US4439701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor of a superconductive rotary electric machine
Assignee: Mitsubishi Electric Corp
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Filing: 1982-05-24
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Granted: 1984-03-27
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Expires: 2002-05-24
Abstract
Abstract A rotor of a superconductive rotary electric machine is disclosed in which fillers are inserted between the superconductive magnetic field coils and a plurality of padding plates which cover the entire side face of the superconductive field coils so that all the turns of the superconductive magnetic field coils are firmly secured. The rotor therefore can be stably operated.
Inventors
- 👤 Kouichi Okamoto
- 👤 Masaki Sakuyama
- 👤 Tadatoshi Yamada
- 👤 Shiro Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:04
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
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
147 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 filler sheets against the side surfaces of said coil end portions on opposite sides of said gap, said sheets being an elastic material impregnated with an electrically insulating resin and having the side against the coil end portion conforming to the shape of the coil end portion; electrically insulating padding plate means applied over the electrically insulating filler sheets; and electrically insulating filler means filling the remainder of said gaps between said padding plate means.
Claim 2
Dependent Claim
147 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 filler sheets against the side surfaces of said coil end portions on opposite sides of said gap, said sheets being an elastic material impregnated with an electrically insulating resin and having the side against the coil end portion conforming to the shape of the coil end portion; electrically insulating padding plate means applied over the electrically insulating filler sheets; and electrically insulating filler means filling the remainder of said gaps between said padding plate means.
Claim 3
Dependent Claim
14 words
A rotor as claimed in claim 1 in which the elastic material is felt.
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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) | 1987-03-27 | 1987-09-26 | 1988-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-27 | 1991-09-26 | 1992-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-27 | 1995-09-26 | 1996-03-27 | $7700.00 | Window Closed / Lapsed |