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Patent Searching and Data


Matches 751 - 800 out of 16,003

Document Document Title
WO/2004/049541A1
Let (Ѳ0) be the angle formed between the end on the magnetic pole center side of a magnetic flux barrier (22) and the end of an adjacent magnetic flux barrier (22) on the side contacting a rib 23 with respect to the rotor center, f be t...  
WO/2004/047283A2
The present invention prevents peak noise caused by a resonance frequency, and reduces an overall noise of the system by binding core teeth of a stair of a BLDC motor with a vibration prevention member. To do this, the present invention ...  
WO/2004/047282A2
The present invention prevents peak noise caused by a resonance frequency, and reduces an overall noise of the system by supporting core teeth of a stator of a BLDC motor with a supporting member. For this, the present invention provides...  
WO2004021550A3
The electric machine (M) comprises an armature (A) and an inductor (B), the inductor (B) having for each pair of poles (N, S) of the armature (A), n teeth (20) identical to one another and n slots (21) and being provided with a winding (...  
WO/2004/040734A1
An electric power steering device where auxiliary steering torque generated by a brushless motor corresponding to steering torque applied to a steering wheel is transmitted with a reduced speed to an output shaft of a steering mechanism....  
WO/2004/034555A1
The invention relates to a sensor assembly for detecting rotation-related variables of a motor, in particular a windscreen-wiper motor, comprising a stationary Hall sensor. According to the invention, the motor is controlled or regulated...  
WO2003065546A3
An electric motor (10) is disclosed, the motor (10) comprising a plurality of rotors (12) and a plurality of stators (14). Each rotor (12) has a drive shaft (16) mounted in bearings (18) and a pinion gear (20) is mounted on each shaft (1...  
WO2003094324A3
The invention relates to a BLDC motor subassembly comprising a stator coil device and a motor shaft which is rotatably mounted in relation to said stator coil device and which is coupled to a rotor magnet stack in a rotationally fixed ma...  
WO/2004/025812A1
An assembly for receiving and accommodating the power electronics and control electronics of an electric motor comprises: a first printed circuit board (11) that is fitted with control electronics components (12a, 12b, 12c); a second pri...  
WO2003085805A3
A rotating electric machine comprising a stator having a first group of windings; a power source for selectively energizing the first group of windings; and a rotor having a first permanent magnet to be magnetically coupled with said fir...  
WO/2004/021550A2
The electric machine (M) comprises an armature (A) and an inductor (B), the inductor (B) having for each pair of poles (N, S) of the armature (A), n teeth (20) identical to one another and n slots (21) and being provided with a winding (...  
WO/2004/021552A1
A direct current motor comprising a rotor module consisting of a shaft and at least one permanent magnet, in addition to a stator module comprising a stator body and phase windings, two bearings which are arranged at an axial distance on...  
WO/2004/020857A1
The invention relates to a device for the axial positioning of a component on a shaft (20), comprising at least one projection (116) which is formed by means of plastic deformation on the shaft and which acts as a stop for the positionin...  
WO2003075434A3
The invention relates to a linear actuator consisting of a brushless polyphase synchronous electric motor (2) comprising a stator (3) and a rotor (4). Said rotor acts on a control element (O) via drive means (5) which can transform the r...  
WO/2004/012323A1
A motor assembly adapted to interchangeably accommodate either a resolver or an encoder. The motor assembly includes a housing having a top portion with a curved recess located therein. A rotatable shaft extends from the recess of the ho...  
WO2002020293A3
Disclosed is an electric motor system with reduced torque ripple comprising a sinusoidally magnetized permanent magnet (66), a sinusoidal inverter (50), a higher resolution position sensor, a composite iron stator yoke (70), a composite ...  
WO/2004/006415A1
The invention relates to a polyphase motor comprising windings without the overlapping of coils. According to the invention, a motor module is formed by a number of coils, which are of the same phase and which are arranged next to one an...  
WO/2004/006414A1
A four-pole synchronous motor, comprising a stator core (23) having first magnetic pole cores (36) formed on both end sides of the connection body part (24) of crisscrossed connection body parts (24, 25) and second magnetic pole cores (3...  
WO/2004/004098A1
A radial core type double rotor brushless direct-current motor is provided in which a double rotor structure is employed with inner and outer rotors which are doubly disposed and thus a stator core is completely divided. The motor includ...  
WO/2003/106244A1
A steering control device comprises a first system (SY1) and a second system (SY2) that include a first motor (36) and a second motor (37) that drive a steering mechanism (200) in accordance with rotation operation of a steering wheel (1...  
WO/2003/105318A1
A permanent magnet motor is configured with selective variation of the radial distance between an interfacing pair of rotor permanent magnet and stator pole along the circumferential length of the pair. The effects of cogging torque on t...  
WO2003055039A3
The invention relates to an encapsulated motor that comprises a rotor with a rotor shaft, a casing with a cylindrical wall, closed at the front end, and a stator, the cylindrical wall of the casing being inserted between the rotor and th...  
WO/2003/105317A1
Rotary permanent magnet motors have salient stator poles with non-uniform pole thickness in the radial direction for compensating effects of cogging torque. Pole base portions terminate at pole shoes at the radial air gap. The pole shoes...  
WO/2003/105321A1
A motor stator (3) is provided with tees (32) projecting radially inward from an outer periphery portion (31) so as to be opposed to a rotor (10). A coil (5) is wound on each tee (32), and magnets (1) are arranged on the outer periphery ...  
WO/2003/105320A1
A rotary electric motor has a stator (22) with a plurality of separate and ferromagnetically isolated electromagnet core segments disposed coaxially about an axis of rotation. Core materials such as a soft magnetically permeable medium t...  
WO/2003/105319A1
A rotary electric motor has a stator with a plurality of axially spaced sets of corresponding stator (3,6) and rotor elements (22,23,24). The stator of each set is an annular ring with poles circumferentially positioned about an axis of ...  
WO/2003/100950A1
Disclosed is an electric motor driven actuator comprising an electronically switchable direct-current synchronous motor (10) and a device working with position sensors for contactless detection of the position of the rotor (14) of the mo...  
WO2002078151A8
An electric machine (M) comprises a field (A) and an armature (B) between which is defined an air gap (G). The field (A) has at least one pair of poles (N, S) and the armature (B) has n teeth (20) and n slots (21) per pair of poles (N, S...  
WO2002086324A3
A multi-stage centrifugal compressor with an integral high-speed motor compressing a stator (52), a rotor (28) carrying permanent magnets (72a-72d), wherein there is a gap (50) between the stator (52) and the rotor (28). The rotor (28) h...  
WO2003066262A3
A method of assembling a power tool, a power tool, a method of assembling an electrical device (100), and an electrical device (100) includes a switched reluctance motor (10). The electrical device is preferably a hand-held power tool, h...  
WO2003030332A3
The invention relates to an electric motor, especially an electronically commuted d.c. motor, comprising a stator and a rotor. The stator and the rotor are coaxially arranged in relation to a longitudinal axis of the electric motor. Said...  
WO/2003/094324A2
The invention relates to a BLDC motor subassembly comprising a stator coil device and a motor shaft which is rotatably mounted in relation to said stator coil device and which is coupled to a rotor magnet stack in a rotationally fixed ma...  
WO/2003/092142A1
The invention relates to an electric drive system for a vehicle, on which a drive wheel is rotationally mounted on the frame of the vehicle in a direct or indirect manner. The inventive system contains: a force transmitting unit consisti...  
WO/2003/092143A1
The invention relates to an alternating or rotating field synchronous motor with an electromagnetic stator and a permanent magnet rotor, the permanent magnetic material of which is in the form of one or several band-, ring-, segment- or ...  
WO/2003/091737A1
The invention relates to a method and a device for determining the rotational speed and/or rotational direction and/or the position of a shaft in an electric motor. The invention is characterised in that a magnetic field generator is cro...  
WO2002063745A3
A system and method is disclosed for the construction of a frameless cartridge motor (Fig.1). In accordance with one embodiment of the present invention a frameless cartridge motor (Fig.1) is provided such that the motor's rotor (18) is ...  
WO/2003/088453A1
The invention relates to a drive arrangement with a unit comprising stator, rotor and fixed bearing in which a shaft of the motor is mounted, housed in a motor housing. An injection moulded piece comprises a plug piece on an external ann...  
WO2003005530A3
An integrated position resolver for hybrid synchronous electric motors. The present invention represents new improved integrated position resolver for hybrid synchronous electric motors which uses the magnetic flux of the motor also for ...  
WO/2003/085805A2
A rotating electric machine comprising a stator having a first group of windings; a power source for selectively energizing the first group of windings; and a rotor having a first permanent magnet to be magnetically coupled with said fir...  
WO/2003/085806A1
A rotary direct current electric motor in which rotor and stator members are each configured as annular rings, concentric with respect to each other, about an axis of rotation. Either of the rotor or stator members is formed of groups of...  
WO/2003/085807A1
A rotary electric motor in which rotor and stator members are each configured as annular rings, concentric with respect to each other, about an axis of rotation. Either of the rotor or stator members is formed of groups of electromagnet ...  
WO/2003/084034A1
A permanent magnet buried concentrated winding motor, wherein when a plurality of status teeth (2a, 2b, 2c, ...) are classified into, for example, three groups (2, 3, 4) with the plurality of adjacent status teeth allowing windings (6) t...  
WO2003052906A3
The invention relates to a brushless electric motor, comprising a rotor magnet, a coil device for electromagnetically driving the rotor magnet, a rotor shaft, for transmission of a rotational displacement, fixed to the rotor magnet and r...  
WO/2003/079520A1
An securing structure of the field coil of a DC brushless motor that provides an internal mounting structure in which a stabilized bonding strength is attained while rationalizing the bonding work process. The inner rotor magnet type DC ...  
WO2002029957A3
An electromagnetic machine includes a rotor having a plurality of poles and a stator also having a plurality of poles. The poles for the rotor are divided into a first and second set of radially opposed pairs. The first set has uniform f...  
WO2003047071A3
A rotary brushless electric motor is formed within a cylindrical rotor housing structure that surrounds an annular stator ring. The stator is formed of a plurality of individual power modules and corresponding core segments, each module ...  
WO/2003/075434A2
The invention relates to a linear actuator consisting of a brushless polyphase synchronous electric motor (2) comprising a stator (3) and a rotor (4). Said rotor acts on a control element (O) via drive means (5) which can transform the r...  
WO/2003/075438A1
An AC electric machine for vehicle comprises an AC electric machine body (100) having a rotor (10) provided with a first rotary shaft (12) rotatably supported by a pair of bearings (16 and 17), a rotor core (8) fixed to the first rotary ...  
WO/2003/073598A1
An electrical rotating machine comprises an inverter drive system (18) wherein alternating current comprising more than three phases is produced from the inverter drive system (18). The machine further includes a stator (10) comprising a...  
WO/2003/071670A1
A Polyphase induction motor is operated by an inverter drive system comprising a logic level controller. A number, preferably twelve or more, of independently driven phases causes harmonic fields , up to a number equal to the number of p...  

Matches 751 - 800 out of 16,003