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US3422295A
Expired / Lapsed
US
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Permanent magnet stator with split casing and method of making
Assignee: General Electric Co
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Filing: 1966-09-01
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Granted: 1969-01-14
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Expires: 1986-09-01
Abstract
No abstract record available.
Inventors
- 👤 Rollin J Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:49
CPC Classifications
H; H02; H02K; H02K23/00; H02K23/02; H02K23/04; H02K1/00; H02K1/06; H02K1/12; H02K1/17; H02K15/00; H02K15/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A DYNAMOELECTRIC MACHINE COMPRISING: A ROTOR AND A STATOR; SAID STATOR COMPRISING A PERMANENT MAGNET, ARRANGED ALONGSIDE SAID ROTOR AND HAVING AN INNER FACE SPACED A SHORT DISTANCE FROM THE PERIPHERY OF THE ROTOR TO FORM AN AIR GAP; A CASING SURROUNDING THE ROTOR AND MAGNETIC AND FORMED OF A MAGNETICALLY PERMEABLE MATERIAL FOR PROVIDING A RETURN PATH FOR MAGNETIC FLUX; SAID CASING BEING LONGITUDINALLY SPLIT, WITH THE SPLIT BEING ALIGNED WITH THE NEUTRAL REGION OF THE MAGNET, WHICH EXTENDS PARALLEL TO THE ROTOR AXIS, WITH THE OUTER SURFACE OF THE MAGNETIC THEREBY BRIDGING SAID LONGITUDINAL SPLIT AND BEING IN CONTACT WITH THE INNER SURFACE OF THE CASING ON BOTH SIDES OF THE LONGITUDINAL SPLIT; SAID OUTER CASING BEING FORCIBILY COLLAPSIBLE DUE TO THE SPLIT, TO THEREBY MOVE THE MAGNETIC TOWARDS THE ROTOR TO PRESENT THE AIR GAP; AND MEANS FOR FIXING THE CASING AT THE SPLIT AGAINST COLLAPSING AFTER THE AIR GAP IS THEREBY PRESET.
Claim 2
Dependent Claim
156 words
A DYNAMOELECTRIC MACHINE COMPRISING: A ROTOR AND A STATOR; SAID STATOR COMPRISING A PERMANENT MAGNET, ARRANGED ALONGSIDE SAID ROTOR AND HAVING AN INNER FACE SPACED A SHORT DISTANCE FROM THE PERIPHERY OF THE ROTOR TO FORM AN AIR GAP; A CASING SURROUNDING THE ROTOR AND MAGNETIC AND FORMED OF A MAGNETICALLY PERMEABLE MATERIAL FOR PROVIDING A RETURN PATH FOR MAGNETIC FLUX; SAID CASING BEING LONGITUDINALLY SPLIT, WITH THE SPLIT BEING ALIGNED WITH THE NEUTRAL REGION OF THE MAGNET, WHICH EXTENDS PARALLEL TO THE ROTOR AXIS, WITH THE OUTER SURFACE OF THE MAGNETIC THEREBY BRIDGING SAID LONGITUDINAL SPLIT AND BEING IN CONTACT WITH THE INNER SURFACE OF THE CASING ON BOTH SIDES OF THE LONGITUDINAL SPLIT; SAID OUTER CASING BEING FORCIBILY COLLAPSIBLE DUE TO THE SPLIT, TO THEREBY MOVE THE MAGNETIC TOWARDS THE ROTOR TO PRESENT THE AIR GAP; AND MEANS FOR FIXING THE CASING AT THE SPLIT AGAINST COLLAPSING AFTER THE AIR GAP IS THEREBY PRESET.
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) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |