Patent US3136937A successfully refreshed from Google Patents.
US3136937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed control of wound rotor induction motor
Assignee: John Inglis Co Ltd
•
Filing: 1962-01-29
•
Granted: 1964-06-09
•
Expires: 1982-01-29
Abstract
No abstract record available.
Inventors
- 👤 Miljanic Petar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:41
CPC Classifications
H; H02; H02P; H02P27/00; H02P27/04; H02P27/16; H02P1/00; H02P1/16; H02P1/26; H02P25/00; H02P25/02; H02P25/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
THE COMBINATION WITH A WOUND ROTOR INDUCTION MOTOR HAVING A STATOR FOR CONNECTION TO AN ALTERNATING CURRENT SUPPLY AND A WOUND ROTOR, MEANS CONNECTED TO SAID ROTOR FOR RECTIFYING THE ELECTRICAL OUTPUT OF SAID ROTOR, MEANS FOR INVERTING THE OUTPUT OF SAID RECTIFYING MEANS AND CONNECTING SAME TO THE MOTOR''S ALTERNATING CURRENT SUPPLY, GATE CONTROLLED PATH MEANS PROVIDING A BY-PASS FOR THE OUTPUT OF SAID RECTIFYING MEANS BY-PASSING SAID INVERTING MEANS, AND MEANS CONTROLLING THE GATE OF SAID GATE CONTROLLED PATH MEANS.
Claim 2
Dependent Claim
82 words
THE COMBINATION WITH A WOUND ROTOR INDUCTION MOTOR HAVING A STATOR FOR CONNECTION TO AN ALTERNATING CURRENT SUPPLY AND A WOUND ROTOR, MEANS CONNECTED TO SAID ROTOR FOR RECTIFYING THE ELECTRICAL OUTPUT OF SAID ROTOR, MEANS FOR INVERTING THE OUTPUT OF SAID RECTIFYING MEANS AND CONNECTING SAME TO THE MOTOR''S ALTERNATING CURRENT SUPPLY, GATE CONTROLLED PATH MEANS PROVIDING A BY-PASS FOR THE OUTPUT OF SAID RECTIFYING MEANS BY-PASSING SAID INVERTING MEANS, AND MEANS CONTROLLING THE GATE OF SAID GATE CONTROLLED PATH MEANS.
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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |