Matches 1 - 41 out of 41


Match Document Document Title
7902707 Anisotropic permanent magnet motor  
An anisotropic permanent magnet motor includes a stator and a rotor opposed to teeth of the stator with a gap therebetween, and the rotor includes an anisotropic permanent magnet disposed on a...
7554225 Electric motor with a coil arrangement for providing oscillatory linear and rotational movement  
An electric motor for a small-scale electrical appliance, such as a toothbrush or shaver. The electric motor includes at least one oscillatory motor component, a magnet arrangement having at least...
7235909 Electromagnetic motor/generator  
In some embodiments, an electromagnetic motor/generator may include one or more of the following features: (a) a frame, (b) a magnetic section having an upper magnet, a lower magnet, and a center...
6987340 DC motor with brushes  
A DC motor includes a stator of magnets surrounding a rotor containing coils of wire surrounding cores. Brushes serve to repeatedly start and interrupt the supply of current to the individual coils...
6943464 Lithographic apparatus and motor for use in the apparatus  
A Lorentz actuator provides a force between a first part and a second part of the apparatus, comprising a main magnet system, attached to a first part of the apparatus and providing a first...
6838797 Flux ring for an electric motor  
A flux ring for a motor of a power tool has an annular housing which fits inside the motor can of the motor. At least one magnet is on the ring. The at least one magnet includes a portion formed...
6720697 Direct-current motor  
The armature of a direct-current motor is formed by an armature core and armature coils. The core includes teeth, which are arranged at a pitch of a predetermined angle. The coils are wound about...
6707213 Hybrid magnet type DC motor  
A DC motor has a stator that is constituted as a hybrid magnet. The stator has a plurality of electromagnets and permanent magnets that are alternately arranged in the circumferential direction of...
6580190 Circumferential confronting type motor  
A circumferential confronting type motor includes an armature core that has drive coils wound around its plurality of poles, and a drive magnet positioned opposite to the armature core in the...
6020666 Two-pole motor  
A pair of magnets (51, 52) oppositely disposed on each side of a rotor 1 are respectively magnetised such that the surface of each magnet facing the rotor 1 includes the North and South poles in a...
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...
5677587 Small motor having drive magnet with magnetization pattern for biasing rotor shaft  
A small motor includes a rotor fastened to a rotor shaft; a drive magnet disposed facing to the rotor; and bearings for rotatably supporting the rotor shaft with the rotor fastened thereto, wherein...
5631093 Magnetically coded device  
Nonmagnetized permanent magnet material is heated in a pattern by a laser beam to a localized temperature above the Curie point or a temperature sufficient to reduce the coercivity sufficiently for...
5434462 High-power electrical machinery  
An electrical machine having a stator formed from a pair of cup-shaped permanent magnets symmetrically disposed on opposite sides of a conductive, disk-shaped rotor. The magnets are polarized such...
5426338 High-power electrical machinery with toroidal permanent magnets  
A pair of hollow permanent magnets mounted to form a toroidal stator having cylindrical gaps and opposed cavities. The magnets are polarized such that their magnetic flux passes in one direction...
5341053 Linear motor with permanent magnets  
A linear motor having a magnetic circuit and a moving coil, the magnetic circuit comprising a linear yoke provided at the center of the circuit and a pair of linear magnets, the linear yoke and the...
5206556 Field magnet for miniature motors  
A field magnet for miniature motors of a type having a stator comprising a field magnet fixedly fitted to a motor housing, an end plate fitted to an open end of the motor housing; an a rotor...
5204569 Anisotropic magnet for rotary electric machine  
An anisotropic magnet for a rotary electric machine having at least two magnetic pole portions in a cylindrical yoke. An anisotropic magnet constituting the magnetic pole portions is arranged such...
5170084 Wide-angle arc segment magnet and brush motor containing it  
In a brush motor comprising a stator assembly constituted by a permanent magnet assembly and a cylindrical yoke, a stator provided with coils diametrically opposing to each other and rotatably...
4994702 Motor  
A motor includes a field magnet system comprised of plural permanent magnetic poles arranged in a circle and an armature with plural poles each facing the magnetic poles of the field magnetic...
4896065 Miniature motor  
A miniature motor comprising a motor case having a bearing on the closed end face thereof, a stator consisting of a permanent magnet, brushes and terminals; and a rotor fixedly fitted to a motor...
4814654 Stator or rotor based on permanent magnet segments  
The novel rotor or stator comprises a symmetrical assembly of permanent-magnet segments, the working faces of which are separated. Each segment is magnetized to have one pole extending across...
4703210 Miniature electric non-uniform magnetization rotating machine  
A miniature electric rotating machine has a stator equipped with a field pole on a peripheral circle of a rotor, and the field pole is constituted by a permanent magnet. Each permanent magnet of a...
4687608 Composite permanent magnet for magnetic excitation and method of producing the same  
The present invention relates to a composite permanent magnet for magnetic excitation, used in a permanent type rotary machine such as permanent magnet type generators or permanent magnet type...
4445059 Electric motor, in particular a small motor  
Two-component, permanent field magnets are located opposite the armature and protrude beyond the armature core at both axial ends. The flux yield of the field magnets is improved in comparison with...
4438362 Self-starting, direct current motor with permanent magnets of varied magnetic strength  
A permanent magnet, direct current motor is made self-starting by the use of permanent magnets with varying magnetization. The use of permanent magnets with varying magnetization results in a rotor...
4383193 Field pole structure of DC motor  
A field pole structure of a DC motor has a plurality of field magnetic poles attached to the inner surface of a yoke of the DC motor to oppose an armature. Each magnetic pole includes a permanent...
4112320 Anisotropic magnet structure, particularly segmental magnet structure for permanent magnet dynamo electric machines  
An elongated ferrite structure of barium or strontium ferrite is constructed of zones in which the ferrite materials are made to have different magnetic properties, the ferrite material located in...
4104787 Forming curved wafer thin magnets from rare earth-cobalt alloy powders  
In a preferred embodiment thin curved rare earth-cobalt magnets supported on the interior surface of a steel casing are formed by hot isostatic compaction. Rare earth-cobalt powder is magnetically...
4080540 Low-powdered stepping motor  
A low-powered stepping motor is rotated and controlled by a driving circuit generating a pulsating current has a fixed field system formed by a permanent magnet, a soft magnetic material, etc. and...
3999090 Stepper motor  
A unidirectional direct rotary stepper motor is adapted to step its rotor between successive stable rest positions in response to successive electrical pulses of opposite polarity. The motor...
3939371 Rotary electric machine  
A rotary electric machine comprising a plurality of magnets with magnetic poles made of different B-H characteristics is disclosed in which a magnet with high coercive force is arranged on the...
3619677 TORQUER WITH MULTIPOLE PERMANENT MAGNET PRODUCED FROM A METAL RING  
A torquer includes a cylindrical stator, a cylindrical rotor designed to rotate within the stator and a brush block ring assembly disposed over the rotor and alongside the stator, the stator is...
3564705 METHOD FOR PROVIDING ORIENTED POLE PIECES IN A DYNAMOELECTRIC MACHINE  
3436573 CONTROL APPARATUS  
3366811 Direct current motor having a threepole armature and an annular twopole magnet  
3335309 Direct current motor  
3317872 Annular two-pole permanent magnets for direct-current motors having the free-pole armatures  
3310697 Self-starting synchronous motor  
3024392 Process for the manufacture of plastic bound permanent magnets  
2830207 Magnetic track  
Matches 1 - 41 out of 41