US3236928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing curved radially aligned matrix bonded fine particle permanent magnets
Assignee: Leyman Corp
•
Filing: 1963-11-06
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Granted: 1966-02-22
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Expires: 1983-11-06
Abstract
No abstract record available.
Inventors
- 👤 Jr Walter S Blume
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:13
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/032; H01F1/04; H01F1/06; H01F1/08; H01F1/083; H01F41/00; H01F41/02; H01F41/0253; H01F41/0273; H01F41/028; Y; Y10; Y10S; Y10S264/00; Y10S264/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A METHOD OF CONVERTING A FLAT SLAB OF MATRIX BONDED FINE PARTICLE PERMANENT MAGNET MATERIAL INTO AN OPENENDED CURVED SHAPE, SAID SLAB HAVING TWO OPPOSED FLAT SURFACES WHICH ARE OF LARGER AREA THAN THE OTHER SURFACES OF SAID SLAB AND DISPLAYING MAGNETIC ALIGNMENT IN A DIRECTION WHICH IS PERPENDICULAR TO SAID TWO SURFACES, SAID METHOD COMPRISING, FORCING SAID SLAB THROUGH A DIE HAVING A CAVITY WHICH AT ONE END CONFORMS TO THE SHAPE OF SAID SLAB AND WHICH TAPERS AND CURVES TO AN OUTLET ORIFICE AT THE OTHER END THEREOF WHICH CONFORMS TO THE CROSSSECTIONAL FORM OF SAID CORVED SHAPE, SAID SLAB BEING FORCED THROUGH SAID DIE IN A DIRECTION WHICH IS TRANSVERSE TO THE DIRECTION OF ALIGNMENT OF SAID SLAB, REDUCING SAID SLAB INTHICKNESS AND ELONGATING SAID SLAB AS SAID SLAB PASSES THROUGH SAID DIE, THE DIRECTION OF ALIGNMENT OF SAID MATERIAL BEING SUBSTANTIALLY UNAFFECTED BY SAID METHOD AND REMAINING PERPENDICULAR TO SAID TWO SURFACES.
Claim 2
Independent Claim
156 words
A METHOD OF CONVERTING A FLAT SLAB OF MATRIX BONDED FINE PARTICLE PERMANENT MAGNET MATERIAL INTO AN OPENENDED CURVED SHAPE, SAID SLAB HAVING TWO OPPOSED FLAT SURFACES WHICH ARE OF LARGER AREA THAN THE OTHER SURFACES OF SAID SLAB AND DISPLAYING MAGNETIC ALIGNMENT IN A DIRECTION WHICH IS PERPENDICULAR TO SAID TWO SURFACES, SAID METHOD COMPRISING, FORCING SAID SLAB THROUGH A DIE HAVING A CAVITY WHICH AT ONE END CONFORMS TO THE SHAPE OF SAID SLAB AND WHICH TAPERS AND CURVES TO AN OUTLET ORIFICE AT THE OTHER END THEREOF WHICH CONFORMS TO THE CROSSSECTIONAL FORM OF SAID CORVED SHAPE, SAID SLAB BEING FORCED THROUGH SAID DIE IN A DIRECTION WHICH IS TRANSVERSE TO THE DIRECTION OF ALIGNMENT OF SAID SLAB, REDUCING SAID SLAB INTHICKNESS AND ELONGATING SAID SLAB AS SAID SLAB PASSES THROUGH SAID DIE, THE DIRECTION OF ALIGNMENT OF SAID MATERIAL BEING SUBSTANTIALLY UNAFFECTED BY SAID METHOD AND REMAINING PERPENDICULAR TO SAID TWO SURFACES.
References Cited (Backward Citations)
US2804651A
Cited
US3127461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |