Patent US3221191A successfully refreshed from Google Patents.
US3221191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Angular displacement solenoid
Assignee: Daco Instrument Co Inc
•
Filing: 1962-09-12
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Granted: 1965-11-30
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Expires: 1982-09-12
Abstract
No abstract record available.
Inventors
- 👤 John P Cuches
- 👤 Frazier Richard Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:46
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/14; H01F7/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A ROTARY ELECTROMAGNETIC ACTUATOR COMPRISING A STATOR HAVING AT LEAST TWO ELONGATED POLE PIECES ARRANGED IN SPACED LOCATIONS, A ROTOR ROTATABLY MOUNTED AROUND THE FREE END OF ONE OF SAID POLE PIECES, SAID ONE POLE PIECE EXTENDING INTO AND BEING PERPENDICULAR TO SAID ROTOR, SAID ROTOR HAVING AN OUTER FACE ARRANGED TO ROTATE PAST THE INSIDE FACE OF THE OTHER OF SAID POLE PIECES, SAID STATOR INCLUDING ELECTROMAGNETIC MEANS TO ENERGIZE SAID POLE PIECES TO ROTATE SAID ROTOR IN ONE DIRECTION, AND MEANS COOPERATING WITH SAID ROTOR FOR ROTATING THE ROTOR IN THE OPPOSITE DIRTECTION WHEN SAID ELECTROMAGNETIC MEANS IS NOT EFFECTIVE, AND ADJUSTABLE STOP MEANS SECURED TO THE OTHER OF SAID POLE PIECES AND EXTENDING INTO THE PATH OF ROTATION OF THE ROTOR AT THE STOP POSITION, SAID STOP MEANS BEING MADE OF MAGNETIC MATERIAL WHEREBY TO HOLD ROTOR IN THE ENERGIZED POSITION.
Claim 2
Dependent Claim
144 words
A ROTARY ELECTROMAGNETIC ACTUATOR COMPRISING A STATOR HAVING AT LEAST TWO ELONGATED POLE PIECES ARRANGED IN SPACED LOCATIONS, A ROTOR ROTATABLY MOUNTED AROUND THE FREE END OF ONE OF SAID POLE PIECES, SAID ONE POLE PIECE EXTENDING INTO AND BEING PERPENDICULAR TO SAID ROTOR, SAID ROTOR HAVING AN OUTER FACE ARRANGED TO ROTATE PAST THE INSIDE FACE OF THE OTHER OF SAID POLE PIECES, SAID STATOR INCLUDING ELECTROMAGNETIC MEANS TO ENERGIZE SAID POLE PIECES TO ROTATE SAID ROTOR IN ONE DIRECTION, AND MEANS COOPERATING WITH SAID ROTOR FOR ROTATING THE ROTOR IN THE OPPOSITE DIRTECTION WHEN SAID ELECTROMAGNETIC MEANS IS NOT EFFECTIVE, AND ADJUSTABLE STOP MEANS SECURED TO THE OTHER OF SAID POLE PIECES AND EXTENDING INTO THE PATH OF ROTATION OF THE ROTOR AT THE STOP POSITION, SAID STOP MEANS BEING MADE OF MAGNETIC MATERIAL WHEREBY TO HOLD ROTOR IN THE ENERGIZED POSITION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |