Patent US4477745A successfully refreshed from Google Patents.
US4477745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disc rotor permanent magnet generator
Assignee: Individual
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Filing: 1983-12-15
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Granted: 1984-10-16
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Expires: 2003-12-15
Abstract
Abstract A permanent magnet generator having a plurality of magnets mounted, extending from either side of a central rotor disk adapted to pass between both an inner stator and an outer stator so as to induce current therein.
Inventors
- 👤 Gregory F. Lux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:48
CPC Classifications
H; H02; H02K; H02K21/00; H02K21/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
164 words
An improved permanent magnetic generator comprising: a rotor disk; a plurality of magnets mounted adjacent to one another on said rotor disk, said magnets adapted to extend beyond said disk on each side thereof and said magnets being bevelled at the sides of their tops and bottoms to prevent overlap of their magnetic fields; an inner stator having a first and second side positioned immediately under said magnets on each side of said rotor disk, each side of said inner stator carrying a plurality of coils in which current can be induced by movement of said magnets on said rotor; and an outer stator positioned immediately above said magnets concentric to and circumferentially around said magnets having a first set of coils above the magnets on one side of said rotor disk and a second set of coils above the magnets on the other side of said rotor disk, said coils adapted so that a current is induced therein upon rotation of said magnets.
Claim 2
Dependent Claim
164 words
An improved permanent magnetic generator comprising: a rotor disk; a plurality of magnets mounted adjacent to one another on said rotor disk, said magnets adapted to extend beyond said disk on each side thereof and said magnets being bevelled at the sides of their tops and bottoms to prevent overlap of their magnetic fields; an inner stator having a first and second side positioned immediately under said magnets on each side of said rotor disk, each side of said inner stator carrying a plurality of coils in which current can be induced by movement of said magnets on said rotor; and an outer stator positioned immediately above said magnets concentric to and circumferentially around said magnets having a first set of coils above the magnets on one side of said rotor disk and a second set of coils above the magnets on the other side of said rotor disk, said coils adapted so that a current is induced therein upon rotation of said magnets.
Claim 3
Dependent Claim
22 words
The device of claim 1 wherein said magnets are narrower at their central portion where they are attached to said rotor disk.
Claim 4
Dependent Claim
22 words
The device of claim 2 wherein the narrow portion of each of said magnets is of a different material from said magnets.
Claim 5
Dependent Claim
61 words
The device of claim 1 wherein the widths of the ends of said magnets adjacent to said inner stator are narrower than the widths of the ends of said magnets adjacent to said outer stator to accommodate the smaller circumference of said inner stator, and said inner and outer magnet ends being adapted in length to have the same surface area.
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) | 1987-10-16 | 1988-04-16 | 1988-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-16 | 1992-04-16 | 1992-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-16 | 1996-04-16 | 1996-10-16 | $7700.00 | Window Closed / Lapsed |