US4755736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Generator system with integral permanent magnet generator exciter
Assignee: Sundstrand Corp
•
Filing: 1986-12-30
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Granted: 1988-07-05
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Expires: 2006-12-30
Abstract
Abstract A generator system having self-build-up characteristics with an integral permanent magnet generator exciter. A rotor shaft is journalled in a housing. A main stator is secured within the housing, and a rotating field is magnetically coupled to the main stator and secured to the rotor shaft for rotation therewith. An exciter field is secured within the housing, and an exciter armature is magnetically coupled to the exciter field and secured to the rotor shaft for rotation therewith. A plurality of permanent magnets are integrally secured to a radially inner periphery of the exciter field immediately adjacent a radially outer periphery of the exciter armature.
Inventors
- 👤 Theodore D. Fluegel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:39
CPC Classifications
H; H02; H02K; H02K21/00; H02K21/26; H02K21/28; H02K21/30; H02K19/00; H02K19/16; H02K19/38
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
103 words
A generator system having self-buildup characteristics with an integral PMG exciter, comprising: housing means; rotating means journaled in the housing means; a main stator secured within the housing; a rotating field magnetically coupled to the main stator and secured to the rotating means for rotation therewith; an exciter field secured within the housing; an exciter armature magnetically coupled to the exciter field and secured to the rotating means for rotation therewith; and permanent magnet means disposed about a radially inner periphery of the exciter field immediately adjacent a radially outer periphery of the exciter armature for interacting therewith to provide a magnetic circuit.
Claim 2
Dependent Claim
103 words
A generator system having self-buildup characteristics with an integral PMG exciter, comprising: housing means; rotating means journaled in the housing means; a main stator secured within the housing; a rotating field magnetically coupled to the main stator and secured to the rotating means for rotation therewith; an exciter field secured within the housing; an exciter armature magnetically coupled to the exciter field and secured to the rotating means for rotation therewith; and permanent magnet means disposed about a radially inner periphery of the exciter field immediately adjacent a radially outer periphery of the exciter armature for interacting therewith to provide a magnetic circuit.
Claim 3
Dependent Claim
22 words
The generator system of claim 1 wherein said permanent means are mounted integral with inner ends of poles of exciter field poles.
Claim 4
Dependent Claim
103 words
A generator system having self-buildup characteristics with an integral PMG exciter, comprising: housing means; a rotor shaft journaled in the housing means; a main stator secured within the housing and magnetically coupled to a rotating field secured to the rotor shaft at one axial location therealong for rotation therewith; an exciter field secured within the housing and magnetically coupled to an exciter armature secured to the rotor shaft for rotation therewith at a second axial location therealong; and a plurality of permanent magnets disposed about a radially inner periphery of the exciter field immediately adjacent a radially outer periphery of the exciter armature.
Claim 5
Dependent Claim
103 words
A generator system having self-buildup characteristics with an integral PMG exciter, comprising: housing means; a rotor shaft journaled in the housing means; a main stator secured within the housing and magnetically coupled to a rotating field secured to the rotor shaft at one axial location therealong for rotation therewith; an exciter field secured within the housing and magnetically coupled to an exciter armature secured to the rotor shaft for rotation therewith at a second axial location therealong; and a plurality of permanent magnets disposed about a radially inner periphery of the exciter field immediately adjacent a radially outer periphery of the exciter armature.
Claim 6
Dependent Claim
26 words
The generator system of claim 3 wherein the exciter field, exciter armature and the permanent magnets are located immediately adjacent the main stator and rotating field.
Claim 7
Dependent Claim
22 words
The generator system of claim 3 wherein said permanent magnets are mounted integral with inner ends of poles of the exciter field.
Claim 8
Dependent Claim
114 words
A generator system having self-buildup characteristics with an integral PMG exciter, comprising: housing means; rotating means journaled in the housing means; a main stator and rotating field set with the main stator secured within the housing and the rotating field secured to the rotating means at one axial location therealong; an exciter field and exciter armature set with the exciter field secured within the housing and the exciter armature secured to the rotating means at a second axial location therealong; and a plurality of permanent magnets disposed about a radially inner periphery of the exciter field immediately adjacent a radially outer periphery of the exciter armature for interacting therewith to provide a magnetic circuit.
Claim 9
Dependent Claim
114 words
A generator system having self-buildup characteristics with an integral PMG exciter, comprising: housing means; rotating means journaled in the housing means; a main stator and rotating field set with the main stator secured within the housing and the rotating field secured to the rotating means at one axial location therealong; an exciter field and exciter armature set with the exciter field secured within the housing and the exciter armature secured to the rotating means at a second axial location therealong; and a plurality of permanent magnets disposed about a radially inner periphery of the exciter field immediately adjacent a radially outer periphery of the exciter armature for interacting therewith to provide a magnetic circuit.
Claim 10
Dependent Claim
22 words
The generator system of claim 6 wherein said permanent magnets are mounted integral with inner ends of poles of the exciter field.
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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) | 1991-07-05 | 1992-01-04 | 1992-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-05 | 1996-01-04 | 1996-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-05 | 2000-01-04 | 2000-07-05 | $7700.00 | Window Closed / Lapsed |