US3204148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control for electromagnetic coupling
Assignee: Eaton Corp
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Filing: 1961-05-01
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Granted: 1965-08-31
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Expires: 1981-05-01
Abstract
No abstract record available.
Inventors
- 👤 Joseph N Urbanik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:28
CPC Classifications
H; H02; H02P; H02P29/00; H02P29/0016; H02P29/0027
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A FULL WAVE ELECTRICAL CONTROL FOR AN ELECTROMAGNETIC COUPLING APPARATUS HAVING A DRIVEN MEMBER, A DRIVING MEMBER, A ROTATING SHAFT AND A D.C. FIELD COIL, COMPRISING A FULL WAVE BRIDGE CIRCUIT INCLUDING A SOLID STATE CONTROLLED RECTIFIER, AN A.C. VOLTAGE SOURCE CONNECTED TO SAID BRIDGE CIRCUIT, CONDUCTORS CONNECTING SAID FIELD COIL IN SERIES WITH SAID SOLID STATE CONTROLLED RECTIFIER, MEANS RESPONSIVE TO ROTATION OF SAID SHAFT TO SUPPLY A D.C. POTENTIAL PROPORTIONAL TO THE ANGULAR VELOCITY OF SAID SHAFT, MEANS INCLUDING A VARIABLE RESISTANCE CIRCUIT RESPONSIVE TO SAID D.C. POTENTIAL, A PLURALITY OF GATE CIRCUITS EACH HAVING A COMMON PATH CONNECTED TO SAID RECTIFIER, SAID PATH CONNECTED TO SEPARATE TRIGGERING MEANS IN EACH GATE CIRCUIT FOR ALTERNATELY APPLYING GATE SIGNALS TO SAID RECTIFIER, A PHASE SHIFT CIRCUIT CONNECTED TO SAID GATE CIRCUITS AND SAID RESISTANT CIRCUITS MEANS, WHEREBY FULL WAVE RECTIFICATION AND ENERGIZATION OF SAID FIELD COIL IS RESPONSIVE TO ACTIVATION OF SAID RECTIFIER.
Claim 2
Dependent Claim
154 words
A FULL WAVE ELECTRICAL CONTROL FOR AN ELECTROMAGNETIC COUPLING APPARATUS HAVING A DRIVEN MEMBER, A DRIVING MEMBER, A ROTATING SHAFT AND A D.C. FIELD COIL, COMPRISING A FULL WAVE BRIDGE CIRCUIT INCLUDING A SOLID STATE CONTROLLED RECTIFIER, AN A.C. VOLTAGE SOURCE CONNECTED TO SAID BRIDGE CIRCUIT, CONDUCTORS CONNECTING SAID FIELD COIL IN SERIES WITH SAID SOLID STATE CONTROLLED RECTIFIER, MEANS RESPONSIVE TO ROTATION OF SAID SHAFT TO SUPPLY A D.C. POTENTIAL PROPORTIONAL TO THE ANGULAR VELOCITY OF SAID SHAFT, MEANS INCLUDING A VARIABLE RESISTANCE CIRCUIT RESPONSIVE TO SAID D.C. POTENTIAL, A PLURALITY OF GATE CIRCUITS EACH HAVING A COMMON PATH CONNECTED TO SAID RECTIFIER, SAID PATH CONNECTED TO SEPARATE TRIGGERING MEANS IN EACH GATE CIRCUIT FOR ALTERNATELY APPLYING GATE SIGNALS TO SAID RECTIFIER, A PHASE SHIFT CIRCUIT CONNECTED TO SAID GATE CIRCUITS AND SAID RESISTANT CIRCUITS MEANS, WHEREBY FULL WAVE RECTIFICATION AND ENERGIZATION OF SAID FIELD COIL IS RESPONSIVE TO ACTIVATION OF SAID RECTIFIER.
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) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |