US4877986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor of magnetic generator
Assignee: Mitsubishi Electric Corp
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Filing: 1988-05-19
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Granted: 1989-10-31
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Expires: 2008-05-19
Abstract
Abstract A rotor of a magnetic generator has a plurality of permanent magnets (13) disposed on an inner surface of a peripheral wall (11a) of a bowl-shaped flywheel (11). The permanent magnets (13) are held in place by a magnet-holding cylinder (14) having plural outward protrusions (14c) formed in a radial direction at a first open end and an outward flange (14e ) formed on a second open end thereof. Resin (15) is provided to fill empty spaces of this assembly so that the magnets (13), the magnet-holding cylinder (14) and the flywheel (11) are made of an integral piece thereby.
Inventors
- 👤 Yuzuru Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:29
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/22; H02K1/27; H02K1/2786; H02K1/2787; H02K1/2789; H02K1/279; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49012
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
160 words
A rotor of a magnetic generator, comprising: a bowl-shaped flywheel having a disc-shaped bottom part and a cylindrical peripheral wall part of a first inside diameter; a plurality of magnets, disposed on an inner surface of said peripheral wall of said flywheel at intervals of a predetermined angle; a magnet-holding cylinder having an inner cylindrical surface of a predetermined second diameter smaller than said first inside diameter having an outward flange formed on a first open end and a plurality of outward protrusions circularly formed on a second open end at intervals of another predetermined angle, said plurality of magnets being respectively positioned thereby to be parallel to the axis of said magnet-holding cylinder; and a resin molded member, that fills in spaces formed between said flywheel, said magnets and said magnet-holding cylinder for making said flywheel, said magnets and said magnet-holding cylinder in one piece so as to leave an inside open space contiguous with said inner cylindrical surface.
Claim 2
Dependent Claim
160 words
A rotor of a magnetic generator, comprising: a bowl-shaped flywheel having a disc-shaped bottom part and a cylindrical peripheral wall part of a first inside diameter; a plurality of magnets, disposed on an inner surface of said peripheral wall of said flywheel at intervals of a predetermined angle; a magnet-holding cylinder having an inner cylindrical surface of a predetermined second diameter smaller than said first inside diameter having an outward flange formed on a first open end and a plurality of outward protrusions circularly formed on a second open end at intervals of another predetermined angle, said plurality of magnets being respectively positioned thereby to be parallel to the axis of said magnet-holding cylinder; and a resin molded member, that fills in spaces formed between said flywheel, said magnets and said magnet-holding cylinder for making said flywheel, said magnets and said magnet-holding cylinder in one piece so as to leave an inside open space contiguous with said inner cylindrical surface.
Claim 3
Dependent Claim
21 words
A rotor of a magnetic generator in accordance with claim 1, wherein: said magnet-holding cylinder comprises a circularly-shaped thin iron sheet.
Claim 4
Dependent Claim
159 words
A rotor of a magnetic generator, comprising: a bowl-shaped flywheel having a disc-shaped bottom part and a peripheral wall part; a plurality of magnets disposed on an inner surface of said peripheral wall of said flywheel at intervals of a first predetermined angle; a magnet-holding cylinder having a first outward flange formed on a first open end, a plurality of first outward protrusions circularly formed on a second open end at intervals of a second predetermined angle for positioning at intervals of a second predetermined angle for positioning said magnet-holding cylinder and a plurality second outward protrusions circularly formed and disposed between said first and second open ends at intervals of a third predetermined angle for positioning said magnets parallel to the axis of said rotor; and a resin molded member, formed to fill in spaces formed between said flywheel, said magnets and said magnet-holding cylinder for forming said flywheel, said magnets and said magnet-holding cylinder into one piece.
Claim 5
Dependent Claim
159 words
A rotor of a magnetic generator, comprising: a bowl-shaped flywheel having a disc-shaped bottom part and a peripheral wall part; a plurality of magnets disposed on an inner surface of said peripheral wall of said flywheel at intervals of a first predetermined angle; a magnet-holding cylinder having a first outward flange formed on a first open end, a plurality of first outward protrusions circularly formed on a second open end at intervals of a second predetermined angle for positioning at intervals of a second predetermined angle for positioning said magnet-holding cylinder and a plurality second outward protrusions circularly formed and disposed between said first and second open ends at intervals of a third predetermined angle for positioning said magnets parallel to the axis of said rotor; and a resin molded member, formed to fill in spaces formed between said flywheel, said magnets and said magnet-holding cylinder for forming said flywheel, said magnets and said magnet-holding cylinder into one piece.
Claim 6
Dependent Claim
30 words
A rotor of a magnetic generator in accordance with claim 3, wherein: said cylindrical magnet-holding cylinder comprises a circularly-shaped thin iron sheet formed to provide said first and second protrusions.
Claim 7
Dependent Claim
22 words
A rotor of a magnetic generator in accordance with claim 1, wherein: said cylindrical magnet-holding cylinder comprises a circularly-shaped stainless steel sheet.
Claim 8
Dependent Claim
22 words
A rotor of a magnetic generator in accordance with claim 3, wherein: said cylindrical magnet-holding cylinder comprises a circularly-shaped stainless steel sheet.
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) | 1992-10-30 | 1993-05-01 | 1993-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-30 | 1997-05-01 | 1997-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-30 | 2001-05-01 | 2001-10-31 | $7700.00 | Window Closed / Lapsed |