US3218523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic device having a permanent magnet armature
Assignee: Individual
•
Filing: 1963-07-29
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Granted: 1965-11-16
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Expires: 1983-07-29
Abstract
No abstract record available.
Inventors
- 👤 Benson Hector Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:34
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/14; H01F7/16; H01F7/1607; H01F7/1615; H01H; H01H50/00; H01H50/16; H01H50/18; H01H50/20; H01H50/22; H01H51/00; H01H51/22; H01H51/2236; H01F7/121; H01F7/122
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
AN ELECTRONAGMETIC DEVICE COMPRISING: A COIL; MEANS FOR SELECTIVELY DIRECTING ELECTRIC CURRENT TO FLOW IN EITHER DIRECTION THROUGH SAID COIL; A FERROMAGNETIC POLE PIECE IN SAID COIL AND HAVING A POLE FACE THEREIN; A MEMBER MOUNTED ADJACENT SAID POLE PIECE FOR MOVEMENT OF AT LEAST ONE PORTION OF SAID MEMBER TOWARD AND FROM SAID POLE FACE; SAID MEMBER BEING A PERMANENT MAGNET AND SAID ONE PORTION BEING ONE MAGNETIC POLE THEREOF, SAID POLE PIECE HAVING ANOTHER POLE FACE ADJACENT ANOTHER PORTION OF SAID MEMBER WHICH COMPRISES THE OTHER MAGNETIC POLE THEREOF; A FERROMAGNETIC STOP MEMBER, SEPARATE FROM SAID POLE PIECE, FIXED IN SPACED RELATION TO SAID POLE FACE AND SAID COIL; SAID MEMBER BEING ENGAGEABLE WITH SAID POLE PIECE OR WITH SAID STOP MEMBER, SELECTIVELY, TO BE MAGNETICALLY HELD THEREBY IN EITHER OF TWO POSITIONS.
Claim 2
Dependent Claim
135 words
AN ELECTRONAGMETIC DEVICE COMPRISING: A COIL; MEANS FOR SELECTIVELY DIRECTING ELECTRIC CURRENT TO FLOW IN EITHER DIRECTION THROUGH SAID COIL; A FERROMAGNETIC POLE PIECE IN SAID COIL AND HAVING A POLE FACE THEREIN; A MEMBER MOUNTED ADJACENT SAID POLE PIECE FOR MOVEMENT OF AT LEAST ONE PORTION OF SAID MEMBER TOWARD AND FROM SAID POLE FACE; SAID MEMBER BEING A PERMANENT MAGNET AND SAID ONE PORTION BEING ONE MAGNETIC POLE THEREOF, SAID POLE PIECE HAVING ANOTHER POLE FACE ADJACENT ANOTHER PORTION OF SAID MEMBER WHICH COMPRISES THE OTHER MAGNETIC POLE THEREOF; A FERROMAGNETIC STOP MEMBER, SEPARATE FROM SAID POLE PIECE, FIXED IN SPACED RELATION TO SAID POLE FACE AND SAID COIL; SAID MEMBER BEING ENGAGEABLE WITH SAID POLE PIECE OR WITH SAID STOP MEMBER, SELECTIVELY, TO BE MAGNETICALLY HELD THEREBY IN EITHER OF TWO POSITIONS.
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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |