US3249825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of magnetizing a permanent magnet
Assignee: Unisys Corp
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Filing: 1963-12-02
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Granted: 1966-05-03
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Expires: 1983-12-02
Abstract
No abstract record available.
Inventors
- 👤 Joel R Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:47
CPC Classifications
H; H01; H01F; H01F13/00; H01F13/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
MEANS FOR MAGNETIZING A BODY OF PERMANENT MAGNETIC MATERIAL COMPRISING, AN ELONGATED BODY OF PERMANENT MAGNET MATERIAL HAVING A PAIR OF ELONGATED SURFACES THAT EXTEND THROUGHOUT THE LENGTH OF SAID BODY TO FORM POLE FACES OF A MAGNET, AN ELONGATED SOLID MEMBER OF SOFT MAGNETIC MATERIAL DISPOSED BETWEEN THE LENGTHS OF SAID SURFACES FOR PROVIDING A MAGNETIC FLUX PATH THEREBETWEEN WHICH IS OF NONUNIFORM RELUCTANCE IN A DIRECTION ALONG THE LENGTHS OF SAID SURFACES, SAID MEMBER BEING SHAPED THROUGHOUT ITS LENGTH TO HAVE A NONUNIFORM HEIGHT BETWEEN SAID SURFACES AND A UNIFORM WIDTH, AND MEANS FOR PASSING A MAGNETIZING FLUX THROUGH SAID BODY AND SAID MEMBER OF SOFT MAGNETIC MATERIAL IN A DIRECTION TRANSVERSE TO SAID SURFACES TO FORM MAGNETIC POLES AT SAID SURFACES.
Claim 2
Dependent Claim
124 words
MEANS FOR MAGNETIZING A BODY OF PERMANENT MAGNETIC MATERIAL COMPRISING, AN ELONGATED BODY OF PERMANENT MAGNET MATERIAL HAVING A PAIR OF ELONGATED SURFACES THAT EXTEND THROUGHOUT THE LENGTH OF SAID BODY TO FORM POLE FACES OF A MAGNET, AN ELONGATED SOLID MEMBER OF SOFT MAGNETIC MATERIAL DISPOSED BETWEEN THE LENGTHS OF SAID SURFACES FOR PROVIDING A MAGNETIC FLUX PATH THEREBETWEEN WHICH IS OF NONUNIFORM RELUCTANCE IN A DIRECTION ALONG THE LENGTHS OF SAID SURFACES, SAID MEMBER BEING SHAPED THROUGHOUT ITS LENGTH TO HAVE A NONUNIFORM HEIGHT BETWEEN SAID SURFACES AND A UNIFORM WIDTH, AND MEANS FOR PASSING A MAGNETIZING FLUX THROUGH SAID BODY AND SAID MEMBER OF SOFT MAGNETIC MATERIAL IN A DIRECTION TRANSVERSE TO SAID SURFACES TO FORM MAGNETIC POLES AT SAID SURFACES.
References Cited (Backward Citations)
US3005458A
Cited
US3140457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |