US4278905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for supporting a stator winding in a superconductive generator
Assignee: Electric Power Research Institute
•
Filing: 1979-02-16
•
Granted: 1981-07-14
•
Expires: 1999-02-16
Abstract
Abstract An apparatus for supporting a stator winding in a superconductive generator. The apparatus includes a plurality of integral stator bars positioned in the air-gap between the yoke and the rotor and a plurality of non-conductive supporting teeth interspaced between the stator bars. The supporting teeth are rigidly attached to the yoke of the generator and are engaged by a plurality of wedge members. The wedge members and the supporting teeth secure the stator bars in a rigid supporting arch.
Inventors
- 👤 Madabushi V. K. Chari
- 👤 Donald W. Jones
- 👤 Evangelos T. Laskaris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:10
CPC Classifications
H; H02; H02K; H02K55/00; H02K55/02; H02K55/04; H02K3/00; H02K3/46; Y; Y02; Y02E; Y02E40/00; Y02E40/60; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/876; Y10S505/877
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
136 words
An apparatus for supporting a stator winding in a superconductive generator, said generator having a yoke and a rotor comprising: (a) a plurality of integral stator bars positioned between the yoke and the rotor in a superconductive generator; (b) a plurality of integral stator bars positioned within the yoke of the superconductive generator, said bars being for generating an electrical output current in combination with the stator bars located between the yoke and the rotor; (c) a plurality of non-conductive supporting teeth interspaced between the stator bars located between the yoke and the rotor, said teeth being rigidly attached to the yoke of the generator; and (d) a plurality of wedge members for engaging the supporting teeth and for rigidly securing the stator bars located between the yoke and the rotor during operation of the generator.
Claim 2
Independent Claim
136 words
An apparatus for supporting a stator winding in a superconductive generator, said generator having a yoke and a rotor comprising: (a) a plurality of integral stator bars positioned between the yoke and the rotor in a superconductive generator; (b) a plurality of integral stator bars positioned within the yoke of the superconductive generator, said bars being for generating an electrical output current in combination with the stator bars located between the yoke and the rotor; (c) a plurality of non-conductive supporting teeth interspaced between the stator bars located between the yoke and the rotor, said teeth being rigidly attached to the yoke of the generator; and (d) a plurality of wedge members for engaging the supporting teeth and for rigidly securing the stator bars located between the yoke and the rotor during operation of the generator.
Claim 3
Dependent Claim
30 words
An apparatus as in claim 1 in which the stator bars located between the yoke and the rotor are circumferentially displaced with respect to the stator bars in the yoke.
Claim 4
Dependent Claim
47 words
An apparatus as in claim 1 in which the supporting teeth lock in the yoke the stator bars located in the yoke and in which the wedge members engge the teeth and pre-load the teeth in compression so that a supporting arch is formed around the rotor.
Claim 5
Dependent Claim
84 words
An apparatus as in claim 1 wherein the supporting teeth have side walls, a mortise end located near the rotor and a tenon end which engages the yoke and wherein a plurality of said wedge members engages the side walls of the supporting teeth and the stator bars located between the yoke and the rotor so that a rigid supporting arch for the stator bars is formed around the rotor and any bending of the teeth with respect to the yoke is substantially eliminated.
Claim 6
Dependent Claim
19 words
An apparatus as in claim 1 in which each stator bar is electrically isolated by a ground wall insulator.
References Cited (Backward Citations)
US2451633A
Cited
US2705292A
Cited
US2990487A
Cited
GB963790A
Cited
US3405297A
Cited
US3560776A
Cited
US3644766A
Cited
US3708707A
Cited
US3934163A
Cited
US3955271A
Cited
US4068142A
Cited
US4137471A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-13 | 1985-01-12 | 1985-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-13 | 1989-01-12 | 1989-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-13 | 1993-01-12 | 1993-07-14 | $7700.00 | Window Closed / Lapsed |