US3187237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanent magnet assembly
Assignee: Associated Electrical Industries Ltd
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Filing: 1962-04-30
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Granted: 1965-06-01
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Expires: 1982-04-30
Abstract
No abstract record available.
Inventors
- 👤 Craig Robert Derek
- 👤 Williams John Lewis
- 👤 Willdig Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:50
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/02; H01F7/0273; H01F7/0278; G; G01; G01R; G01R33/00; G01R33/20; G01R33/28; G01R33/38; G01R33/383
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A MAGNET ASSEMBLY COMPRISING TWO MAGNETS EXTENDING AXIALLY TOWARDS EACH OTHER WITH THEIR ADJACENT ENDS DEFINING A GAP IN WHICH IS PRODUCED A HIGH INTENSITY MAGNETIC FIELD, AND MEANS PROVIDING A SCREEN AGAINST EXTERNAL MAGNETIC FIELDS AND PROTECTION AGAINST AMBIENT TEMPERATURE VARIATIONS COMPRISING A CYLINDRICAL YOKE OF A GODD THERMALLY CONDUCTING HIGH PERMEABILITY MATERIAL CONNECTING SAID MAGNETS AND EXTENDING CO-AXIALLY AROUND SAID MAGNETS.
Claim 2
Dependent Claim
63 words
A MAGNET ASSEMBLY COMPRISING TWO MAGNETS EXTENDING AXIALLY TOWARDS EACH OTHER WITH THEIR ADJACENT ENDS DEFINING A GAP IN WHICH IS PRODUCED A HIGH INTENSITY MAGNETIC FIELD, AND MEANS PROVIDING A SCREEN AGAINST EXTERNAL MAGNETIC FIELDS AND PROTECTION AGAINST AMBIENT TEMPERATURE VARIATIONS COMPRISING A CYLINDRICAL YOKE OF A GODD THERMALLY CONDUCTING HIGH PERMEABILITY MATERIAL CONNECTING SAID MAGNETS AND EXTENDING CO-AXIALLY AROUND SAID MAGNETS.
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) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |