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Matches 151 - 200 out of 9,165

Document Document Title
WO/2008/082285A1
The invention relates to electric engineering, in particular to electric machines which are provided with a polyphase armature winding and are used for a step electric drive. The aim of said invention is to increase the reliability of a ...  
WO/2008/078607A1
A coil bobbin (50) comprises a cylindrical body portion (55) on which a coil (49) is wound, a pair of flange portions formed at both sides of the body portion (55), and terminal portions (51a, 51b) which are formed on the pair of flange ...  
WO/2008/051218A2
A permanent magnet reluctance machine (PMRM) uses electromagnetic interaction and the minimum reluctance principle to generate a developed torque that has wide constant torque to speed characteristics and a higher torque to weight ratio....  
WO/2008/045413A2
A high efficiency, low maintenance single stage or multi-stage centrifugal compressor assembly for large cooling installations. The assembly is highly efficient by virtue of a variable frequency drive (VFD) that drives a permanent magnet...  
WO/2008/029971A1
A magnetic rotation device includes a rotation axis (20): a plurality of rotating bodies (30- 3) fixedly installed along the rotation axis (20) at a specific interval, each of the rotating bodies (30a-3, 30b-3, 30c-3, 30d-3) being divide...  
WO/2008/018166A1
Provided is a motor which is thinned by improving the structure of a section for feeding a driving coil with power. In a motor (1), a stator (2) is provided with substrate holding sections (231, 241) for holding a power feeding substrate...  
WO2007106134B1
Electrically driven wheel, device, apparatus and method for a tracked vehicle with built in cogs and a brushless DC motor having permanent magnet high multiple pole motors with a mounting shaft inside of the vehicle wheels. Suspension sy...  
WO/2008/002557A2  
WO/2007/134566A3
A stepper motor (1) based on the reluctance principle has a primary part (2) and a secondary part (3) which is capable of moving in relation thereto. The primary part (2) has at least three pole assemblies (4), which are offset with resp...  
WO/2007/134574A1
The invention relates to an electromotive device for operating gas exchange valves on internal combustion engines, comprising a rotary actuator exerting forces on one or more valve stem ends of one or more gas exchange valves by means of...  
WO/2007/134566A2
A stepper motor (1) based on the reluctance principle has a primary part (2) and a secondary part (3) which is capable of moving in relation thereto. The primary part (2) has at least three pole assemblies (4), which are offset with resp...  
WO/2007/121338A2
A stator for a motor having a rotor includes a plurality of laminations each formed in a first elongated arrangement. Each lamination includes a first leg, a second leg, and an intermediate portion that are configured to be rearranged an...  
WO/2007/117731A3
The disclosed system, device and method for an electric motor generally includes a hollow shaft having a first end and a second end. An electromagnet is coupled to the hollow shaft, where the electromagnet is suitably configured to emit ...  
WO/2007/106134A3
Electrically driven wheel, device, apparatus and method for a tracked vehicle with built in cogs and a brushless DC motor having permanent magnet high multiple pole motors with a mounting shaft inside of the vehicle wheels. Suspension sy...  
WO/2007/073671A1
A motor includes a housing (1), which has a stator and a shaft (2) therein. A rotor is mounted on the shaft. A guide member driven by a driving device is disposed between the stator and the rotor and can rotate around the shaft. The stat...  
WO/2007/058069A1
A stepping motor for generating vibration in which the stopping position can be securely held by increasing a detent torque. The pole teeth of one stator yoke of a set of one-phase stator yokes are formed in two types of pole teeth with ...  
WO/2007/052331A1
A stepping motor having a rotor, a stator, and a mold case including a flange and a case body. The outer surface of pole teeth of a stator yoke is exposed at the outer surface of the mold case. The pole teeth to be exposed and their arra...  
WO/2007/048329A1
A stepping motor comprises coil assemblys with end coil, and an electronic device having the stepping motor. The stepping motor includes a permanent magnetic rotor and a stator. The rotor has multiple poles and the magnetism between two ...  
WO/2007/044155A1
The present invention relates to a motor having a stator with a magnetized rotor rotatably positioned in the stator. The stator and the rotor each have at least two magnetic poles. At least one of the stator poles has a different area co...  
WO/2007/040274A1
An upper cover (15) is provided with a step (15f) on the periphery of a supporting section (15d) which supports a rotating shaft (17), for placing a circuit board (16), and on an inner plane of the supporting section (15d), a recessed se...  
WO/2007/033871A1
The invention relates to a module (6) for primary parts (12) of synchronous motors (7, 8, 13) which are excited by permanent magnets, which comprise at least one secondary part (9) which is at least sectionally devoid of permanent magnet...  
WO/2007/034868A1
[PROBLEMS] To obtain an inexpensive, low-vibration, high-torque dynamo-electric machine having a simple winding such as an HB type stepping motor, including a four winding structure having a two-phase, four-main pole inductor, where a ro...  
WO/2007/033886A1
The invention relates to a reluctance motor comprising a rotor (1) and a stator. The rotor (1) is provided with individual rotor poles (4) which have a curved outer contour. A step-type transition (10) is embodied in the outer contour so...  
WO/2007/018261A1
[PROBLEMS] To provide a motor not requiring a complex control circuit, produced in a simple structure at low cost, having a long lifetime, and downsized and thinned. [MEANS FOR SOLVING PROBLEMS] Either a rotor (1) or a stator (3) has per...  
WO/2007/014674A1
A permanently excited electrical machine (10) having a stator (12) and a rotor (14), in which either the stator (12) has a coil arrangement (28) and the rotor is provided with permanent magnet elements (50) or the rotor has a coil arrang...  
WO/2007/011494A3
A stepper motor (30; 41) includes a rotor (32; 43) having equally spaced rotor teeth (34; 45) defining a full step angle, and a stator (36; 47) with stator poles (38; 49) wound with coils that can be driven in a series of phases so as to...  
WO/2007/011494A2
A stepper motor (30; 41) includes a rotor (32; 43) having equally spaced rotor teeth (34; 45) defining a full step angle, and a stator (36; 47) with stator poles (38; 49) wound with coils that can be driven in a series of phases so as to...  
WO/2007/001800A3
A digital motor control system (Fig 4) utilizes time duration electric pulses generated by digital logic (10, 13, 18, 19) to control the motor speed and direction of rotation of a D C or A C motor (30) The digital logic (10, 13, 18,19) p...  
WO2005038754A3
A self-rotating enclosure (6) containing an electric motor (4) particularly suited for use in very low power and low speed applications, including a counter-torque producing magnet (34). The motor comprises magnets (M3,M4) which generate...  
WO/2006/134800A1
[PROBLEMS] To provide a thin stepping motor. [MEANS FOR SOLVING PROBLEMS] This stepping motor (1) comprises a rotor (10) and a stator (20) surrounding the rotor (10). The rotor (10) is formed of a permanent magnet (11) in which a plurali...  
WO/2006/126788A1
There is provided a bearingless step motor in which a rotating shaft can rotate while rising from a main body by a magnetic force without using a mechanical bearing. The bearingless step motor comprises a stator including stator cores ha...  
WO/2006/123668A1
A pulse motor has a first iron core having iron core teeth, and a second iron core having iron core teeth arranged opposite the first iron core with an air gap in between, and auxiliary pole teeth formed between the iron core teeth. A le...  
WO/2006/118150A1
It is possible to suppress generation of vibration without requiring an additional electronic part or modification of an existing arrangement. Yokes (41a to 41d) have a magnetic pole tooth (42) formed in such a way that the ratio of the ...  
WO/2006/115358A1
A spindle motor, obtaining more accurate shaft perpendicularity and more convenient assembling process, is disclosed, the spindle motor includes: a rotor; a bearing housing into which the rotor is inserted; a base plate fixing the bearin...  
WO/2006/109679A1
A stepping motor, comprising stators disposed at both ends of a rotor magnet in the axial direction of a shaft. Each of the stators comprises an inner yoke and an outer yoke. Each of the inner and outer yokes comprises a plurality of pol...  
WO/2006/108105A3
Stator of a rotary electrical machine made of three axially adjacent stator segments (4) . Each stator segment comprises a ring coil (7) with claw poles. The claw poles consist of blocks (32,33,34) forming poles and yoke. The blocks (32,...  
WO/2006/108105A2
Stator of a rotary electrical machine made of three axially adjacent stator segments (4) . Each stator segment comprises a ring coil (7) with claw poles. The claw poles consist of blocks (32,33,34) forming poles and yoke. The blocks (32,...  
WO/2006/106601A1
A polyphase stepping motor enabling a reduction in the vibration and torque ripple of a rotor even if a current flowing to a stator coil is switched. Stator units are divided into pieces of 2n (n means the integer of one or larger) per p...  
WO/2006/097003A1
The present application relates to a drive unit for an agitator, which may be attached to the bottom, wall or cover of a mixing vessel. The agitator is especially applicable to purposes where a relatively large and slowly rotating agitat...  
WO/2006/075420A1
[PROBLEMS] To provide a stepping motor capable of providing a specified drive torque without sacrificing the magnetic performance of a magnet against stators and increasing a driving performance including control responsiveness by reduci...  
WO/2006/044884A3
A data storage device having at least one rotatable disk and at least one actuator arm assembly for writing data onto the disk and reading the data recorded on the disk is provided. The data storage device comprises a first plate (24) wi...  
WO2005107356A3
Hybrid electric reluctance motor, characterized by the fact of its having an arrangement with coils (8) in opposition and permanent magnets (9) in opposition and in parallel with the coils (8) in the stator and/or rotor (2); when the coi...  
WO/2006/033206A1
A stepping motor reduced in size of the outline of a housing in consideration of heat radiation and enabling the installation of a mounting plate in a saved space. A mold case (13) and the mounting plate (14) are mounted by a locked part...  
WO2005119887A3
In a preferred embodiment, an apparatus, including: first and second lamination stacks (82, 84); a permanent magnet (90) disposed between the lamination stacks; and the first and second lamination stacks and the permanent magnet being co...  
WO/2006/024344A1
The invention relates to a selector drive for automatic manual transmissions of motor vehicles, which comprises an electric motor whose rotation is transmitted to the selector mechanism for selecting a selector position by means of a mec...  
WO/2006/025170A1
A magnet rotor in which rotation prevention and positional displacement (rattling, and misalignment of axes) between a magnet and a rotor body can be restricted, a movable magnet type-instrument with the magnet rotor, and a stepping moto...  
WO/2006/019123A1
[PROBLEMS] To provide a stepping motor improved in torque characteristics by appropriating the position relation and shape of the pole teeth thereof to increase angular accuracy. [MEANS FOR SOLVING PROBLEMS] In this stepping motor, a sta...  
WO/2006/016578A1
A stepping motor reduced in size of the outline of a housing in consideration of heat radiation and enabling the installation of a mounting plate in a saved space. A mold case (13) and the mounting plate (14) are mounted by a locked part...  
WO/2005/124978A1
A small-sized stepping motor in which its rotary shaft or an output shaft disposed on the output side of its rotary shaft is improved for the purpose of achieving size reduction and motor characteristics improvement. That is, a stepping ...  
WO/2005/119887A2
In a preferred embodiment, an apparatus, including: first and second lamination stacks (82, 84); a permanent magnet (90) disposed between the lamination stacks; and the first and second lamination stacks and the permanent magnet being co...  

Matches 151 - 200 out of 9,165