US3255291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamic control apparatus for electric arc furnaces and the like
Assignee: Individual
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Filing: 1965-01-21
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Granted: 1966-06-07
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Expires: 1985-01-21
Abstract
No abstract record available.
Inventors
- 👤 Charles F Weisgerber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:47
CPC Classifications
H; H05; H05B; H05B7/00; H05B7/02; H05B7/10; H05B7/109
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A DYNAMIC CONTROL APPARATUS FOR INFINITELY VARIABLE POSITIONING OF AN ELECTRODE IN AN ELECTRICAL FURNACE AND THE LIKE AND RESPONSIVE TO ELECTRICAL CONDITIONS ASSOCIATED WITH SAID ELECTRODE, AND INCLUDING, A CONDITION SENSING MEANS COMPRISING A DETECTION CIRCUIT FOR GENERATING A SIGNAL PROPORTIONATE TO THE DIFFERENCE BETWEEN THE VOLTAGE AND AMPERAGE CONDITION AT SAID ELECTRODE, AND AN ELECTROMECHANICAL ACTUATOR COMPRISING MEANS FOR GENERATING A MAGNETIC FIELD AND AN ARMATURE WITH A SINGLE WINDING AND MOVABLE RELATIVE TO SAID FIELD AND COUPLED DIRECTLY TO AN ELEMENT CONTROLLING THE POSITION OF SAID ELECTRODE, MEANS NORMALLY CENTERING THE ARMATURE AT A NULL POSITION WITH RESPECT TO THE SAID FIELD, SAID ARMATURE WINDING BEING SUPPLIED WITH A SIGNAL FROM SAID SENSING MEANS TO SHIFT THE ARMATURE PROPORTIONALLY IN OPPOSITE DIRECTIONS FROM THE NULL POSITION AS A FUNCTION OF SAID SINGNAL TO VARIABLY MOVE AND CONTROLLABLY POSITION THE SAID ELEMENT FOR VARIABLY POSITIONING THE ELECTRODE.
Claim 2
Dependent Claim
149 words
A DYNAMIC CONTROL APPARATUS FOR INFINITELY VARIABLE POSITIONING OF AN ELECTRODE IN AN ELECTRICAL FURNACE AND THE LIKE AND RESPONSIVE TO ELECTRICAL CONDITIONS ASSOCIATED WITH SAID ELECTRODE, AND INCLUDING, A CONDITION SENSING MEANS COMPRISING A DETECTION CIRCUIT FOR GENERATING A SIGNAL PROPORTIONATE TO THE DIFFERENCE BETWEEN THE VOLTAGE AND AMPERAGE CONDITION AT SAID ELECTRODE, AND AN ELECTROMECHANICAL ACTUATOR COMPRISING MEANS FOR GENERATING A MAGNETIC FIELD AND AN ARMATURE WITH A SINGLE WINDING AND MOVABLE RELATIVE TO SAID FIELD AND COUPLED DIRECTLY TO AN ELEMENT CONTROLLING THE POSITION OF SAID ELECTRODE, MEANS NORMALLY CENTERING THE ARMATURE AT A NULL POSITION WITH RESPECT TO THE SAID FIELD, SAID ARMATURE WINDING BEING SUPPLIED WITH A SIGNAL FROM SAID SENSING MEANS TO SHIFT THE ARMATURE PROPORTIONALLY IN OPPOSITE DIRECTIONS FROM THE NULL POSITION AS A FUNCTION OF SAID SINGNAL TO VARIABLY MOVE AND CONTROLLABLY POSITION THE SAID ELEMENT FOR VARIABLY POSITIONING THE ELECTRODE.
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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |