) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |