Matches 51 - 100 out of 171 < 1 2 3 4 >
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6262508 Rotary electrical device  
It is an object of the present invention to provide a rotary electrical device that can be manufactured easily, and which produces a high output torque at low operating speeds. The rotary...
6175176 Electric motor  
An electric motor with a stator having two magnetic shells (2, 3) has a spring element (6) which prestresses the magnetic shells (2, 3) against a stop fixed to the housing. The spring element (6)...
6166465 Vibration generating mechanism using repulsive forces of permanent magnets  
A vibration generating mechanism includes at least first and second permanent magnets spaced from each other with the same magnetic poles opposed to each other. The first permanent magnet is...
6157107 Motor with magnetic stator poles inside and outside the rotor magnet  
A motor includes a rotor including a permanent magnet circumferentially equally divided and alternately magnetized to different poles into a cylindrical shape. A first coil and a second coil are...
6144132 Permanent magnet motor  
A permanent magnet motor is provided comprising a plurality of individual permanent magnets 7 threaded inside of a rotor, an N pole magnetic circuit commonly connected to N poles of the plurality...
6124774 Electromagnetic control motor device, particularly a ratio meter  
The present invention relates to an electromagnetically controlled drive device, in particular a ratio meter, the device being of the type comprising: a set of control coils (10, 20); a frame (50)...
6121706 Reluctance motor  
A reluctance motor is provided that reduces leaking magnetic flux. To generate magnetic flux between adjacent magnetic poles in a rotor 2, permanent magnets 4 are disposed in approximate centers of...
6087750 Permanent magnet generator  
A permanent magnet generator is described. The generator includes a shaft which defines a longitudinal axis. A rotatable magnetic field assembly is mounted on the shaft and adapted for rotation...
6031311 Brushless DC motor capable of preventing leakage of magnetic flux  
A brushless DC motor has a stator and a rotor. The stator has a stator core and excitation coils wound around the stator core. The rotor has a rotor core disposed at the inner space of the stator,...
6013962 Permanent magnet motor with specific magnets and magnetic circuit arrangement  
The object of the present invention is to increase torque generation of a motor, to minimize a motor size, and to reduce a motor cost by improving a magnetic circuit of a rotor. In order to achieve...
5936323 Permanent magnet rotation type rotary machine and manufacturing method thereof  
Plural magnet insertion holes are provided at a vicinity of an outer peripheral of a laminated rotor core toward a circumferential direction and extend toward an axial direction. The magnet...
5925958 DC motor utilizing permanent magnets  
A motor produces a rotary motion by synchronizing the attractive and repulsive magnetic interactions of magnetic fields. A stator magnetically interacts with a rotor, cycling through changes in...
5907205 Constant reluctance rotating magnetic field devices with laminationless stator  
A rotary magnetic field device for use in a dc motor or generator, or an ac motoer or generator. The device has a permanent magnet rotor, stator field windings and an outer cylindrical stator piece...
5894183 Permanent magnet generator rotor  
A permanent magnet rotor for an electric generator or motor has a core lamination hub formed of a stack of generally round plates with peripheral slots for holding the first end of a rectangular...
5892311 Induction generator having a pair of magnetic poles of the same polarity opposed to each other with respect to a rotation shaft  
An induction generator having a pair of magnetic poles of the same polarity opposed to each other with respect to a rotation shaft is characterized by a high energy conversion efficiency. The...
5892310 Torquer assembly  
A torquer assembly is to exert torques about two mutually orthogonal axes on a platform which is mounted for universal movement about a central swivelling point. To this end, a stator having four...
5831365 Detachable magnet carrier for permanent magnet motor  
A magnet carrier assembly for holding and carrying a high-energy-product permanent magnet is arranged for releasable attachment to a rotor of an axial disc or drum type rotor in an electric...
5821650 Soft magnet for a rotor  
The present invention is an a rotor. The rotor includes a rim portion, divided into a first rim section and a second rim section. The first rim section includes a soft magnet positioned on it. The...
5818138 Permanent magnet electric machine with hard-magnetic and soft-magnetic segments  
In known permanent magnet electric machines with a radial air gap, intersecting phase conductors are deflected only into the space arranged axially in front of the slotted soft magnetic body. By...
5818140 Synchronous reluctance electrical motor having a low torque-ripple design  
A synchronous reluctance electrical motor, including a stator having an even number of slots per pair of poles equal to n s , a rotor of the transverse lamination type having an even number n r of...
5804901 Energy conversion device using permanent magnets  
An energy-conversion device using permanent magnets in which there is 1) an attraction magnetic field generating device constituted by connecting the two poles between an electromagnet made by...
5783890 Imprinted geometric magnetic anticog permanent magnet motor  
A brushless, direct current, permanent magnet motor is disclosed, which comprises a stator and a rotor mounted for rotation about an axis in the stator. The stator has a plurality of stator teeth...
5763974 Permanent magnet electric motors, in particular for ventilation of motor vehicles  
A permanent magnet electric motor comprises a body shell with a cylindrical inner face, permanent magnets lying against the inner face of the body shell, and connecting pieces, each of which has a...
5763972 Magnetic bearing with alternating actuators and sensors  
A magnetic bearing for magnetic centering of a rotor relative to a stator relative to two radial centering axes includes actuators operating relative to centering axes and speed sensors having...
5759797 Apparatus and method for analyzing physiological state of organism  
An apparatus and a method for analyzing the physiological state of a sample of a living organism of eucaryotes and procaryotes, e.g., plants, seeds, tissues, calluses and microorganisms, which...
5723929 D.C. Motor with primary and auxiliary magnetic poles  
A direct current motor for vehicle engine starters includes a plurality of primary and auxiliary magnetic poles made of permanent magnets arranged between a cylindrical yoke and a cylindrical...
5717266 High power oscillatory drive  
An oscillatory drive incorporating the invention includes a driven rotor that is mounted on a shaft and includes plural driven permanent magnets disposed thereon. A spring arrangement is coupled to...
5696419 High-efficiency electric power generator  
An electrical generator has a plurality of C-shaped stator members which are made of magnetically permeable material. Each C-shaped stator member includes a respective stator winding, and the...
5691681 Method of producing a field magnet for a DC motor and a field magnet for a DC motor  
A method of producing a field magnet for a DC motor is disclosed. A molding material is casted into a molding space which is between outer and inner molds. Field poles are formed by magnetizing...
5672924 Robots using modular direct drive motors  
A direct drive robot motor may be used for the arms, legs, eyes and fingers of a robot. The motor comprises a rotor, having a permanent magnet, and a tubular arm portion, which is integral with the...
5633549 Brushless pulse drive motor  
In this pulse driven motor, electromagnetic stators are mounted on the outside of an annular hollow nonferrous cage. The stators are "U" shaped and mounted with the open end of the "U" facing...
5625241 Carousel electric generator  
A permanent magnet generator or motor having stationary coils positioned in a circle, a rotor on which are mounted permanent magnets grouped in sectors and positioned to move adjacent said coils,...
5606210 Power generator by magnetically repulsing magnetic shuttles  
A power generator includes a fly wheel rotatably driven by a driving device, a plurality of magnetically repulsive magnets circularly disposed in an extension ring annularly formed on the fly...
5594289 Magnetic rotating apparatus  
On a rotor which is fixed to a rotatable rotating shaft, a plurality of permanent magnets are disposed along the direction of rotation such that the same magnetic pole type thereof face outward. In...
5578884 Permanent magnet type rotating machine  
A permanent magnet type rotating machine comprises a cylindrical yoke; a plurality of permanent magnets installed on an inner periphery of the cylindrical yoke; a rotor rotatably installed at an...
5543676 Rotating electrical machine with magnetic inserts  
In one embodiment of the present invention, a rotor of a "claw pole" alternator includes first and second pole pieces with intermeshing fingers. Magnetic inserts are provided made preferably of...
5523637 Permanent magnet electrical machine with low reluctance torque  
A permanent magnet synchronous motor includes a permanent magnet rotor and a stator having wound teeth facing the rotor. The stator teeth each include notches having equal width and having a...
5455474 Magnetic motor construction  
The present invention relates to an apparatus having spaced permanent magnets positioned so that there is magnetic interaction between them, and controlling the interaction by having a coil in the...
5402021 Magnetic propulsion system  
A magnetic propulsion system including a plurality of specifically arranged permanent magnets and a magnetic vehicle propelled thereby along a path defined by the permanent magnets. The magnetic...
5389844 Linear electrodynamic machine  
A linear electrodynamic machine is disclosed having non-axisymmetric, interdigitating interfaces between moving and fixed magnetic circuit elements. The moving magnet elements may be of permanent...
5319274 Magnetic bearings with twisted laminations  
Laminated stator and rotor components for a magnetic thrust bearing each include a plurality of generally radially directed laminations (10) whose roots lie along the axis of rotation of a shaft...
5245238 Axial gap dual permanent magnet generator  
A permanent magnet generator having a plurality of permanent magnet generator units which produce a controlled output potential by mutual magnetic flux linkage between the permanent magnet...
5146123 Linear reciprocating alternator  
An electric generating alternator for use with linear reciprocating motive sources. The alternator consists of a plunger with permanent magnets extending radially from a small diameter structurally...
5124606 Dual rotor with continuous/positioning reverse controls  
A driving motor, for continuous and positioning type operation, includes two different types of rotors, a main rotor and an auxiliary rotor, corresponding to the type of operation required. Both...
5053659 Centrifugal force magnetic field variator  
A magnetic actuator for controlling the electrical induction in a pickup coil to a predetermined speed of rotation of a workpiece actuated shaft consisting of a series of magnets in a fixed...
5047680 Rotating electrical machine  
A rotating electric machine comprises a rotor and a stator each having a ferromagnetic core and being separated by a cylindrical air gap. The stator core is provided with three peripheral rings of...
5043615 Noncontact bearing utilizing magnetism  
A noncontact magnetic bearing has cylindrical magnetic members magnetized axially, slightly different in radius and different in length, disposed in opposite relation to each other, with their...
5034642 Permanent magnet rotor and motor  
A permanent magnet rotor for an electric motor includes longitudinally extending main rotor field and sensor field sections, the sensor field section being substantially shorter than the main rotor...
5034641 Rotary machines with permanent magnet  
The invention relates to an improvement in the design of the magnetic circuit in a permanent-magnet rotary machine, e.g., a servomotor, with an object to stabilize the output of the motor with...
4987329 Motor magnet arrangement  
In order to reduce, in a permanent magnet-excited electric motor with at least four poles, the cost for the machining and assembly of a magnet arrangement and to thereby lower the production costs,...
Matches 51 - 100 out of 171 < 1 2 3 4 >