US4965247A — Superconducting coil and a method for producing t…

Claim 1

Independent Claim 138 words

A superconducting coil comprising a support and at least one ring-shaped or spiral turn of a superconductor, wherein said at least one ring-shaped or spiral turn is previously cut on an outer surface of said support so that a superconducting material is received on a groove, which is composed of a compound oxide represented by the formula: (α.sub.1-x β.sub.x)γ.sub.y O.sub.z in which α stands for an element selected from group IIa of the Periodic Table, β stands for an element selected from group IIIa of the Periodic Table and an element γ stands for an element selected from the group comprising group Ib, IIb, IIIb, IVb and VIII of the Periodic Table, and x, y, and z are numbers each having a range of 0.1≦x≦0.9, 1.0≦y≦4.0 and 1≦z≦5, respectively and is supported on a surface of said support.

Claim 2

Dependent Claim 138 words

A superconducting coil comprising a support and at least one ring-shaped or spiral turn of a superconductor, wherein said at least one ring-shaped or spiral turn is previously cut on an outer surface of said support so that a superconducting material is received on a groove, which is composed of a compound oxide represented by the formula: (α.sub.1-x β.sub.x)γ.sub.y O.sub.z in which α stands for an element selected from group IIa of the Periodic Table, β stands for an element selected from group IIIa of the Periodic Table and an element γ stands for an element selected from the group comprising group Ib, IIb, IIIb, IVb and VIII of the Periodic Table, and x, y, and z are numbers each having a range of 0.1≦x≦0.9, 1.0≦y≦4.0 and 1≦z≦5, respectively and is supported on a surface of said support.

Claim 3

Dependent Claim 16 words

A superconducting coil set forth in claim 1, wherein said support is made of an insulator.

Claim 4

Dependent Claim 16 words

A superconducting coil set forth in claim 1, wherein said support is a hollow cylindrical body.

Claim 5

Dependent Claim 39 words

A superconducting coil set forth in claim 1, wherein said support is made of a material selected from the group comprising silicon, MgO, SrTiO 3 , Al 2 O 3 , sapphire, SiO 2 , quartz, YSZ and ZnO.

Claim 6

Dependent Claim 59 words

A superconducting coil set forth in claim 1, wherein said superconducting material is a compound oxide represented by the general formula: Ln.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-δ in which, Ln stands for an element selected from the group comprising Y, La, Gd, Ho, Er, Tm, Yb, Nd, Sm, Eu and Lu, δ is a number which satisfies a range of 0<δ<1.

Claim 7

Dependent Claim 120 words

A superconducting coil comprising a support and at least one-ring-shaped or spiral turn of a superconductor, wherein said at least one ring-shaped or spiral turn is previously cut on an outer surface of said support so that a superconducting material is received on a groove, which is composed of a compound oxide represented by the general formula: Θ.sub.4 (Φ.sub.1-q,Ca.sub.q).sub.m Cu.sub.n O.sub.p+r in which Θ stands for Bi or Tl, Φ stands for Sr when Θ is Bi and stands for Ba when Θ is Tl, m and n are numbers each satisfying ranges of 6≦m≦10 and 4≦n≦8 respectively, p=(6+m+n), q is a number which satisfies a range of 0<q<1, and r is a number which satisfies a range of -2≦r≦+2.

Claim 8

Dependent Claim 120 words

A superconducting coil comprising a support and at least one-ring-shaped or spiral turn of a superconductor, wherein said at least one ring-shaped or spiral turn is previously cut on an outer surface of said support so that a superconducting material is received on a groove, which is composed of a compound oxide represented by the general formula: Θ.sub.4 (Φ.sub.1-q,Ca.sub.q).sub.m Cu.sub.n O.sub.p+r in which Θ stands for Bi or Tl, Φ stands for Sr when Θ is Bi and stands for Ba when Θ is Tl, m and n are numbers each satisfying ranges of 6≦m≦10 and 4≦n≦8 respectively, p=(6+m+n), q is a number which satisfies a range of 0<q<1, and r is a number which satisfies a range of -2≦r≦+2.

Claim 9

Dependent Claim 91 words

A superconducting coil set forth in claim 6, wherein said superconductor is a compound oxide represented by the formula: (α.sub.1-x β.sub.x)γ.sub.y O.sub.z in which α stands for an element selected from group IIa of the Periodic Table, β stands for an element selected from group IIIa of the Periodic Table and an element γ stands for an element selected from the group comprising group Ib, IIb, IIIb, IVb and VIII of the Periodic Table, and x, y and z are numbers each having a range of 0.1≦x≦0.9, 1.0≦y≦4.0 and 1≦z≦5 respectively.

Claim 10

Dependent Claim 58 words

A superconducting coil set forth in claim 7, wherein said superconductor is a compound oxide represented by the general formula: Ln.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7-δ in which, Ln stands for an element selected from the group comprising Y, La, Gd, Ho, Er, Tm, Yb, Nd, Sm, Eu and Lu, δ is a number which satisfies a range of 0<δ<1.

Claim 11

Independent Claim 40 words

A method for producing a superconducting coil, comprising the steps of placing a superconducting material on a surface of a support, and then heating the superconducting material to a temperature at which the superconducting material is sintered to a superconductor.

Claim 12

Independent Claim 40 words

A method for producing a superconducting coil, comprising the steps of placing a superconducting material on a surface of a support, and then heating the superconducting material to a temperature at which the superconducting material is sintered to a superconductor.

Claim 13

Dependent Claim 27 words

A method set forth in claim 9, wherein said superconducting material is placed in a shape of at least one ring-shaped or spiral turn of a coil.

Claim 14

Dependent Claim 60 words

A method set forth in claim 9, wherein a whole surface of said support is first covered with said superconducting material to form a continuous layer of said superconducting material on said support, and then a predetermined portion of said continuous layer of said superconducting material is removed to leave at least one ring-shaped or spiral turn on said support.

Claim 15

Dependent Claim 15 words

A method set forth in claim 9, wherein said support is made of an insulator.

Claim 16

Dependent Claim 15 words

A method set forth in claim 9, wherein said support is a hollow cylindrical body.

Claim 17

Dependent Claim 38 words

A method set forth in claim 9, wherein said support is made of a material selected from the group comprising silicon, MgO, SrTiO 3 , Al 2 O 3 , sapphire, SiO 2 , quartz, YSZ and ZnO.

Claim 18

Dependent Claim 30 words

A method set forth in claim 9, wherein said support has a ring-shaped or spiral groove on its outer surface so that said superconducting material is received in said groove.

Claim 19

Dependent Claim 23 words

A method set forth in claim 9, wherein said superconducting material is a paste composed of a superconducting compound oxide and a binder.

Claim 20

Dependent Claim 28 words

A method set forth in claim 9, wherein said superconducting material is deposited on said support by a physical vapour deposition technique or a chemical vapour deposition technique.

Claim 21

Dependent Claim 84 words

A superconducting coil set forth in claim 9, wherein said superconducting material is a compound oxide represented by the general formula: Θ.sub.4 (Φ.sub.1-q,Ca.sub.q).sub.m Cu.sub.n O.sub.p+r in which Θ stands for Bi or Tl, Φ stands for Sr when Θ is Bi and stands for Ba when Θ is Tl, m and n are numbers each satisfying ranges of 6≦m≦10 and 4≦n≦8 respectively, p=(6+m+n), q is a number which satisfies a range of 0<q<1, and r is a number which satisfies a range of -2≦r≦+2.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1993-10-22	1994-04-23	1994-10-23	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1997-10-22	1998-04-23	1998-10-23	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2001-10-22	2002-04-23	2002-10-23	$7700.00	Window Closed / Lapsed

Superconducting coil and a method for producing the same

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