Patent US3555327A successfully refreshed from Google Patents.
US3555327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanent magnet alternator with regulating means
Assignee: Ambac Industries Inc
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Filing: 1969-03-25
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Granted: 1971-01-12
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Expires: 1989-03-25
Abstract
Abstract An alternator with permanent magnet rotor having pole pieces is provided which has an output winding supported by a stator. At least one coil is employed which has a magnetic circuit including at least one of the pole pieces but independent of the permanent magnet so that the magnetic flux associated with the coil effects the magnetic flux from the permanent magnet passing through the one of the pole pieces.
Inventors
- 👤 Stanley M Terry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:01
CPC Classifications
H; H02; H02K; H02K21/00; H02K21/02; H02K21/04; H02K21/046; H02K21/048; H02K5/00; H02K5/04; H02K5/15
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
190 words
An alternator comprising: a stator providing a housing including a core of magnetic material and at least one output winding positioned thereon; a rotor rotatable relative to the stator, the stator housing supporting the rotor therein; a pair of spaced pole pieces providing pole fAces supported by the rotor; a permanent magnet supported by the rotor to produce magnetic flux in the pole pieces and adapted to polarize the pair of pole pieces with opposite polarities; said at least one output winding being cooperable with the magnetic flux from the pole pieces to generate voltage pulses of alternating opposite polarity; a coil support member supported by the stator adjacent one of the pair of pole pieces; a coil supported by the coil support member and adapted to be connected to a direct current source of power; and a magnetic circuit for the coil independent of the permanent magnet and including the one of the pair of pole pieces and at least a portion of the stator housing, the coil being arranged to have its magnetic flux effect the magnetic flux passing through the one of the pair of pole pieces.
Claim 2
Dependent Claim
190 words
An alternator comprising: a stator providing a housing including a core of magnetic material and at least one output winding positioned thereon; a rotor rotatable relative to the stator, the stator housing supporting the rotor therein; a pair of spaced pole pieces providing pole fAces supported by the rotor; a permanent magnet supported by the rotor to produce magnetic flux in the pole pieces and adapted to polarize the pair of pole pieces with opposite polarities; said at least one output winding being cooperable with the magnetic flux from the pole pieces to generate voltage pulses of alternating opposite polarity; a coil support member supported by the stator adjacent one of the pair of pole pieces; a coil supported by the coil support member and adapted to be connected to a direct current source of power; and a magnetic circuit for the coil independent of the permanent magnet and including the one of the pair of pole pieces and at least a portion of the stator housing, the coil being arranged to have its magnetic flux effect the magnetic flux passing through the one of the pair of pole pieces.
Claim 3
Dependent Claim
38 words
The alternator of claim 1 in which the pole pieces are axially spaced along the rotor with the permanent magnet therebetween, and the coil support member is supported between the one of the pole pieces and the housing.
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |