US3143587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode regulator
Assignee: Crucible Steel Company of America
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Filing: 1959-11-30
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Granted: 1964-08-04
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Expires: 1979-11-30
Abstract
No abstract record available.
Inventors
- 👤 Russell C Buehl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:23
CPC Classifications
H; H05; H05B; H05B7/00; H05B7/02; H05B7/10; H05B7/109; H05B7/144; H05B7/148; H05B7/152; Y; Y02; Y02P; Y02P10/00; Y02P10/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
APPARATUS FOR CONTROLLING THE POSITION OF AN ELECTRODE TO EFFECT RAPID, EFFICIENT MELTING THEREOF, SAID ELECTRODE HAVING AN ELECTRICAL-CURRENT ARC STRUCK BETWEEN SAID ELECTRODE AND AN ELECTRICAL TERMINAL POSITIONED BELOW SAID ELECTRODE IN SUCH MANNER THAT PARTS OF SAID ELECTRODE BECOME MOLTEN AND FALL AS DROPLETS BETWEEN SAID ELECTRODE AND SAID TERMINAL AND CAUSE MOMENTARY SHORT CIRCUITS WHEN SAID ELECTRODE AND SAID TERMINAL ARE IN CLOSE PROXIMITY, SAID APPARATUS COMPRISING: DRIVE MEANS FOR LOWERING SAID ELECTRODE AT A PRESELECTED RATE OF SPEED; SENSING MEANS RESPONSIVE TO ARC VOLTAGE FOR DETERMINING WHETHER OR NOT SAID ELECTRODE AND SAID TERMINAL ARE IN SUCH CLOSE PROXIMITY THAT MOMENTARY SHORT CIRCUITS ARE OCCURRING, AND CONTROL MEANS CONNECTED TO SAID DRIVE MEANS, RESPONSIVE TO SAID SENSING MEANS, AND OPERABLE WHEN SAID MOMENTARY SHORT CIRCUITS ARE OCCURING TO DECREASE, FOR A PRESELECTED PERIOD OF TIME, THE AVERAGE RATE OF SPEED AT WHICH SAID DRIVE MEANS LOWERS SAID ELECTRODE.
Claim 2
Dependent Claim
152 words
APPARATUS FOR CONTROLLING THE POSITION OF AN ELECTRODE TO EFFECT RAPID, EFFICIENT MELTING THEREOF, SAID ELECTRODE HAVING AN ELECTRICAL-CURRENT ARC STRUCK BETWEEN SAID ELECTRODE AND AN ELECTRICAL TERMINAL POSITIONED BELOW SAID ELECTRODE IN SUCH MANNER THAT PARTS OF SAID ELECTRODE BECOME MOLTEN AND FALL AS DROPLETS BETWEEN SAID ELECTRODE AND SAID TERMINAL AND CAUSE MOMENTARY SHORT CIRCUITS WHEN SAID ELECTRODE AND SAID TERMINAL ARE IN CLOSE PROXIMITY, SAID APPARATUS COMPRISING: DRIVE MEANS FOR LOWERING SAID ELECTRODE AT A PRESELECTED RATE OF SPEED; SENSING MEANS RESPONSIVE TO ARC VOLTAGE FOR DETERMINING WHETHER OR NOT SAID ELECTRODE AND SAID TERMINAL ARE IN SUCH CLOSE PROXIMITY THAT MOMENTARY SHORT CIRCUITS ARE OCCURRING, AND CONTROL MEANS CONNECTED TO SAID DRIVE MEANS, RESPONSIVE TO SAID SENSING MEANS, AND OPERABLE WHEN SAID MOMENTARY SHORT CIRCUITS ARE OCCURING TO DECREASE, FOR A PRESELECTED PERIOD OF TIME, THE AVERAGE RATE OF SPEED AT WHICH SAID DRIVE MEANS LOWERS SAID ELECTRODE.
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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) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |