US3304774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric arc torch
Assignee: Victor Equipment Co
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Filing: 1964-07-27
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Granted: 1967-02-21
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Expires: 1984-07-27
Abstract
No abstract record available.
Inventors
- 👤 John W Poole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:18
CPC Classifications
H; H05; H05H; H05H1/00; H05H1/24; H05H1/26; H05H1/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
THE METHOD OF OPERATING A PLASMA FORMING ELECTRIC ARC TORCH WITH AN ARC TERMINUS EXTERNAL TO SAID TORCH COMPRISING ESTABLISHING AN ELECTRIC ARC IN SAID TORCH; STABLIZING SAID ARC WITH A GAS TO CREATE A HEATED AND AT LEAST PARTIALLY IONIZED GASEOUS EFFLUENT; IMPINGING SAID EFFLUENT UPON AN OBJECT TO CREATE A SHOCK WAVE; TRANSFERRING SAID ARC TO SAID SHOCK WAVE, AND EMPLOYING SAID SHOCK WAVE AS A CONDUCTOR TO COMPLETE THE ELECTRICAL CIRCUIT FOR SAID ARC.
Claim 2
Independent Claim
77 words
THE METHOD OF OPERATING A PLASMA FORMING ELECTRIC ARC TORCH WITH AN ARC TERMINUS EXTERNAL TO SAID TORCH COMPRISING ESTABLISHING AN ELECTRIC ARC IN SAID TORCH; STABLIZING SAID ARC WITH A GAS TO CREATE A HEATED AND AT LEAST PARTIALLY IONIZED GASEOUS EFFLUENT; IMPINGING SAID EFFLUENT UPON AN OBJECT TO CREATE A SHOCK WAVE; TRANSFERRING SAID ARC TO SAID SHOCK WAVE, AND EMPLOYING SAID SHOCK WAVE AS A CONDUCTOR TO COMPLETE THE ELECTRICAL CIRCUIT FOR SAID ARC.
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |