US3564307A — Rotary electric ac generator utilizing the magnet…

Claim 1

Independent Claim 155 words

A generator comprising at least one pair of rotating discs composed of an inhomogeneous hard superconducting material and kept at a superconducting state, said discs being provided with a plurality of slots along the circumference thereof and mounted on a rotor axis in parallel with each other in such a manner that the slots of one of said discs are opposed by the slots of the other, said discs having such a magnetic shielding property that they do not allow passage of magnetic flux at portions other than the slot portions, an armature coil disposed in the space between said parallel discs, said coil being disposed at a position at which it is interlinked by magnetic flux passing through the slot portions so as to thereby generate a voltage corresponding to the interlinking magnetic fLux, and field means for externally applying a magnetic field to said discs in the axial direction of said rotator axis.

Claim 2

Dependent Claim 155 words

A generator comprising at least one pair of rotating discs composed of an inhomogeneous hard superconducting material and kept at a superconducting state, said discs being provided with a plurality of slots along the circumference thereof and mounted on a rotor axis in parallel with each other in such a manner that the slots of one of said discs are opposed by the slots of the other, said discs having such a magnetic shielding property that they do not allow passage of magnetic flux at portions other than the slot portions, an armature coil disposed in the space between said parallel discs, said coil being disposed at a position at which it is interlinked by magnetic flux passing through the slot portions so as to thereby generate a voltage corresponding to the interlinking magnetic fLux, and field means for externally applying a magnetic field to said discs in the axial direction of said rotator axis.

Claim 3

Dependent Claim 77 words

A generator as claimed in claim 1, in which a plurality of said discs are parallelly disposed and are each provided with four keyhole-shaped slots which are spaced by pi /2 radians from each other, and six said coils are disposed between the adjacent discs in equally spaced relation form each other, those coils spaced by 2/3 pi radians being connected in series with each other to constitute phase I, phase II and phase III windings, respectively.

Claim 4

Dependent Claim 90 words

A generator as claimed in claim 1, in which four said discs are parallelly disposed and are each provided with three keyhole-shaped slots which are spaced 2/3 pi radians from each other, and three said coils forming a set are disposed between the adjacent discs and are spaced by 2/3 pi radians from each other, the respective sets of three coils constituting phase I, phase II and phase III windings, and any one coil in each phase being spaced by 2/9 pi radians from the corresponding coil in other phase.

Claim 5

Dependent Claim 150 words

A generator comprising at least one pair of rotating discs composed of an electrical insulator, a plurality of magnetic poles provided along the circumference of said insulator discs, said magnetic poles being formed by boring portions of said discs and embedding pieces of an inhomogeneous hard superconducting material in the bored portions, said discs being mounted on a rotor axis in parallel with each other in such a manner that the magnetic poles of one of said discs are opposed by the magnetic poles of the other, said discs being kept at a superconducting state so as to entrap a magnetic field between the opposite magnetic poles, and an armature coil disposed in the space between said discs, said coil being disposed at a position at which it is interlinked by the magnetic field between said electrodes so as to thereby generate a voltage corresponding to the interlinking magnetic flux.

Claim 6

Dependent Claim 150 words

A generator comprising at least one pair of rotating discs composed of an electrical insulator, a plurality of magnetic poles provided along the circumference of said insulator discs, said magnetic poles being formed by boring portions of said discs and embedding pieces of an inhomogeneous hard superconducting material in the bored portions, said discs being mounted on a rotor axis in parallel with each other in such a manner that the magnetic poles of one of said discs are opposed by the magnetic poles of the other, said discs being kept at a superconducting state so as to entrap a magnetic field between the opposite magnetic poles, and an armature coil disposed in the space between said discs, said coil being disposed at a position at which it is interlinked by the magnetic field between said electrodes so as to thereby generate a voltage corresponding to the interlinking magnetic flux.

Claim 7

Dependent Claim 22 words

A generator as claimed in claim 4, in which said magnetic poles of an inhomogeneous hard superconducting material are cylindrical in shape.

Claim 8

Dependent Claim 154 words

A generator comprising at least one pair of rotating discs composed of an electrical insulator, a plurality of magnetic poles provided along the circumference of said insulator discs, said magnetic poles being formed by boring portions of said discs and embedding pieces of an inhomogeneous hard superconducting material in the bored portions, said discs being mounted on a rotor axis in parallel with each other in such a manner that the magnetic poles of one of said discs are opposed by the magnetic poles of the other, said discs being kept at a superconducting state so as to shield a magnetic field, and an armature coil disposed in the space between said discs, said coil being disposed at a position at which it is interlinked by magnetic flux passing through the portions of said discs other than the magnetic poles portions so as to thereby generate a voltage corresponding to the interlinking magnetic flux.

Claim 9

Dependent Claim 154 words

A generator comprising at least one pair of rotating discs composed of an electrical insulator, a plurality of magnetic poles provided along the circumference of said insulator discs, said magnetic poles being formed by boring portions of said discs and embedding pieces of an inhomogeneous hard superconducting material in the bored portions, said discs being mounted on a rotor axis in parallel with each other in such a manner that the magnetic poles of one of said discs are opposed by the magnetic poles of the other, said discs being kept at a superconducting state so as to shield a magnetic field, and an armature coil disposed in the space between said discs, said coil being disposed at a position at which it is interlinked by magnetic flux passing through the portions of said discs other than the magnetic poles portions so as to thereby generate a voltage corresponding to the interlinking magnetic flux.

Claim 10

Dependent Claim 32 words

A generator as claimed in claim 6, in which said magnetic poles and armature coil have a sectoral shape so that a rectangular wave voltage can be obtained from said armature coil.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1974-02-15	1974-08-17	1975-02-16	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1978-02-15	1978-08-17	1979-02-16	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1982-02-15	1982-08-17	1983-02-16	$7700.00	Window Closed / Lapsed

Rotary electric ac generator utilizing the magnetic shielding and trapping by superconducting plates

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