US5625241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carousel electric generator
Assignee: Fuelcell Energy Inc
•
Filing: 1994-07-28
•
Granted: 1997-04-29
•
Expires: 2014-07-28
Abstract
Abstract A permanent magnet generator or motor having stationary coils positioned in a circle, a rotor on which are mounted permanent magnets grouped in sectors and positioned to move adjacent said coils, and a carousel carrying corresponding groups of permanent magnets through the centers of said coils, the carousel moving with the rotor by virtue of its being magnetically coupled therewith.
Inventors
- 👤 Harold E. Ewing
- 👤 Russell R. Chapman
- 👤 David R. Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:12
CPC Classifications
H; H02; H02K; H02K21/00; H02K21/12
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
182 words
A device for converting rotational motion into electrical current and vice versa, the device having a stator, a rotor, means for rotating said rotor, and means for transmitting electrical current, the device comprising: said stator having a plurality of coils, each of said coils having an interior and an exterior, the interiors of said coils being oriented along the circumference of a circle, the coils being in electrical communication with the transmitting means; said rotor having a plurality of permanent magnets, said permanent magnets being arranged in a configuration having a plurality of sectors equal to the plurality of coils, with alternating sectors being populated with one or more permanent magnets and the remaining sectors being unpopulated, said permanent magnets traversing the exterior of said coils during rotor rotation, and a carousel being positioned to pass through the interior of said coils during rotor rotation, the carousel having carousel magnets mounted thereon wherein one or more carousel magnets correspond to each of said populated sectors, each of said carousel magnets being magnetically locked to the permanent magnets of said corresponding populated sectors.
Claim 2
Independent Claim
182 words
A device for converting rotational motion into electrical current and vice versa, the device having a stator, a rotor, means for rotating said rotor, and means for transmitting electrical current, the device comprising: said stator having a plurality of coils, each of said coils having an interior and an exterior, the interiors of said coils being oriented along the circumference of a circle, the coils being in electrical communication with the transmitting means; said rotor having a plurality of permanent magnets, said permanent magnets being arranged in a configuration having a plurality of sectors equal to the plurality of coils, with alternating sectors being populated with one or more permanent magnets and the remaining sectors being unpopulated, said permanent magnets traversing the exterior of said coils during rotor rotation, and a carousel being positioned to pass through the interior of said coils during rotor rotation, the carousel having carousel magnets mounted thereon wherein one or more carousel magnets correspond to each of said populated sectors, each of said carousel magnets being magnetically locked to the permanent magnets of said corresponding populated sectors.
Claim 3
Dependent Claim
10 words
The device according to claim 1 being an electrical generator.
Claim 4
Dependent Claim
9 words
The device according to claim 1 being a motor.
Claim 5
Dependent Claim
48 words
The device according to claim 2 wherein said populated sectors comprise two permanent magnets mounted in magnetic opposition to each other, said two permanent magnets being positioned opposite each other in the interior of said coil, said two permanent magnets being magnetically oriented perpendicular to said carousel magnets.
Claim 6
Dependent Claim
45 words
The device according to claim 2 wherein said populated sectors comprise three permanent magnets positioned on the exterior of said coil, said three permanent magnets having like poles faces directed towards said exterior of said coil and perpendicular to the faces of the carousel magnets.
Claim 7
Dependent Claim
24 words
The device according to claim 1 further comprising a housing which encloses said stator and said rotor, said stator being mounted on said housing.
Claim 8
Dependent Claim
25 words
The device according to claim 1 wherein the carousel comprises an upper retaining ring and a lower retaining ring, said carousel magnets being mounted therebetween.
Claim 9
Dependent Claim
14 words
The device according to claim 7 further comprising an air bearing supporting said carousel.
Claim 10
Dependent Claim
13 words
The device according to claim 1 comprising an even number of sequential coils.
Claim 11
Dependent Claim
43 words
The device according to claim 1 wherein: the north poles of said carousel magnets are positioned to face each other so as to confine and to channel the flux in a desired path thereby eliminating magnetic yokes and coil laminations for that purpose.
Claim 12
Dependent Claim
54 words
The device according to claim 9 wherein in the means for transmitting electrical current further comprises an odd number group wherein the odd numbered coils are wound clockwise, and an even number group wherein the even numbered coils are wound counterclockwise wherein all coils are in phase with sequential magnetic fields having opposite polarities.
Claim 13
Dependent Claim
68 words
The device according to claim 11 wherein the means for transmitting electrical current wherein the odd numbered coils are electrically connected in parallel to each other, and wherein the even numbered coils are electrically connected in parallel to each other, and further wherein said odd number group is electrically connected in series with said even number group, the resulting electrical current being transmitted to a point of use.
Claim 14
Dependent Claim
23 words
The device according to claim 12 wherein the coils are electrically connected so that fundamental components of serially connected coils will be additive.
Claim 15
Dependent Claim
81 words
The device according to claim 12 wherein alternate coils of said even number of sequential coils are designated as even numbered coils and the remaining coils are designated as odd numbered coils; said coils being connected in any of various series and parallel combinations with all parallel branches containing equal numbers of even numbered and odd numbered coils, and the fundamental components of serially connected even numbered coils and odd numbered coils are rendered additive according to claim 11 or 12.
Claim 16
Dependent Claim
16 words
The device according to claim 1 wherein two carousel magnets are mounted per each populated sector.
Claim 17
Dependent Claim
89 words
The device according to claim 1 wherein three permanent magnets are mounted in each populated sector of said rotor and three carousel magnets are mounted in each populated sector of said carousel, said permanent magnets being arranged to move past three adjacent outer sides of the coil, said carousel magnets being arranged to move past the same three adjacent sides of the coil as they pass through the inside of the coil, each of said three carousel magnets being aligned opposite a corresponding one of said three permanent magnets.
Claim 18
Dependent Claim
60 words
The device according to claim 1 comprising eighteen coils, wherein said populated sectors comprise three permanent magnets positioned on the exterior of each coil, said three permanent magnets having like pole faces directed towards said exterior of said coil and perpendicular to the faces of said carousel magnets, and further wherein two carousel magnets are mounted per each populated sector.
Claim 19
Dependent Claim
37 words
The device according to claim 3 wherein: said coils are excited by a pulsed d-c voltage under the control of a control system comprising a rotor position sensor, a programmable logic controller and a power control circuit.
Claim 20
Dependent Claim
19 words
The device according to claim 18 with the further incorporation of a potentiometer for use as a speed control.
Claim 21
Dependent Claim
29 words
The device according to claim 1 having stationary elements that are exposed to strong magnetic field patterns, said stationary elements being fabricated from Delrin or Teflon plastic or equivalent.
Claim 22
Dependent Claim
17 words
The device according to claim 1 wherein four carousel magnets correspond to each of said populated sectors.
Claim 23
Dependent Claim
49 words
The device according to claim 21 wherein each of said populated sectors of said rotor has four permanent magnets, each positioned opposite a corresponding one of said four carousel magnets about the four sides of one of said coils as said rotor and said carousel move past said coil.
References Cited (Backward Citations)
US3610974A
Cited
US4547713A
Cited
US5117142A
Cited
US5289072A
Cited
US5293093A
Cited
US5304883A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-04-28 | 2000-10-28 | 2001-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-04-28 | 2004-10-28 | 2005-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-04-28 | 2008-10-28 | 2009-04-29 | $7700.00 | Window Closed / Lapsed |