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| Number | Title | Issue Date |
| 4751413 | Solar energy motor A solar energy motor comprises a plurality of photovoltaic elements, such as solar cells, and armature coils unistructurally secured to a rotatable axis. The photovoltaic elements and the armature coils are electrically connected such that DC electromotiv... | 06/14/1988 |
| 4716330 | DC motor with commutator rotor The commutator of the motor is made up of three parts assembled coaxially and insulated from one another. Each part is connected to one of the windings of the rotor. The parts are blanked from a sheet of metal, preferably silver, with a flat annular zone,... | 12/29/1987 |
| 4698538 | dc brushless electromagnetic rotary machine A dc brushless electromagnetic rotary machine, such as a dc electric motor or a dc electrical generator, includes a rotor having a permanent magnet which has the entirety of its cylindrical outer peripheral surface magnetized in the same polarity. The out... | 10/06/1987 |
| 4694210 | Brushless DC motor and sensorless drive arrangement therefor A resilient coupling between the rotor and output shaft of a brushless DC motor cooperates with a sensorless drive arrangement that obtains rotor position information from the voltage induced in the stator windings of the motor to reduce the effective ine... | 09/15/1987 |
| 4683388 | Compound induction electric rotating machine A dynamoelectric machine of the type having a distributed armature winding in a cylindrical rotor wound to form axial and substantially radial winding portions and including permanent and/or electromagnets to couple magnetic flux into the peripheral or ci... | 07/28/1987 |
| 4644199 | Linear DC permanent magnet motor A linear DC permanent magnet motor comprising a wound member having a plurality of windings wound on a slotted magnetic structure and a field member movable relative to said wound member, the field comprising permanent magnet means for developing a magnet... | 02/17/1987 |
| 4613779 | Electrical pulse generator An electrical pulse generator comprising a series of electromagnets spatially positioned about the outer circumference of a disc-like base and a second series of complimentary electromagnets positioned about an inner position on said disc. One of each of ... | 09/23/1986 |
| 4598463 | Process for production of commutator A commutator of the arch-thrust type and process for its production, wherein at least one annular slot is provided in its segment set which is located concentrically to the longitudinal axis of the commutator and into which an armoring ring is placed whic... | 07/08/1986 |
| 4598222 | Direct current machine This disclosure depicts a direct current machine having an armature, in which a plurality of coils are opposed to each of a plurality of field poles and coil-wound in a special wave winding. In this special wave winding, each of the coils is divided into ... | 07/01/1986 |
| 4585963 | Brushless direct current motor with inverted magnet clip A brushless direct current motor with the rotating magnet cup permanently attached to the spindle hub. After attachment, the combination spindle hub and magnet cup are affixed to the shaft and the resulting subassembly is dynamically balanced. The motor u... | 04/29/1986 |
| 4583016 | Direct current motor A direct current motor comprising a field magnet with 2np magnetic poles, magnetized to N and S poles with equal angular intervals, where n is an integer of 1 or more and p is an integer of 2 or more; a magnetic member for closing the magnetic circuit of ... | 04/15/1986 |
| 4581554 | Compound interaction electric rotating machine A dynamoelectric machine of the type having a cylindrical rotor including electrical conductors having radial portions and radially extending magnetic portions and including permanent and/or electromagnets to form axial end air gaps between the rotor and ... | 04/08/1986 |
| 4571528 | Electromagnetic rotary motor An electromagnetic rotary motor including a stator means, a rotor means and an electronic control means for inducing an electromagnetic field. The stator means includes a permanent magnet means having pole faces that define a gap between them with a gener... | 02/18/1986 |
| 4570093 | Direct-current motor with two drive magnets A direct-current motor includes a rotatable shaft, a core mounted on the rotatable shaft and supporting windings disposed around the core, the core having winding-free portions, a first drive magnet disposed in radially confronting relation to the winding... | 02/11/1986 |
| 4570092 | Driving apparatus useful in a movable toy A driving apparatus for use in a movable toy is disclosed, and includes a mobile body, an immobile body, a plurality of permanent magnets fixed to the mobile or immobile body, at least one electromagnet fixed to the other body so as to co-operate with the... | 02/11/1986 |
| 4564793 | Brushless DC motor with improved starting A brushless DC motor of the kind that includes a relatively large rotor permanent magnet magnetized radially in segments around its circumference to provide alternate segments oppositely magnetized has a stator magnetic structure with two dissimilar pole ... | 01/14/1986 |
| 4563622 | Simple brushless DC fan motor A simplified fan and brushless DC motor employs an annular permanent magnet magnetized in segments about its circumference. Each segment is oppositely radially magnetized with respect to the preceding segment as one proceeds around the magnet. Fan blades ... | 01/07/1986 |
| 4551645 | Disc type brushless motor A disc type brushless motor comprising a rotor provided with a field magnet having two or more poles, and a stator on which loop-like armature windings are flatly positioned opposite to the field magnet in quantity of two or more in the circumferential di... | 11/05/1985 |
| 4526007 | Electromagnetic turbine system A multifunctional magnetic systems, draft, centrifugal force turbine which employs magnetic attraction and repulsion systems including a turbine with turbine magnets and magnetic shield magnets. The magnetic attraction and repulsion systems are augmented ... | 07/02/1985 |
| 4524293 | 4-Pole electric motor A 4-pole armature is accommodated with in a 4-pole permanent-magnet ring, either the ring or armature serving as the rotor. The core of the armature is cross-shaped, a set of two members of the core in straight orientation has windings applied on each mem... | 06/18/1985 |
| 4517477 | Magnetic motor A plurality of permanent magnets are arranged to have spaced apart alternating opposite poles at the peripheral of the rotor. A stator magnet alternately attracts the first pole and repels the second pole of each sequential permanent magnet to cause rotat... | 05/14/1985 |
| 4503349 | Self-excited high current DC electrical pulse generator Homopolar generators are provided with a helical field coil disposed around a rotor, wound coaxially with the rotor, and connected in series with sliding electrical contacts on the rotor. The coil of a single rotor machine includes two sections wound so a... | 03/05/1985 |
| 4486675 | Direct current magnetic motor A DC magnetic motor includes first and second stator plates each equipped with first and second commutating rings and four ferromagnetic bodies (e.g. steel) or permanent magnets positioned in quadrature with angularly adjacent permanent magnets having opp... | 12/04/1984 |
| 4458167 | D. C. Electric motor with improved stator and rotor structure An electric motor comprising a rotor rotating around an axis and a stator. The rotor and the stator each comprise a set of dipolar pieces regularly distributed around their respective periphery, one of these sets being inside a circle centered on the axis... | 07/03/1984 |
| 4458184 | Brushless D.C. motor having asymmetrically positioned poles A brushless DC motor has a rotor which is partially magnetized. The magnetized portion of the rotor extends in a circumferential arc of approximately 180° and has a first magnetic polarity (either north or south polarity). The stator of the brushless DC ... | 07/03/1984 |
| 4441043 | Compound interaction/induction electric rotating machine A dynamoelectric machine of the type having a distributed armature winding in a cylindrical rotor wound to form axial and substantially radial winding portions and including permanent and/or electromagnets to form radial and axial air gaps between the rot... | 04/03/1984 |
| 4437028 | Armature winding for a DC multi-pole motor This invention provides a DC multi-pole electrodynamic device, specifically a cup type DC multi-pole coreless motor having fixed field magnets, a magnetic material for closing the magnetic circuits of the field magnets, an armature composed of armature co... | 03/13/1984 |
| 4371817 | Brushless, permanent magnet d-c pulse current controlled, essentially uniform torque dynamo electric machine, particularly motor A permanent magnet motor designed for d-c operation with pulsed current supply through at least two, and preferably four or more stator coils, has a rotor magnetized such that, with respect to 180°-electrical, about 120° are magnetized in one magnetic p... | 02/01/1983 |
| 4358693 | Permanent magnet motor A magnetic motor has K stators (K=any integer) and preferably K+1 rotors with each stator having 4n electromagnetic coils (n=any integer), and each coacting rotor has p=3/2n permanent magnets with their poles alternating in polarity. The coils on each sta... | 11/09/1982 |
| 4357551 | D.C. Impulsion motor A d.c. motor that operates by electromagnetic impulsions rather than through continuous electrical energization and which is characterized by permanent rotor magnets reactively associated to permanent stator magnets that produce rotary action on the perma... | 11/02/1982 |
| 4344007 | Direct current motor and generator A direct current motor, or generator, wherein there are pairs of diametrically oppositely positioned armature coils connected together, and wherein one pair is solely connected to a single set of diametrically opposite commutator segments.... | 08/10/1982 |
| 4333015 | Solid-state commutator for use in electric motors A commutator is manufactured of a printed circuit board having a circular shape. A plurality of terminals are evenly spaced around the periphery of the printed circuit board, and may be connected to junction points in an armature winding. Phototransistors... | 06/01/1982 |
| 4328417 | Solar tracking mechanism A mechanism for tracking the sun and positioning a solar energy collector, photovoltaic cells being utilized to energize pairs of electric coils rotatably mounted within magnetic rings. When the sun's rays fall upon a bank of photovoltaic cells a pair of ... | 05/04/1982 |
| 4314169 | Magnetic motor The disclosure is of a machine for producing the rotary motion of a shaft by causing two permanent magnets carried by the shaft to pass in close proximity to the poles of an electromagnetic coil as the shaft is rotated, with poles of the same polarity of ... | 02/02/1982 |
| 4311933 | Brushless direct current motor A brushless D.C. motor has electrical power switched between the phase windings by means of a circuit which includes a plurality of hall effect switches. The hall effect switches are operated by a plurality of arcuate commutating magnets which are radiall... | 01/19/1982 |
| 4305024 | Magnetic motor A magnetic motor comprises a plurality of electromagnets connected to an excitation circuit, and a rotor assembly having a plurality of permanent magnets around its periphery and arranged for angular movement. The permanent magnets are movable between the... | 12/08/1981 |
| 4292553 | Apparatus for generating mechanical energy responsive to interaction of magnetic fields An apparatus for generating mechanical energy responsive to the interaction of a plurality of magnetic fields so as to generate increased mechanical energy from a given quantity of electrical energy as compared with presently known devices, and so as to i... | 09/29/1981 |
| 4291248 | Electric motor An electric motor having exceedingly high efficiencies includes three induction coils equally disposed about a circular path, a toroidally-shaped armature is disposed within the induction coils. The armature has a non-magnetic segment placed therein, ther... | 09/22/1981 |
| 4233532 | Modular dynamoelectric machine A dynamoelectric machine comprising a plurality of single functional modular units mounted end to end on a common output shaft. Each individual unit comprises a rotor consisting of a single cylindrical coil or winding having its axis at a right angle to t... | 11/11/1980 |
| 4227107 | Direct current motor with double layer armature windings A direct current motor, having armature windings superposed on each other in double layers, is provided with a fixed field magnet having 2 mn poles (m being a positive integer of 1 or more, n a positive integer of 2 or more) magnetized alternately to N an... | 10/07/1980 |
