Patent US3130295A successfully refreshed from Google Patents.
US3130295A
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US
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Electric arc working process and apparatus
Assignee: Union Carbide Corp
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Filing: 1961-07-19
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Granted: 1964-04-21
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Expires: 1981-07-19
Abstract
No abstract record available.
Inventors
- 👤 August F Manz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:57
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/12; B23K9/124; B23K9/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN AN ARC WORKING SYSTEM REQUIRING DIFFERENT VOLTAMPERE CONDITIONS THEREFOR, AN A.C. ENERGIZED POWER SUPPLY CIRCUIT FOR ENERGIZING THE ARC WITH A PLURALITY OF PRESELECTED VOLT-AMPERE CONDITIONS AND A RELAY-SWITCHING CIRCUIT FOR SELECTIVELY OPERATING SAID A.C. ENERGIZED POWER SUPPLY CIRCUIT TO PRODUCE ANY ONE OF SUCH CONDITIONS, SAID POWER SUPPLY CIRCUIT COMPRISING AN A.C. ENERGIZED COIL PROVIDED WITH A PLURALITY OF TAPS WHICH ARE ADJUSTABLE FOR SETTING SUCH CONDITIONS, MEANS FOR INDIVIDUALLY ADJUSTING SAID TAPS WITH RESPECT TO SUCH COIL, AND MEANS FOR ADJUSTING SAID TAPS SIMULTANEOUSLY WITH RESPECT TO SAID COIL
Claim 2
Dependent Claim
92 words
IN AN ARC WORKING SYSTEM REQUIRING DIFFERENT VOLTAMPERE CONDITIONS THEREFOR, AN A.C. ENERGIZED POWER SUPPLY CIRCUIT FOR ENERGIZING THE ARC WITH A PLURALITY OF PRESELECTED VOLT-AMPERE CONDITIONS AND A RELAY-SWITCHING CIRCUIT FOR SELECTIVELY OPERATING SAID A.C. ENERGIZED POWER SUPPLY CIRCUIT TO PRODUCE ANY ONE OF SUCH CONDITIONS, SAID POWER SUPPLY CIRCUIT COMPRISING AN A.C. ENERGIZED COIL PROVIDED WITH A PLURALITY OF TAPS WHICH ARE ADJUSTABLE FOR SETTING SUCH CONDITIONS, MEANS FOR INDIVIDUALLY ADJUSTING SAID TAPS WITH RESPECT TO SUCH COIL, AND MEANS FOR ADJUSTING SAID TAPS SIMULTANEOUSLY WITH RESPECT TO SAID COIL
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) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |