US4864174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Generator device
Assignee: Isuzu Motors Ltd
•
Filing: 1988-09-19
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Granted: 1989-09-05
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Expires: 2008-09-19
Abstract
Abstract A generator device has a reluctance generator. The reluctance generator comprises stator coils and an I-shaped rotor. The stator coils includes a winding phase for being supplied with a 90°-leading armature current to generate a no-load induced electromotive force. The I-shaped rotor has an extremely small magnetic reluctance in a first direction normal to a rotational axis thereof and a large magnetic reluctance in a second direction normal to the first direction.
Inventors
- 👤 Hideo Kawamura
- 👤 Tadashi Fukao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:37
CPC Classifications
H; H02; H02K; H02K29/00; H02K29/06; F; F01; F01D; F01D15/00; F01D15/10; H02K19/00; H02K19/16; H02K19/22; H02K19/24; H02K99/00; H02K99/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
175 words
A generator device having a reluctance generator drivable by exhaust energy from an internal combustion engine, comprising: an impeller shaft rotatable by the exhaust energy from the internal combustion engine; a rotor shaft integrally construed with said impeller shaft; a circular rotor having a circumference and a substantially I-shaped solid cross sectional part with arcuate portions forming a part of the circumference and wedge shaped non-arcuate portions mounted on said rotor shaft and having a magnetic reluctance in a first direction normal to an axis of said rotor shaft and a smaller magnetic reluctance in a second direction normal to said first direction and to the axis of said rotor shaft, said rotor having a thickness in the first direction across said wedge shaped non-arcuate portions being substantially the same as a thickness of said arcuate portions in the first direction; wedge shaped dummy fillers joined to said wedge shaped non-arcuate portions of said rotor so as to form the remaining part of the circumference of the rotor; and stator coils disposed around said rotor.
Claim 2
Dependent Claim
175 words
A generator device having a reluctance generator drivable by exhaust energy from an internal combustion engine, comprising: an impeller shaft rotatable by the exhaust energy from the internal combustion engine; a rotor shaft integrally construed with said impeller shaft; a circular rotor having a circumference and a substantially I-shaped solid cross sectional part with arcuate portions forming a part of the circumference and wedge shaped non-arcuate portions mounted on said rotor shaft and having a magnetic reluctance in a first direction normal to an axis of said rotor shaft and a smaller magnetic reluctance in a second direction normal to said first direction and to the axis of said rotor shaft, said rotor having a thickness in the first direction across said wedge shaped non-arcuate portions being substantially the same as a thickness of said arcuate portions in the first direction; wedge shaped dummy fillers joined to said wedge shaped non-arcuate portions of said rotor so as to form the remaining part of the circumference of the rotor; and stator coils disposed around said rotor.
Claim 3
Dependent Claim
13 words
A generator device according to claim 1, wherein said rotor comprises silicon steel.
Claim 4
Dependent Claim
16 words
A generator device according to claim 1, wherein said dummy fillers are of hard synthetic resin.
Claim 5
Dependent Claim
26 words
A generator device according to claim 1, including a layer of carbon fibers covering an entire outer circumferential surface of said rotor, including said arcuate portions.
Claim 6
Dependent Claim
25 words
A generator device according to claim 1, including a nonmagnetic metal sheet covering an entire outer circumferential surface of said rotor, including said arcuate portions.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-04 | 1993-03-06 | 1993-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-04 | 1997-03-06 | 1997-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-04 | 2001-03-06 | 2001-09-05 | $7700.00 | Window Closed / Lapsed |