Patent US4442369A successfully refreshed from Google Patents.
US4442369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor of a superconductive rotary electric machine
Assignee: Mitsubishi Electric Corp
•
Filing: 1982-06-15
•
Granted: 1984-04-10
•
Expires: 2002-06-15
Abstract
Abstract The present invention consists in that insulating fillers on the sides of superconductive field coils disposed on a coil-carrying shaft in the rotor of a superconductive rotary electric machine are separated into padding plates mounted so as to cover all the sides of the superconductive field coils, and the other portions, thereby to prevent the damage of the insulation between the turns of the field coils and to firmly fix the field coils.
Inventors
- 👤 Kouichi Okamoto
- 👤 Masaki Sakuyama
- 👤 Mitsuo Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:43
CPC Classifications
H; H02; H02K; H02K55/00; H02K55/02; H02K55/04; H02K3/00; H02K3/46; H02K3/50; H02K3/51; Y; Y02; Y02E; Y02E40/00; Y02E40/60; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/876; Y10S505/877
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A rotor for a superconductive rotary electric machine, comprising: a coil carrying shaft; a plurality of superconductive magnetic field coil means mounted on said coil carrying shaft and having coil end portions which are curved along the circumference of an end portion of the coil carrying shaft, said coil end portions being spaced in the direction of the length of said shaft to define gaps between the coil end portions; electrically insulating padding plate means positioned against the side surfaces of said coil end portions on opposite sides of said gaps; and electrically insulating filler means filling the remainder of said gaps between said padding plate means, said filler means being a pair of filler portions which have a cross-sectional shape of complementary wedges and filling the space in each gap between the padding plate means.
Claim 2
Dependent Claim
136 words
A rotor for a superconductive rotary electric machine, comprising: a coil carrying shaft; a plurality of superconductive magnetic field coil means mounted on said coil carrying shaft and having coil end portions which are curved along the circumference of an end portion of the coil carrying shaft, said coil end portions being spaced in the direction of the length of said shaft to define gaps between the coil end portions; electrically insulating padding plate means positioned against the side surfaces of said coil end portions on opposite sides of said gaps; and electrically insulating filler means filling the remainder of said gaps between said padding plate means, said filler means being a pair of filler portions which have a cross-sectional shape of complementary wedges and filling the space in each gap between the padding plate means.
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) | 1987-04-10 | 1987-10-10 | 1988-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-10 | 1991-10-10 | 1992-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-10 | 1995-10-10 | 1996-04-10 | $7700.00 | Window Closed / Lapsed |