US3158797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for magnetizing circular magnets
Assignee: Stackpole Carbon Co
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Filing: 1961-10-31
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Granted: 1964-11-24
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Expires: 1981-10-31
Abstract
No abstract record available.
Inventors
- 👤 Lewis D Andrews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:39
CPC Classifications
H; H01; H01F; H01F13/00; H01F13/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A DEVICE FOR MAGNETIZING CIRCULAR MAGNETS, COMPRISING A CIRCULAR MAGNETIC RETURN MEMBER PROVIDED WITH AN EVEN NUMBER OF LATERALLY SPACED RADIAL POLES, AND A CONTINUOUS ELECTRICAL CONDUCTOR HAVING A FIRST PORTION EXTENDING FROM POLE TO POLE AROUND SAID MEMBER IN ONE DIRECTION AND HAVING A SECOND PORTION EXTENDING BACK IN REVERSE DIRECTION AROUND SAID MEMBER FROM POLE TO POLE, SAID FIRST PORTION OF THE CONDUCTOR EXTENDING AROUND THE ODD NUMBER POLES IN ONE DIRECTION AND AROUND THE EVEN NUMBER POLES IN THE OPPOSITE DIRECTION, AND SAID SECOND PORTION OF THE CONDUCTOR EXTENDING IN THE SAME DIRECTION AROUND EACH POLE AS SAID FIRST PORTION, THE CONDUCTOR BEING INSULATED FROM SAID POLES.
Claim 2
Independent Claim
110 words
A DEVICE FOR MAGNETIZING CIRCULAR MAGNETS, COMPRISING A CIRCULAR MAGNETIC RETURN MEMBER PROVIDED WITH AN EVEN NUMBER OF LATERALLY SPACED RADIAL POLES, AND A CONTINUOUS ELECTRICAL CONDUCTOR HAVING A FIRST PORTION EXTENDING FROM POLE TO POLE AROUND SAID MEMBER IN ONE DIRECTION AND HAVING A SECOND PORTION EXTENDING BACK IN REVERSE DIRECTION AROUND SAID MEMBER FROM POLE TO POLE, SAID FIRST PORTION OF THE CONDUCTOR EXTENDING AROUND THE ODD NUMBER POLES IN ONE DIRECTION AND AROUND THE EVEN NUMBER POLES IN THE OPPOSITE DIRECTION, AND SAID SECOND PORTION OF THE CONDUCTOR EXTENDING IN THE SAME DIRECTION AROUND EACH POLE AS SAID FIRST PORTION, THE CONDUCTOR BEING INSULATED FROM SAID POLES.
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) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |