Induction brake or clutch

Claim 2

An electrical induction device comprising: a fixed first member, a second member mounted on a rotatable shaft for rotation relative to said first member in close spaced relationship thereto, said first member including a plurality of poles and said second member including means for causing an alternating flux field in said poles when said members rotate relative to each other, said second member means including a plurality of circumferentially spaced, wafer-shaped, permanent magnets each having a pair of pole surfaces, ferromagnetic pole shoes having inner and outer ends disposed intermediate said pole surfaces, said magnets being magnetized in the direction of their thin dimension with adjacent pole surfaces having the same polarity so that the outer ends of said pole shoes define a second member circumference comprised of magnetic poles of alternating polarity, and said inner ends of said pole shoes including means for securing said pole shoes to said shaft and said outer ends of said pole shoes having short-circuit windings thereon.

Claim 3

a rotor adapter to be driven and having: a. a first set of poles including electrical windings; b. a second set of poles with electrical windings thereon electrically connected to said rotor first set windings; 3. a. all of said sets being arranged in an annulus each coaxial with the other; b. said stator and rotor first sets being in magnetically coupled relationship and said stator and rotor second sets being in magnetically coupled relationship, said rotor first set being comprised of a plurality of circumferentially spaced pole shoes, a magnet in the space between each shoe, each having a circumferentially extending axis of magnetization, alternate magnets being permanent with like magnetic pOlarity, the remaining magnets each including one of said windings on a ferromagnetic core and with like magnetic polarity to each other but opposite to said permanent magnets, said magnets and pole shoes forming a closed magnetic loop whereby when said windings are energized, said pole shoes have alternate magnetic polarity with a flux equal to the sum of the permanent and electromagnets and when unenergized, zero flux.

Claim 4

a rotor adapter to be driven and having: a. a first set of poles including electrical windings; b. a second set of poles with electrical windings thereon electrically connected to said rotor first set windings; 3. a. all of said sets being arranged in an annulus each coaxial with the other; b. said stator and rotor first sets being in magnetically coupled relationship and said stator and rotor second sets being in magnetically coupled relationship, said rotor first set being comprised of a plurality of circumferentially spaced pole shoes, a magnet in the space between each shoe, each having a circumferentially extending axis of magnetization, alternate magnets being permanent with like magnetic pOlarity, the remaining magnets each including one of said windings on a ferromagnetic core and with like magnetic polarity to each other but opposite to said permanent magnets, said magnets and pole shoes forming a closed magnetic loop whereby when said windings are energized, said pole shoes have alternate magnetic polarity with a flux equal to the sum of the permanent and electromagnets and when unenergized, zero flux.

Claim 5

An electrical induction brake or clutch comprising: a fixed first member, a second member mounted on a rotatable shaft for rotation relative to said first member in spaced-apart relationship thereto, said first member including a plurality of poles, said second member including permanent magnet means for causing an alternating flux field in said poles, the poles of said first member being arranged in at least two relatively movable pole rings in axially spaced relationship, and means for displacing said rings circumferentially relative to each other at least one pole pitch.

Claim 6

An electrical induction brake or clutch comprising: a fixed first member, a second member mounted on a rotatable shaft for rotation relative to said first member in spaced-apart relationship thereto, said first member including a plurality of poles, said second member including permanent magnet means for causing an alternating flux field in said poles, the poles of said first member being arranged in at least two relatively movable pole rings in axially spaced relationship, and means for displacing said rings circumferentially relative to each other at least one pole pitch.

Claim 7

An electrical induction device comprising: a fixed first member, a second member mounted on a rotatable shaft for rotation relative to said first member in spaced-apart relationship thereto, said first member including a plurality of poles, said second member including means for causing an alternating flux field in said poles when said members rotate relative to each other, said second member including an exciting dynamo for producing an alternating exciting current, said exciting dynamo having an induction winding in electrical connection through at least one rectifier with said second member flux field causing means, said exciting dynamo including a rotor and a stator, said stator having at least two relatively circumferentially movable pole rings each including permanently magnetic material and a plurality of poles of the same pole pitch and means for displacing one of said pole rings relative to the other up to at least one pole pitch, whereby the exciting current may be adjusted.

Claim 8

An electrical induction device comprising: a fixed first member, a second member mounted on a rotatable shaft for rotation relative to said first member in spaced-apart relationship thereto, said first member including a plurality of poles, said second member including means for causing an alternating flux field in said poles when said members rotate relative to each other, said second member including an exciting dynamo for producing an alternating exciting current, said exciting dynamo having an induction winding in electrical connection through at least one rectifier with said second member flux field causing means, said exciting dynamo including a rotor and a stator, said stator having at least two relatively circumferentially movable pole rings each including permanently magnetic material and a plurality of poles of the same pole pitch and means for displacing one of said pole rings relative to the other up to at least one pole pitch, whereby the exciting current may be adjusted.

Claim 9

The device defined in claim 3 wherein said exciting winding defines a rotor and said dynamo further includes means for electromagnetically exciting said stator.

Claim 10

An electrical induction device comprising: first and second members mounted for relative rotation in spaced-apart relationship; said first member including a plurality of poles having windings, said second member including a plurality of poles and permanent magnet means for causing alternating flux fields therein, the poles of one of said members being in at least two axially adjacent, relatively circumferentially adjustable rings, and means for adjusting said rings at least one pole pitch relatiVe to each other.

Claim 11

An electrical induction device comprising: first and second members mounted for relative rotation in spaced-apart relationship; said first member including a plurality of poles having windings, said second member including a plurality of poles and permanent magnet means for causing alternating flux fields therein, the poles of one of said members being in at least two axially adjacent, relatively circumferentially adjustable rings, and means for adjusting said rings at least one pole pitch relatiVe to each other.

Claim 12

An adjustable electrical induction device comprising: a first member defining an inductor body having a plurality of circumferentially-spaced permanent magnets thereon positioned to provide a plurality of circumferentially-spaced inductor body permanent magnet poles of alternating polarity, a second member defining an induction body having a plurality of circumferentially-spaced induction body poles, windings surrounding said induction body poles, one of said members being rotatable relative to the other of said members about an axis, said permanent magnet poles and said induction body poles being positioned in closely spaced relationship radially of said axis, said permanent magnet poles defining inducing means for inducing alternating current in said windings during rotation of said one member relative to said other member, said other member having said poles thereof circumferentially divided radially of said axis into at least two pole members spaced axially of said axis, adjustment means for angularly adjusting at least one of said pole members relative to the other of said pole members about said axis during rotation of said one member relative to said other member between a position wherein like poles on said pole members are aligned axially of said axis and a position wherein unlike poles on said pole members are aligned axially of said axis for varying the resultant value of said alternating current between maximum and zero values, said permenent magnet poles being defined by ferromagnetic pole shoes, said magnets having opposite faces and being positioned between said pole shoes, said magnets being magnetized across said opposite faces and being alternately reversely positioned so that like poles of said magnets face opposite sides of each said pole shoes, said pole shoes having outer ends, and short-circuit windings on said outer ends of said pole shoes.

Claim 13

An adjustable electrical induction device comprising: a first member defining an inductor body having a plurality of circumferentially-spaced permanent magnets thereon positioned to provide a plurality of circumferentially-spaced inductor body permanent magnet poles of alternating polarity, a second member defining an induction body having a plurality of circumferentially-spaced induction body poles, windings surrounding said induction body poles, one of said members being rotatable relative to the other of said members about an axis, said permanent magnet poles and said induction body poles being positioned in closely spaced relationship radially of said axis, said permanent magnet poles defining inducing means for inducing alternating current in said windings during rotation of said one member relative to said other member, said other member having said poles thereof circumferentially divided radially of said axis into at least two pole members spaced axially of said axis, adjustment means for angularly adjusting at least one of said pole members relative to the other of said pole members about said axis during rotation of said one member relative to said other member between a position wherein like poles on said pole members are aligned axially of said axis and a position wherein unlike poles on said pole members are aligned axially of said axis for varying the resultant value of said alternating current between maximum and zero values, said permenent magnet poles being defined by ferromagnetic pole shoes, said magnets having opposite faces and being positioned between said pole shoes, said magnets being magnetized across said opposite faces and being alternately reversely positioned so that like poles of said magnets face opposite sides of each said pole shoes, said pole shoes having outer ends, and short-circuit windings on said outer ends of said pole shoes.

Claim 14

An adjustable electrical induction device comprising: a first member defining an inductor body having a plurality of circumferentially spaced permanent magnets thereon positioned to provide a plurality of circumferentially spaced inductor body permanent magnet poles of alternating polarity, a second member defining an induction body having a plurality of circumferentially spaced induction body poles, windings surrounding said induction body poles, one of said members being rotatable relative to the other of said members about an axis, said permanent magnet poles and said induction body poles being positioned in closely spaced relationship radially of said axis, said permanent magnet poles defining inducing means for inducing alternating current in said windings during rotation of said one member relative to said other member, said other member having said poles thereof circumferentially divided radially of said axis into two pole members spaced axially of said axis, adjustment means for angularly adjusting at least one of said pole members relative to the other of said pole members about said axis during rotation of said one member relative to said other member between a position wherein like poles on said pole members are aligned axially of said axis and a position wherein unlike poles on said pole members are aligned axially of said axis for varying the resultant value of said alternating current between maximum and zero values, said inductor body and induction body cooperating to define an exciting dynamo for a variable magnetic torque coupling device including a rotor structure and a stator structure, one of said structures having an exciting winding connected through rectifier means to said windings on said induction body of said exciting dynamo, and excited windings on the other of said structures for cooperation with said exciting winding.

Claim 15

An adjustable electrical induction device comprising: a first member defining an inductor body having a plurality of circumferentially spaced permanent magnets thereon positioned to provide a plurality of circumferentially spaced inductor body permanent magnet poles of alternating polarity, a second member defining an induction body having a plurality of circumferentially spaced induction body poles, windings surrounding said induction body poles, one of said members being rotatable relative to the other of said members about an axis, said permanent magnet poles and said induction body poles being positioned in closely spaced relationship radially of said axis, said permanent magnet poles defining inducing means for inducing alternating current in said windings during rotation of said one member relative to said other member, said other member having said poles thereof circumferentially divided radially of said axis into two pole members spaced axially of said axis, adjustment means for angularly adjusting at least one of said pole members relative to the other of said pole members about said axis during rotation of said one member relative to said other member between a position wherein like poles on said pole members are aligned axially of said axis and a position wherein unlike poles on said pole members are aligned axially of said axis for varying the resultant value of said alternating current between maximum and zero values, said inductor body and induction body cooperating to define an exciting dynamo for a variable magnetic torque coupling device including a rotor structure and a stator structure, one of said structures having an exciting winding connected through rectifier means to said windings on said induction body of said exciting dynamo, and excited windings on the other of said structures for cooperation with said exciting winding.

Claim 16

The device of claim 7 wherein said inductor body and said stator structure are attached together as a unit and said induction body and said rotor structure are attached together as a unit.

Claim 17

An induction brake or clutch comprising: a rotor structure and a stator structure, one of said structures having exciting windings and the other of said structures having excited windings, an exciting dynamo positioned within said one of said structures and having dynamo windings in which alternating electrical current is induced, said dynamo windings energizing said exciting windings through rectifier means.

Claim 18

An induction brake or clutch comprising: a rotor structure and a stator structure, one of said structures having exciting windings and the other of said structures having excited windings, an exciting dynamo positioned within said one of said structures and having dynamo windings in which alternating electrical current is induced, said dynamo windings energizing said exciting windings through rectifier means.

Claim 19

The device of claim 9 wherein said one structure includes a plurality of circumferentially spaced pole shoes of alternating magnetic polarity, a plurality of permanent magnets having opposite pole surfaces, said permanent magnets being positioned with said pole surfaces disposed intermediate adjacent ones of said pole shoes, said exciting windings defining electro-magnetic means and being operatively associated with said permanent magnets for selectively regulating the magnetic field generated between adjacent ones of said pole shoes.

Claim 20

The device of claim 10 and further including a ferromagnetic member positioned between every other pair of said pole shoes, said permanent magnets being positioned between every remaining pair of said pole shoes with said opposite pole surfaces in contact with adjacent pole shoes whereby pole shoes of alternating polarity are produced.

Claim 21

The device of claim 11 wherein said exciting windings are on said ferromagnetic members and have a direction of winding which is the same for all of said pole shoes.

Claim 22

The device of claim 9 wherein said dynamo includes a dynamo rotor and a dynamo stator, said rotor structure and said dynamo structure being attached together as a unit, and said dynamo stator and said stator structure being attached together as a unit.

Claim 23

The device of claim 13 wherein said dynamo windings are on said dynamo rotor, said dynamo stator including a plurality of annular pole rings, each of said pole rings having a plurality of circumferentially spaced dynamo permanent magnets of alternating polarity, adjustment means for angularly adjusting at least one of said pole rings relative to the other of said pole rings between a position wherein opposite poles of said dynamo permanent magnets on adjacent ones of said pole rings are opposite one another and a position wherein like poles of said dynamo permanent magnets on adjacent ones of said pole rings are opposite one another for varying the value of alternating current induced in said dynamo rotor windings by said dynamo permanent magnets.

Claim 24

The device of claim 14 wherein said rotor structure includes a plurality of circumferentially spaced pole shoes of alternating magnetic polarity, a plurality of permanent magnets having opposite pole surfaces, said permanent magnets being positioned with said pole surfaces disposed intermediate adjacent ones of said pole shoes, said exciting windings defining electro-magnetic means and being operatively associated with said permanent magnets for selectively regulating the magnetic field generated between adjacent ones of said pole shoes.

Claim 25

A rotating electrical induction device comprising:

Claim 26

A rotating electrical induction device comprising:

Claim 27

The device of claim 16 wherein said electrical connection between said rotor windings includes an AC to DC rectifier.

Claim 28

The device of claim 17 wherein said stator second set includes two axially spaced rings of a plurality of spaced pole shoes and permanent magnets between said shoes of each ring polarized for magnetically energizing same with alternating magnetic polarity, said rings being relatively circumferentially adjustable whereby to vary the voltage induced in said rotor second set windings.