US3119940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetomotive actuators of the rectilinear output type
Assignee: Unisys Corp
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Filing: 1961-05-16
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Granted: 1964-01-28
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Expires: 1981-05-16
Abstract
No abstract record available.
Inventors
- 👤 Robert H Pettit
- 👤 Lawrence A Schneck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:26
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/16; H01F7/1607; H01F7/1615; H01F7/121; H01F7/122
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
114 words
IN A MAGNETOMOTIVE ACTUATOR OF THE RECTILINEAR OUTPUT TYPE, A STATOR AND AN AXIALLY MOVABLE MAGNETIC ARMATURE HAVING AXIALLY SPACED END POLES AND INTERMEDIATE POLES, SAID STATOR INCLUDING AN ANNULAR FLUX CONDUCTIVE MEMBER CONCENTRIC TO THE AXIS OF THE ARMATURE HAVING OPPOSITELY POLARIZED ENDS, A FIRST ELECTROMAGNET WITH A MAGNETIC CORE HAVING AXIALLY SPACED POLES CONNECTED TO ONE END OF THE MEMBER ARRANGED IN GAP RELATION TO ONE OF THE END POLES AND INTERMEDIATE POLES OF THE ARMATURE, AND A SECOND ELECTROMAGNET WITH A MAGNETIC CORE HAVING AXIALLY SPACED POLES CONNECTED TO THE OTHER END OF THE MEMBER ARRANGED IN GAP RELATION TO THE OTHER OF THE END AND INTERMEDIATE POLES OF THE ARMATURE.
References Cited (Backward Citations)
US458872A
Cited
US1678278A
Cited
US1745503A
Cited
US2427898A
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US2447230A
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US2769103A
Cited
FR1057180A
Cited
US2938269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-27 | 1967-07-29 | 1968-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-27 | 1971-07-29 | 1972-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-27 | 1975-07-29 | 1976-01-28 | $7700.00 | Window Closed / Lapsed |