US4651117A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Superconducting magnet with shielding apparatus
Assignee: Mitsubishi Electric Corp
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Filing: 1985-10-30
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Granted: 1987-03-17
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Expires: 2005-10-30
Abstract
Abstract A superconducting magnet with an auxiliary heat shield for providing additional shielding of a superconducting coil against heat radiation. The auxiliary heat shield is disposed between a superconducting coil bonded to a cylindrical coil care and a main heat shield on the radially inner side of the superconducting coil.
Inventors
- 👤 Takeo Kawaguchi
- 👤 Takashi Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:57
CPC Classifications
H; H01; H01F; H01F6/00; H01F6/04; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/879; Y10S505/884; Y10S505/885
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
97 words
A superconducting magnet comprising; a superconducting coil, cooling means disposed on an outer circumference of said coil for cooling said coil to a cryogenic temperature; bonding means for bonding said coil and said cooling means to establish a high thermal conductivity therebetween; main shield surrounding said cooling means and said coil for shielding them against radiant heat from the exterior; auxiliary shield disposed between said coil means and said main shield opposite to said cooling means with regard to said coil for additionally shielding said coil against radiant heat; and a vacuum vessel enclosing said main shield.
Claim 2
Dependent Claim
97 words
A superconducting magnet comprising; a superconducting coil, cooling means disposed on an outer circumference of said coil for cooling said coil to a cryogenic temperature; bonding means for bonding said coil and said cooling means to establish a high thermal conductivity therebetween; main shield surrounding said cooling means and said coil for shielding them against radiant heat from the exterior; auxiliary shield disposed between said coil means and said main shield opposite to said cooling means with regard to said coil for additionally shielding said coil against radiant heat; and a vacuum vessel enclosing said main shield.
Claim 3
Dependent Claim
23 words
A superconducting magnet apparatus as claimed in claim 1, characterized in that said auxiliary shield has a U-shaped cross section radially outwardly open.
References Cited (Backward Citations)
US3428925A
Cited
US3671902A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-16 | 1990-09-15 | 1991-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-16 | 1994-09-15 | 1995-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-16 | 1998-09-15 | 1999-03-17 | $7700.00 | Window Closed / Lapsed |