US3335259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamic characteristic control for direct current arcs and apparatus therefor
Assignee: Miller Electric Manufacturing Co
•
Filing: 1960-09-30
•
Granted: 1967-08-08
•
Expires: 1980-09-30
Abstract
No abstract record available.
Inventors
- 👤 Allan C Mulder
- 👤 Reidar P C Rasmusen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:08
CPC Classifications
H; H01; H01F; H01F29/00; H01F29/06; B; B23; B23K; B23K9/00; B23K9/10; B23K9/1006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN AN ARC WELDING CURRENT SOURCE, AN ADJUSTABLE A.C. VOLTAGE SOURCE AND AN OUTPUT RECTIFIER FOR SUPPLYING D.C. CURRENT TO AN ARC, SAID SOURCE BEING ADJUSTED TO COARSELY ESTABLISH A STABLE ARC CHARACTERISTIC, AND INDUTIVE REACTANCE CONNECTED IN THE OUTPUT CIRCUIT OF THE ADJUSTABLE A.C. VOLTAGE SOURCE AND THE INPUT CIRCUIT OF THE RECTIFIER AND HAVING A LOW IMPEDANCE SUCH THAT CONNECTION THEREOF WILL NOT EFFECTIVELY VARY THE AMPLITUDE OF THE OUTPUT CURRENT OF THE RECTIFIER, AND MEANS TO VARY THE IMPEDANCE OF THE REACTANCE MEANS IN RELATIVELY SMALL INCREMENTS TO FURTHER ADJUST THE DYNAMIC CHARACTERISTIC OF THE ARC.
Claim 2
Dependent Claim
99 words
IN AN ARC WELDING CURRENT SOURCE, AN ADJUSTABLE A.C. VOLTAGE SOURCE AND AN OUTPUT RECTIFIER FOR SUPPLYING D.C. CURRENT TO AN ARC, SAID SOURCE BEING ADJUSTED TO COARSELY ESTABLISH A STABLE ARC CHARACTERISTIC, AND INDUTIVE REACTANCE CONNECTED IN THE OUTPUT CIRCUIT OF THE ADJUSTABLE A.C. VOLTAGE SOURCE AND THE INPUT CIRCUIT OF THE RECTIFIER AND HAVING A LOW IMPEDANCE SUCH THAT CONNECTION THEREOF WILL NOT EFFECTIVELY VARY THE AMPLITUDE OF THE OUTPUT CURRENT OF THE RECTIFIER, AND MEANS TO VARY THE IMPEDANCE OF THE REACTANCE MEANS IN RELATIVELY SMALL INCREMENTS TO FURTHER ADJUST THE DYNAMIC CHARACTERISTIC OF THE ARC.
References Cited (Backward Citations)
DE943843C
Cited
US2463105A
Cited
US2891210A
Cited
US2757296A
Cited
US2882478A
Cited
US2859398A
Cited
US2909647A
Cited
US3016484A
Cited
US3054884A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |