Matches 1 - 42 out of 42


Match Document Document Title
8169117 Brushless motor for fluid pump and fluid pump using the motor  
The present invention provides a brushless motor for a fluid pump that allows implementing a fluid pump that overcomes problems of durability and reduction of energy efficiency due to DC motors in...
8143830 Brushless motor apparatus  
A blushless direct current (BLDG) motor apparatus includes: a stator which is provided with a plurality of windings corresponding to N phases and wound in parallel independently of each other; a...
7948139 Magnetic control circuit separation slit  
An electric alternator/motor having a stator with at least two non-overlapping sectors is provided. Each sector includes a first winding, first and second magnetic circuits and a saturation control...
7876018 Synchronous reluctance motor and compressor having the same  
A synchronous reluctance motor comprises a stator and a rotor, the rotor comprising: a rotation shaft; a first core having a shaft hole for inserting the rotation shaft at a center thereof, and...
7714478 Electric rotary machine  
In an electric rotary machine, a stator, a metallic supporting member configured to support the stator, and a rotor are provided, the rotor is relatively rotatably supported with respect to the...
7696664 Magnetic path closed electric generator  
A magnetic path closed electric generator includes a base (9), a housing (8), a stator (3), a rotator (5), a rotation shaft (7) and a transmission wheel. A magnetic permeability neck (12) is fixed...
7646129 Stator for an electric machine  
The invention relates to a stator for an electric machine, which has a core comprised of laminated sheet metal (1), the pole teeth (2) of each laminated sheet metal (1) of the core being connected...
7446449 Electric motor  
An electric motor comprising a rotor and a stator is disclosed. The rotor is supported on a substantially spherical bearing and is of a substantially spherical design facing the stator, which has a...
7382071 Rotating electric machine  
A variable-speed rotating electric machine includes at least two armatures having respective armature coils for multiple phases, and a rotor having permanent magnets. The armatures are arranged...
7157820 Resolver  
Plurality of air gaps are formed in a torus-shaped stator body of the resolver. If a straight line were drawn from a center point of the stator body toward the outside in the radial direction of...
7045923 Magnetizing method and permanent magnet magnetized thereby  
A conductive attenuation body is arranged close to at least a part of surface of a material to be magnetized which has far lower conductivity than that of the attenuation body. Furthermore, the...
6975050 Brushless DC motor  
A system and method for reducing the cost of producing a brushless DC motor is presented. The brushless DC motor provides higher power density and efficiency with an increased tool run time. The...
6924579 Electrical machine  
A motor/alternator is formed by a single toroidal magnet and flux conductors which, in combination with flux switches, create an alternating magnetic circuit around a power coil. The...
6891300 Rotor of induction starting synchronous motor  
A rotor of an induction starting synchronous motor includes permanent magnets and induction coils having both ends short-circuited in a core. The permanent magnets are arranged side by side in a...
6836045 Electrical motor  
An electric motor is equipped with a rotor having multiple rows of slits arranged along a radial direction. A permanent magnet is buried only in some of the slits, namely the ones closest to the...
6803694 Unitary amorphous metal component for an axial flux electric machine  
A unitary amorphous metal magnetic component for an axial flux electric machine such as a motor or generator is formed from a spirally wound annular cylinder of ferromagnetic amorphous metal...
6803692 Permanent magnet type electric motor  
The permanent magnet type reluctance electric motor includes a stator including a stator iron core and having armature coils placed inside slots, and a rotor provided with a plurality of magnetic...
6769167 Method of manufacturing a rotor for a synchronous reluctance motor  
A rotor for a synchronous reluctance motor of flux barrier type and manufacturing method thereof constructs a rotor for a synchronous reluctance motor by forming a magnetic core steel plate of disc...
6664696 Tooth saturation for reduced electromagnetic harmonics  
The tooth saturation level is improved and electromagnetic harmonics reduced by reducing the path cross-section of area in the tooth with a geometrical means such as punched holes through the...
6661147 Electric vehicle and rotary electric machine having a divided rotor core  
An rotary electric machine 1 comprises stator 2 having a stator core 4 wounded with stator windings 5 and a rotor 3 having a rotor core 7 rotatable and opposite to the stator core 4 through a gap....
6617740 D.C. PM motor and generator with a stator core assembly formed of pressure shaped processed ferromagnetic particles  
A d.c. PM motor and corresponding generator having a stator core assembly which is formed of a molded or pressure shaped processed ferromagnetic particulate material. The low permeability...
6598288 Armature of motor, manufacturing method of the same and motor using the same and motor having the same  
A motor armature which allows assembly works to be facilitated and which can be miniaturized and thinned is provided. An inner cylinder 1 and an outer cylinder 2 are disposed coaxially and a...
6545382 Spindle motor including stator with magnetic flux guides  
An aspect of the invention can be regarded as a spindle motor. The spindle motor includes a rotor and a stator. The rotor includes a first plate defining a circular first plate periphery disposed...
6486583 Electromagneto-mechanical converter  
An electromagneto-mechanical converter has winding teeth composed of a material which is suitable for carrying a magnetic flux of a magnetic circuit. The winding teeth each have a winding support...
6483219 Electric motor  
A DC machine for use as a DC motor (10) or generator, comprising an outer casing (100), and a rotor (200) comprising a central shaft (220) and at least one cylindrical permanent magnet (230) which...
6313560 Thermally protected electric machine  
An electric machine including a magnetic component, forming part of its rotor or stator that loses its magnetic characteristics above a certain chosen temperature is disclosed. This magnetic...
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...
6064132 Armature structure of a radial rib winding type rotating electric machine  
A structure of an armature of a radial rib winding type rotating electric machine which constitutes at least a member of a stator or a rotor is disclosed. The structure comprises a laminated core...
5977684 Rotating machine configurable as true DC generator or motor  
A rotating machine configurable as a pure DC generator for use in various applications, including recharging batteries in battery operated portable devices. The generator consists of a pair of...
5864191 Efficient permanent magnet rotor for brushless motor  
An efficient permanent magnet rotor for a brushless motor has a yoke (2) formed by laminating many steel sheets (4) so as to provide an even number of magnetic poles projected externally, filed...
5864192 Brushless motor with magnetic sensor to detect leaked magnetic flux  
A brushless motor includes a stator and a rotor rotatably supported inside the stator. The rotor has a rotor yoke formed by laminating a large number of steel plates, the rotor yoke has an even...
5834874 Alternator with mechanically adjustable output  
Proportional control of the output of an alternator achieved mechanically to change the reluctance of the magnetic path between the stator and the rotor and thereby change the electrical output of...
5760504 Disk drive spindle motor with radial gap and field generating coils interconnected by ring flux guide  
A brushless permanent magnet DC motor for use as a disk drive spindle motor has a radial working gap but uses flat coils that generate magnetic fields that interact with the permanent magnet fields...
5659218 Motor stator including bobbin wound coils and method of fabrication  
A motor stator comprises a first stator frame part, a second stator frame part including first and second pole portions separated by a stator bridge, and two magnetic arms. Each of two bobbins is...
5233252 Motor having integral detent  
The motor provided includes a unique laminated stator core and a means for changing the continuity of the magnetic circuit. The stator core structure is split into two part-cylindrical elements...
5175462 Toroidal coil motor  
A toroidal coil motor characterized by the provision of an annular iron core in which laminate-fixing holes whose number is the least common multiple with respect to the number of magnetic poles...
4982129 Single phase asynchronous motor with two magnetic poles  
A single phase asynchronous motor with two magnetic poles, of the type comprising a cage rotor and a stator having laminations provided with radial slots (A, B, C, D, E, F) and a main coil and an...
4795936 Driven rotary shaft system using permanent magnets  
A driven rotary shaft system has a rotor including a core with a generally cylindrical surface, made from a stack of circular laminates of magnetic material which are clamped together in alignment....
4583015 Single-phase brushless motor with multisector stator armature poles having different cross-sections  
A single-phase brushless motor which can be manufactured at low cost and which can be started at any rotary position. The motor includes a rotary magnet having a plurality of magnetic poles and a...
4086508 Can for use in canned motor  
A can for use in a canned motor made of a soft magnetic metal plate. Said metal plate has the magnetically hard direction of the texture oriented to the circumferential direction of the can body....
3886256 Stator core for rotary electric machines and method of manufacturing the same  
A stator core for rotary electric machines, which is formed by helically and closely winding a steel strip formed by stamping with equally spaced inner slots defining a plurality of equally spaced...
3207935 Electric motors  
Matches 1 - 42 out of 42