US3299381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic actuator device with coupled rotors
Assignee: Seismograph Service Corp
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Filing: 1966-05-02
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Granted: 1967-01-17
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Expires: 1986-05-02
Abstract
No abstract record available.
Inventors
- 👤 Frank R Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:26
CPC Classifications
A; A63; A63H; A63H17/00; A63H17/26; A63H17/36; H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A LIGHT-WEIGHT MAGNETIC ACTUATOR FOR CONTROLLING A MODEL VEHICLE COMPRISING, (A) AN ELECTROMAGNET HAVING A CORE AND A WINDING ON THE CORE, (B) A PAIR OF MAGNETIZABLE ASSEMBLIES CONNECTED TO OPPOSITE ENDS OF THE CORE AND SELECTIVELY ENERGIZED THEREBY, (C) SAID ASSEMBLIES ARRANGED ON OPPOSITE SIDES OF AND SPACED FROM THE CORE, (D) EACH ASSEMBLY INCLUDING MAGNETIZABLE POLE PIECES DISPOSED IN A COMMON PLANE TO COMPLETE A SEPARATE MAGNETIC CIRCUIT, AND A PERMANENT MAGNET MEMBER MOUNTED IN A PLANE PARALLEL TO SAID COMMON PLANE, (E) EACH MAGNET MEMBER HAVING A ROCK SHAFT JOINED FOR MOVEMENT THEREWITH FOR PROVIDING A MECHANICAL OUTPUT, AND (F) NON-MAGNETIC COUPLING MEANS CONNECTING SAID MAGNETS TO PROVIDE A COMMON MECHANICAL OUTPUT FROM BOTH OF SAID ROCK SHAFTS.
Claim 2
Dependent Claim
121 words
A LIGHT-WEIGHT MAGNETIC ACTUATOR FOR CONTROLLING A MODEL VEHICLE COMPRISING, (A) AN ELECTROMAGNET HAVING A CORE AND A WINDING ON THE CORE, (B) A PAIR OF MAGNETIZABLE ASSEMBLIES CONNECTED TO OPPOSITE ENDS OF THE CORE AND SELECTIVELY ENERGIZED THEREBY, (C) SAID ASSEMBLIES ARRANGED ON OPPOSITE SIDES OF AND SPACED FROM THE CORE, (D) EACH ASSEMBLY INCLUDING MAGNETIZABLE POLE PIECES DISPOSED IN A COMMON PLANE TO COMPLETE A SEPARATE MAGNETIC CIRCUIT, AND A PERMANENT MAGNET MEMBER MOUNTED IN A PLANE PARALLEL TO SAID COMMON PLANE, (E) EACH MAGNET MEMBER HAVING A ROCK SHAFT JOINED FOR MOVEMENT THEREWITH FOR PROVIDING A MECHANICAL OUTPUT, AND (F) NON-MAGNETIC COUPLING MEANS CONNECTING SAID MAGNETS TO PROVIDE A COMMON MECHANICAL OUTPUT FROM BOTH OF SAID ROCK SHAFTS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |