US3176209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed control circuit for d.c. motor
Assignee: Liberty National Bank and Trust Co
•
Filing: 1963-01-04
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Granted: 1965-03-30
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Expires: 1983-01-04
Abstract
No abstract record available.
Inventors
- 👤 Triest J Cappello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:01
CPC Classifications
H; H02; H02P; H02P29/00; H02P29/40; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/913
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
AN ELECTRICAL CONTROL CIRCUIT FOR CONTROLLABLY ENERGIZING A LOAD SUCH AS AN ELECTRIC MOTOR OR THE LIKE COMPRISING: (A) A TRIGGERABLE RECTIFYING DEVICE, (B) MEANS CONNECTING SAID DEVICE IN SERIES WITH THE LOAD ACROSS AN ALTERNATING CURRENT SOURCE, (C) A SATURABLE REACTOR FOR TRIGGERING SAID DEVICE, (D) SAID REACTOR HAVING A MAIN WINDING AND PLURAL CONTROL WINDINGS, (E) AND A UNI-DIRECTIONAL CURRENT DEVICE, (F) ONE OF SAID CONTROL WINDINGS BEING CONNECTED ACROSS THE CURRENT SOURCE IN SERIES WITH SAID MAIN WINDING AND SAID UNI-DIRECTIONAL CURRENT DEVICE,
Claim 2
Dependent Claim
86 words
AN ELECTRICAL CONTROL CIRCUIT FOR CONTROLLABLY ENERGIZING A LOAD SUCH AS AN ELECTRIC MOTOR OR THE LIKE COMPRISING: (A) A TRIGGERABLE RECTIFYING DEVICE, (B) MEANS CONNECTING SAID DEVICE IN SERIES WITH THE LOAD ACROSS AN ALTERNATING CURRENT SOURCE, (C) A SATURABLE REACTOR FOR TRIGGERING SAID DEVICE, (D) SAID REACTOR HAVING A MAIN WINDING AND PLURAL CONTROL WINDINGS, (E) AND A UNI-DIRECTIONAL CURRENT DEVICE, (F) ONE OF SAID CONTROL WINDINGS BEING CONNECTED ACROSS THE CURRENT SOURCE IN SERIES WITH SAID MAIN WINDING AND SAID UNI-DIRECTIONAL CURRENT DEVICE,
References Cited (Backward Citations)
US2734160A
Cited
US2998547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |