Patent US3398345A successfully refreshed from Google Patents.
US3398345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual channel trigistor output stage motor speed and reversing control system
Assignee: Bendix Corp
•
Filing: 1965-09-30
•
Granted: 1968-08-20
•
Expires: 1985-09-30
Abstract
No abstract record available.
Inventors
- 👤 Robert L James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:50
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/28; H02P7/285; H02P7/29; H02P7/2913; Y; Y10; Y10S; Y10S388/00; Y10S388/90; Y10S388/901; Y10S388/907; Y10S388/917; Y10S388/921
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
215 words
FOR USE IN CONTROLLING A DIRECT CURRENT MOTOR OF A TYPE HAVING A LOAD WINDING FOR CONTROLLING THE DIRECTION AND SPEED OF ROTATION OF THE MOTOR; A FIRST SOURCE OF ELECTRICAL ENERGY HAVING AN ANODE AND A CATHODE, FIRST ELECTRICAL CONDUCTING MEANS FOR CONNECTING THE ANODE OF THE FIRST SOURCE TO ONE TERMINAL OF THE LOAD WINDING, A SECOND SOURCE OF ELECTRICAL ENERGY HAVING AN ANODE AND A CATHODE, SECOND ELECTRICAL CONDUCTING MEANS FOR CONNECTING THE CATHODE OF THE SECOND SOURCE TO SAID ONE TERMINAL OF THE LOAD WINDING, MEANS CONNECTING THE OTHER TERMINAL OF SAID LOAD WINDING TO THE CATHODE OF SAID FIRST SOURCE AND TO THE ANODE OF SAID SECOND SOURCE, SAID FIRST ELECTRICAL CONDUCTING MEANS INCLUDING A FIRST CONTROL MEANS OPERABLE IN A FIRST SENSE FOR OPENING AND IN A SECOND SENSE FOR CLOSING THE CONNECTION OF THE ANODE OF THE FIRST SOURCE TO THE ONE TERMINAL OF THE LOAD WINDING, A SECOND CONTROL MEANS OPERABLE IN A FIRST SENSE FOR OPENING AND IN A SECOND SENSE FOR CLOSING THE CONNECTION OF THE CATHODE OF THE SECOND SOURCE TO THE ONE TERMINAL OF THE LOAD WINDING, AND MEANS FOR SELECTIVELY OPERATING SAID FIRST AND SECOND CONTROL MEANS IN SAID FIRST AND SECOND SENSES FOR CONTROLLING THE DIRECTION OF ROTATION OF SAID MOTOR.
Claim 2
Dependent Claim
215 words
FOR USE IN CONTROLLING A DIRECT CURRENT MOTOR OF A TYPE HAVING A LOAD WINDING FOR CONTROLLING THE DIRECTION AND SPEED OF ROTATION OF THE MOTOR; A FIRST SOURCE OF ELECTRICAL ENERGY HAVING AN ANODE AND A CATHODE, FIRST ELECTRICAL CONDUCTING MEANS FOR CONNECTING THE ANODE OF THE FIRST SOURCE TO ONE TERMINAL OF THE LOAD WINDING, A SECOND SOURCE OF ELECTRICAL ENERGY HAVING AN ANODE AND A CATHODE, SECOND ELECTRICAL CONDUCTING MEANS FOR CONNECTING THE CATHODE OF THE SECOND SOURCE TO SAID ONE TERMINAL OF THE LOAD WINDING, MEANS CONNECTING THE OTHER TERMINAL OF SAID LOAD WINDING TO THE CATHODE OF SAID FIRST SOURCE AND TO THE ANODE OF SAID SECOND SOURCE, SAID FIRST ELECTRICAL CONDUCTING MEANS INCLUDING A FIRST CONTROL MEANS OPERABLE IN A FIRST SENSE FOR OPENING AND IN A SECOND SENSE FOR CLOSING THE CONNECTION OF THE ANODE OF THE FIRST SOURCE TO THE ONE TERMINAL OF THE LOAD WINDING, A SECOND CONTROL MEANS OPERABLE IN A FIRST SENSE FOR OPENING AND IN A SECOND SENSE FOR CLOSING THE CONNECTION OF THE CATHODE OF THE SECOND SOURCE TO THE ONE TERMINAL OF THE LOAD WINDING, AND MEANS FOR SELECTIVELY OPERATING SAID FIRST AND SECOND CONTROL MEANS IN SAID FIRST AND SECOND SENSES FOR CONTROLLING THE DIRECTION OF ROTATION OF SAID MOTOR.
References Cited (Backward Citations)
US2993160A
Cited
US3093776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |