Patent US3412272A successfully refreshed from Google Patents.
US3412272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-starting synchronous reaction motor
Assignee: Amphenol Corp
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Filing: 1966-05-17
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Granted: 1968-11-19
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Expires: 1986-05-17
Abstract
No abstract record available.
Inventors
- 👤 Kohlhagen Walter
- 👤 Harold K Cummings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:33
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/10; H02K7/118
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
IN A SYNCHRONOUS REACTION MOTOR, THE COMBINATION WITH A FIELD INCLUDING FIELD POLES ARRANGED CIRCULARLY ABOUT A FIRST AXIS, A COIL ACTING WHEN ENERGIZED TO EXCITE SAID FIELD, A SHAFT PART JOURNALLED FOR ROTATION ABOUT SAID AXIS, AND A PERMANENT-MAGNET ROTOR PART TURNABLE ON SAID SHAFT PART AND HAVING POLES OF OPPOSITE POLARITIES COOPERATING WITH SAID FIELD POLES, OF A DEVICE PROVIDING FOR FREE RELATIVE ROTARY MOTION BETWEEN SAID PARTS OVER A GIVEN ANGULAR RANGE; AND A RESILIENT COUPLING BETWEEN SAID PARTS PROVIDING A HELICAL SPRING CARRIED BY ONE OF SAID PARTS WITH ITS AXIS SPACED FROM AND PARALLEL TO SAID FIRST AXIS AND HAVING A FREE LENGTH TO ONE END THEREOF, AND SPACED SHOULDERS ON THE OTHER PART BETWEEN WHICH SAID SPRING LENGTH EXTENDS AND BY WHICH IT IS DEFLECTED TRANSVERSELY OF SAID FIRST AXIS ON RELATIVE ROTATION BETWEEN SAID PARTS IN EITHER DIRECTION WITHIN SAID FREE-MOTION RANGE.
Claim 2
Dependent Claim
149 words
IN A SYNCHRONOUS REACTION MOTOR, THE COMBINATION WITH A FIELD INCLUDING FIELD POLES ARRANGED CIRCULARLY ABOUT A FIRST AXIS, A COIL ACTING WHEN ENERGIZED TO EXCITE SAID FIELD, A SHAFT PART JOURNALLED FOR ROTATION ABOUT SAID AXIS, AND A PERMANENT-MAGNET ROTOR PART TURNABLE ON SAID SHAFT PART AND HAVING POLES OF OPPOSITE POLARITIES COOPERATING WITH SAID FIELD POLES, OF A DEVICE PROVIDING FOR FREE RELATIVE ROTARY MOTION BETWEEN SAID PARTS OVER A GIVEN ANGULAR RANGE; AND A RESILIENT COUPLING BETWEEN SAID PARTS PROVIDING A HELICAL SPRING CARRIED BY ONE OF SAID PARTS WITH ITS AXIS SPACED FROM AND PARALLEL TO SAID FIRST AXIS AND HAVING A FREE LENGTH TO ONE END THEREOF, AND SPACED SHOULDERS ON THE OTHER PART BETWEEN WHICH SAID SPRING LENGTH EXTENDS AND BY WHICH IT IS DEFLECTED TRANSVERSELY OF SAID FIRST AXIS ON RELATIVE ROTATION BETWEEN SAID PARTS IN EITHER DIRECTION WITHIN SAID FREE-MOTION RANGE.
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) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |