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US5233251A Expired / Lapsed US ⏱️ 0.0 years remaining

Electric motor with non-radial magnetic drive system

Assignee: Individual
•
Filing: 1991-12-02
•
Granted: 1993-08-03
•
Expires: 2011-12-02
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Abstract

Abstract A D.C. motor includes a rotor and a stator with chordally oriented electromagnetic units, with windings pulse energized to establish a rotary force on the rotor as a result of the non-radial orientation of the driving forces. Each electromagnetic unit including a pole is extended along a substantially chordal line of the motor. All rotor poles are connected to a shaft by a radial crank arm and may be integrally or separately formed. A sensor detects pole alignment to then pulse the windings, and generate opposing magnetic forces to rotate the rotor. The winding establish opposite polarity at the adjacent pole ends of aligned poles to drive the rotor. A D.C. motor connected to the rotor, or special internal poles may be provided to align the poles for starting the motor. A plurality of the motors mounted to a common shaft with the electromagnetic units in the adjacent motors offset from each other and sequentially pulsed to establish continuous rotation. A multiple section motor assembly provides a stepping motor with small individual steps. Various rotor and stator constructions with crank-like rotor pole units are disclosed.

Inventors

  • 👤 Conrad C. Nehmer

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 15:58
CPC Classifications
H; H02; H02K; H02K25/00

Claims Analysis

Total Claims: 19
Claim 1
Independent Claim 332 words
A direct current electric motor which is pulsed energized, comprising a rotor unit including an outer circular face and a supporting shaft member having an axis of rotation and with a plurality of circumferentially distributed magnetic rotor members, each of the said rotor members include a short radial connecting member projecting from said shaft member and the axis of rotation, an outer core pole member projecting outwardly at an angle from said connecting member, said pole member being coupled to said connecting member in a nonradial orientation and located on a chordal line within said circular face and with an outer end face within said circular face with respect to said shaft to create a crank drive construction, a magnetic unit associated with each of said rotor poles and selectively establishing a magnetic field with a predetermined outer pole and an opposite related inner pole, a stator unit coupled to said rotor and including a plurality of circumferentially distributed field magnetic units and each field magnetic unit including a stator pole oriented with respect to said rotor pole members for alignment with said rotor pole members, a magnetic unit associated with each of said stator poles and establishing a magnetic inner pole or the same polarity as the outer pole of said rotor poles, said stator poles having inner pole faces with a concave circular face of a radius substantially the same as said circular face of said rotor pole members and located to establish a small substantially constant air gap between said pole faces and at least one of said magnetic units including an electromagnetic units, and a control unit connected to said electromagnetic unit and operable to selectively establish direct current magnetization of the pole faces to have the same polarization with respect to the adjacent pole face of the aligned pole with the rotor poles and stator poles aligned, whereby said like polarization results in selective direct driving forces on said rotor as a result of said crank construction.
Claim 2
Dependent Claim 332 words
A direct current electric motor which is pulsed energized, comprising a rotor unit including an outer circular face and a supporting shaft member having an axis of rotation and with a plurality of circumferentially distributed magnetic rotor members, each of the said rotor members include a short radial connecting member projecting from said shaft member and the axis of rotation, an outer core pole member projecting outwardly at an angle from said connecting member, said pole member being coupled to said connecting member in a nonradial orientation and located on a chordal line within said circular face and with an outer end face within said circular face with respect to said shaft to create a crank drive construction, a magnetic unit associated with each of said rotor poles and selectively establishing a magnetic field with a predetermined outer pole and an opposite related inner pole, a stator unit coupled to said rotor and including a plurality of circumferentially distributed field magnetic units and each field magnetic unit including a stator pole oriented with respect to said rotor pole members for alignment with said rotor pole members, a magnetic unit associated with each of said stator poles and establishing a magnetic inner pole or the same polarity as the outer pole of said rotor poles, said stator poles having inner pole faces with a concave circular face of a radius substantially the same as said circular face of said rotor pole members and located to establish a small substantially constant air gap between said pole faces and at least one of said magnetic units including an electromagnetic units, and a control unit connected to said electromagnetic unit and operable to selectively establish direct current magnetization of the pole faces to have the same polarization with respect to the adjacent pole face of the aligned pole with the rotor poles and stator poles aligned, whereby said like polarization results in selective direct driving forces on said rotor as a result of said crank construction.
Claim 3
Dependent Claim 300 words
A direct current pulsed motor adapted to be energized from a suitable direct current electrical power supply, comprising a stator unit including a plurality of circumferentially distributed electromagnetic units, each of said stator electromagnetic units including a linear stator magnetic pole and a coil wound on said stator pole, said pole being located in said stator with the inner ends in a common circular cylindrical plane and extending outwardly on a chordal path line through said annular stator, a rotor rotatably mounted within said stator unit and including a plurality of circumferential distributed rotor electromagnetic units, each said rotor electromagnetic units constituting an even multiple of the stator electromagnetic units, each said rotor electromagnetic units including a magnetic linear pole having a cross-section substantially the same as said stator poles and interconnected to a rotor hub by an offset arm member defining a crank arm from said hub and constructed and arranged to align said rotor poles on a chordal path line in alignment with said stator poles and corresponding to the orientation of said stator poles said offset arm member being substantially shorter than said linear pole, the outer end of each of said rotor poles terminating in close space relation to the cylindrical plane of said stator unit, the outer end of each rotor pole having an arcuate end surface to maintain a constant air gap between the end surface of the poles the cylindrical plane, and magnetic field generating means coupled to said stator poles and said rotor poles and providing magnetic poles at the opposed and aligned ends thereof of a like polarity upon each alignment of said stator poles and said rotor poles whereby said poles develop opposing magnetic forces driving said rotor pole from said stator pole and thereby generating rotation of said rotor.
Claim 4
Dependent Claim 300 words
A direct current pulsed motor adapted to be energized from a suitable direct current electrical power supply, comprising a stator unit including a plurality of circumferentially distributed electromagnetic units, each of said stator electromagnetic units including a linear stator magnetic pole and a coil wound on said stator pole, said pole being located in said stator with the inner ends in a common circular cylindrical plane and extending outwardly on a chordal path line through said annular stator, a rotor rotatably mounted within said stator unit and including a plurality of circumferential distributed rotor electromagnetic units, each said rotor electromagnetic units constituting an even multiple of the stator electromagnetic units, each said rotor electromagnetic units including a magnetic linear pole having a cross-section substantially the same as said stator poles and interconnected to a rotor hub by an offset arm member defining a crank arm from said hub and constructed and arranged to align said rotor poles on a chordal path line in alignment with said stator poles and corresponding to the orientation of said stator poles said offset arm member being substantially shorter than said linear pole, the outer end of each of said rotor poles terminating in close space relation to the cylindrical plane of said stator unit, the outer end of each rotor pole having an arcuate end surface to maintain a constant air gap between the end surface of the poles the cylindrical plane, and magnetic field generating means coupled to said stator poles and said rotor poles and providing magnetic poles at the opposed and aligned ends thereof of a like polarity upon each alignment of said stator poles and said rotor poles whereby said poles develop opposing magnetic forces driving said rotor pole from said stator pole and thereby generating rotation of said rotor.
Claim 5
Dependent Claim 98 words
The direct current motor of claim 2, wherein said magnetic field generating means includes a coil on each of said rotor poles and a separate coil on each of said stator poles, a power supply, and a pulsing circuit connected to said rotor coils and to said stator coils, to selectively connect the power supply to said coils and a sensor unit for sensing the position of said rotor and operable to energize said coils in synchronism with alignment of a rotor pole and a stator pole whereby the opposing magnetic forces create said rotation of said rotor.
Claim 6
Dependent Claim 365 words
A direct current motor energizable from a direct current energy supply comprising a rotor having a central shaft and a rotor core secured to said shaft, a plurality of drive arm units secured to said hub, each of said arms extending chordally along a chordal path across said rotor and extending from said hub outwardly on said chordal path to an outer cylindrical rotor surface, an annular stator assembly mounted in fixed relation with a cylindrical inner surface spaced outwardly from said outer cylindrical surface of said rotor and defining a uniform air gap between the ends of the rotor arms and the cylindrical inner surface, said rotor having a plurality of rotor windings wound on each of said rotor poles, a fixed contact member secured to said rotor in fixed relation to said winding and having sliding end-faced contacts for individually supplying DC power to each of said rotor windings, an annular stator having a plurality of electromagnetic units circumferentially mounted therein and including poles aligned and oriented in accordance with the chordal orientation of said rotor poles and projecting outwardly from said cylindrical inner surface for precise axial alignment with said rotor poles, said stator poles having end faces substantially the same as said rotor poles and spaced for simultaneous alignment of a plurality of said poles stator windings would on each of said stator poles, switch means for connecting said stator winding to a DC power supply to establish a unidirectional magnetic field in each of said stator poles, a fixed contact plate mounted adjacent to said rotor and including sliding contacts adapted to slidingly engage said end-face contacts of said rotor windings, and switch means connected to said sliding contacts and to said DC power supply for selective energizing of said rotor windings in timed synchronism with said stator windings and the alignment of the stator and rotor poles so as to establish a counterforce between the fixed stator poles and the rotatable rotor poles to thereby generate rotation of said rotor, and controls connected to said switch means for selective energizing of the said stator windings and said rotor windings to control the output torque and speed of said motor.
Claim 7
Dependent Claim 365 words
A direct current motor energizable from a direct current energy supply comprising a rotor having a central shaft and a rotor core secured to said shaft, a plurality of drive arm units secured to said hub, each of said arms extending chordally along a chordal path across said rotor and extending from said hub outwardly on said chordal path to an outer cylindrical rotor surface, an annular stator assembly mounted in fixed relation with a cylindrical inner surface spaced outwardly from said outer cylindrical surface of said rotor and defining a uniform air gap between the ends of the rotor arms and the cylindrical inner surface, said rotor having a plurality of rotor windings wound on each of said rotor poles, a fixed contact member secured to said rotor in fixed relation to said winding and having sliding end-faced contacts for individually supplying DC power to each of said rotor windings, an annular stator having a plurality of electromagnetic units circumferentially mounted therein and including poles aligned and oriented in accordance with the chordal orientation of said rotor poles and projecting outwardly from said cylindrical inner surface for precise axial alignment with said rotor poles, said stator poles having end faces substantially the same as said rotor poles and spaced for simultaneous alignment of a plurality of said poles stator windings would on each of said stator poles, switch means for connecting said stator winding to a DC power supply to establish a unidirectional magnetic field in each of said stator poles, a fixed contact plate mounted adjacent to said rotor and including sliding contacts adapted to slidingly engage said end-face contacts of said rotor windings, and switch means connected to said sliding contacts and to said DC power supply for selective energizing of said rotor windings in timed synchronism with said stator windings and the alignment of the stator and rotor poles so as to establish a counterforce between the fixed stator poles and the rotatable rotor poles to thereby generate rotation of said rotor, and controls connected to said switch means for selective energizing of the said stator windings and said rotor windings to control the output torque and speed of said motor.
Claim 8
Dependent Claim 17 words
The direct current motor of claim 4 including control means connected to control energization of said coils.
Claim 9
Dependent Claim 34 words
The motor of claim 4 wherein said control means includes a current control for varying the energy supplied to said coils and thereby the repelling forces to vary the rotational speed of said motor.
Claim 10
Dependent Claim 23 words
The motor of claim 4 wherein said control means is operable to reverse the polarization of the coil and thereby the associated pole.
Claim 11
Dependent Claim 75 words
The motor of claim 1, including a plurality of motor sections each including a plurality of electromagnetic stator units and a plurality of electromagnetic rotor units, said motor sections being divided into first motor sections and second motor sections, said first motor sections having said magnetic pole oriented to provide rotation in a first direction and said electromagnetic units of said second motor sections being oriented and constructed to establish rotation in an opposite direction.
Claim 12
Dependent Claim 39 words
The direct current motor of claim 1, having means coupled to said rotor unit to monitor the position of said rotor unit and establish an output in synchronism with predetermined alignment of a rotor pole and a stator pole.
Claim 13
Dependent Claim 28 words
The motor of claim 9, including means to vary the polarity of at least one of said electromagnetic units to develop an attractive force between the magnetic poles.
Claim 14
Dependent Claim 13 words
The motor of claim 1, wherein said poles are formed as laminated poles.
Claim 15
Dependent Claim 17 words
The motor of claim 1, wherein said rotor includes an inner hub integral with said magnetic poles.
Claim 16
Dependent Claim 23 words
The motor of claim 1, wherein said rotor poles and arm members are integral with a common hub to form a rotor core.
Claim 17
Dependent Claim 14 words
The motor of claim 12, wherein said hub includes a plurality of like lamination.
Claim 18
Dependent Claim 41 words
The direct current motor of claim 1, having a rotor with a central hub having a plurality of circumferentially space chordal walls, a plurality of electromagnetic poles coupled to said chordal walls and extending along, the chordal line of said rotor.
Claim 19
Dependent Claim 66 words
The motor of claim 1 including at least four rotor sections, said stator unit having end plates and a central plate, with every other section being constructed to establish a forward rotation and with adjacent sections being wound and located to establish opposite rotation of the motor shaft, said end plates and said central plate having an electrical power connectors coupled to the adjacent rotor sections.

References Cited (Backward Citations)

US788291A Cited
US2677090A Cited
US2725512A Cited
US2870352A Cited
US3118138A Cited
US3121812A Cited
US3470509A Cited
US3700942A Cited
US4873463A Cited
US5070264A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1996-08-02 1997-02-01 1997-08-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2000-08-02 2001-02-01 2001-08-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2004-08-02 2005-02-01 2005-08-03 $7700.00 Window Closed / Lapsed

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