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Patent Searching and Data


Matches 851 - 900 out of 15,983

Document Document Title
WO/2002/073780A1
A low-noise permanent magnet type rotary machine and a compressor of comprising it. A tooth (8) of a stator core (5) keeps the tip shaped into an arc concentric with the rotor core (3) in the tooth center side, and shaped into a straight...  
WO/2002/073216A1
The invention relates to an electric micromotor (1) comprising at least one shaft (3). The aim of the invention is to facilitate control and regulation. To this end, at least one identifying mark (4) is applied to the shaft.  
WO2001076044A3
The invention relates to a method for controlling a reluctance motor comprising a rotor (1) and a stator (10) which is provided with individual stator coils (22). A predefined current flows in the coils (22) according to the load of the ...  
WO/2002/063745A2
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/2002/060740A2
An electric power steering system for a vehicle includes a steering wheel (16) and a steering shaft (20) that is connected to the steering wheel. A worm gear (26) is connected to the steering shaft (20). A worm (28) is threadably engaged...  
WO2001033698A9
A fluid-cooled switched reluctance motor comprising a stator (50)having a plurality of evenly spaced, radially oriented, like stator poles that define a gap (58) between adjacent stator poles (56). The stator poles have side walls (56a) ...  
WO2001002724A9
A blood pump (500) preferably has a magnetically suspended rotor (502) that rotates within a housing (506). The rotor (502) may rotate about a stator (504) disposed within the housing. Radial magnetic bearings (560) may be defined within...  
WO/2002/052700A1
In order to fit a motor (12) in a housing (16) for an adjustment element, the motor (12) needs to be only axially introduced into a pot-shaped holding receiver (17). Said receiver (17) is then covered on the drive side by means of an ass...  
WO/2002/050975A2
Brushless electric machines that are operated with slotted armatures (laminated stator core) in which the stator tooth number Z is a multiple of the phase number m, in the currentless state, are subject to cogging that is the result of t...  
WO/2002/050983A1
A system and method for controlling a brushless DC motor (58) is provided. The motor (58) includes a rotor (72) and a stator (96) having at least three phases. The rotor (72) is magnetically coupled to and moveable by the stator (96) whe...  
WO/2002/041471A1
A prior art rotor has to be individually produced each time for an electric machine. An inventive rotor (1) is comprised of modules (7, 8, 9) of the same type of component, which permit the production of different rotors (1) using one ty...  
WO2001059288A3
An integrated brushless DC wet motor pump unit comprises a pump, a motor and a motor controller all contained within a housing. The motor includes a stator having stator coils fixed in relation to the housing and a motor rotor surroundin...  
WO/2002/041476A1
A brushless multiphase AC electric machine suitable for advance energization and its energization controller. In a brushless multiphase AC electric machine comprising a magnetic pole sensor (29) which senses the rotational position of a ...  
WO/2002/037643A2
A permanent magnet electric machine includes a stator with salient stator poles. A rotor (16) includes two or more axial rotor sections (72,74) that are rotationally offset by an offset angle equal to the cogging angle divided by the num...  
WO/2002/035683A1
An electric motor comprising stator (20) having a plurality of annularly equispaced stator salient poles (24), four sets of permanent magnets (12a) disposed with an equal pitch and opposed to the inner peripheral sides of the salient pol...  
WO/2002/033803A2
In torque motors known from the art a non-constant air gap is produced between the rotor and the stator that consist of sheet stacks by complex constructions on the stator. The torque motor (30) according to the invention has an unsymmet...  
WO/2002/033810A1
A multi-phase bipolar brushless D.C. motor having an embedded permanent magnet as a rotor, an armature as a stator and a plurality of windings are sub-wound on the stator in parallel and independently phase-connected. A commutation encod...  
WO/2002/029957A2
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...  
WO/2002/028536A1
A reluctance machine (1) includes a stator (20) having an annular support member with a plurality of stator poles (22) disposed thereon. The stator poles each are formed from a corresponding foil coil stator winding (26). A solid disc-sh...  
WO/2002/029959A1
The invention concerns an electric actuator consisting of at least a first P-phase automatically-switched brushless synchronous motor, P being an integer ranging between 1 and 6, and N pairs of poles at the rotor, N being an integer not ...  
WO/2002/027895A1
A brushless motor, wherein a cooling air passage (5) is formed so as not to communicate with a storage chamber (26) having a control circuit (28) stored therein and so that cooling air can be supplied to the outer surface of the storage ...  
WO/2002/025216A1
A small, lightweight and easy-to-manufacture rotational position detector exhibiting a high degree of freedom for fixing to a motor and good assembling properties to a circuit board for drive control of the motor, and a motor equipped wi...  
WO/2002/023702A1
An armature is separated into a plurality of armature blocks (4, 5, 6) and arranged in the direction of thrust. Teeth (10) the number of which is an integral multiple of the number of phases arranged at regular pitches are provided on bl...  
WO2001099259A8
In an electrical drive unit according to prior art, a signal receiver which is arranged on a printed circuit board in an electronic housing has to be brought close to a signal transmitter, thereby requiring considerable effort. The inven...  
WO/2002/020293A2
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/2002/015368A1
The present invention relates to a brushless motor having a inter-controller. It include a stator parts, which make up of a middle axis of motor, a couplet-axis cover, a core liner ring, a winding core and a winding, and a rotor parts, w...  
WO/2002/015200A2
The winding arrangement contains a multilayered winding body (91) consisting of a plurality of windings associated with a winding band (93) and an optical wave guide (30) which passes through the winding body (91) or is introduced into t...  
WO2001045248A8
The invention concerns a method which consists in supplying a first alternating signal to one end of at least a stator winding, at a specific frequency, and in recovering a measurement signal at the other end of said winding, said measur...  
WO/2002/013354A1
A brushless motor, comprising a core (21) and terminals (31) formed of coils (22) and platy metal members, wherein a plurality of terminals (31) are disposed radially beforehand and connected to each other through connection members (32)...  
WO/2002/013355A1
A brushless motor, comprising a rotor (2) having a magnet (12), a coil (22) for generating a magnetic field for drivingly rotating the rotor (2), and a power supply terminal (17) for supplying a power from the outside to the coil (22), w...  
WO/2002/009260A1
A permanent magnet AC generator (10) that includes two disc-shaped rotors (20), each with permanent magnets (22) mounted thereon, and an annular stator core (14) sandwiched between the two rotors (20) and positioned coaxially therewith. ...  
WO/2002/009257A1
The invention relates to an electronically commutated electrical machine, in particular, a motor, with a stator (30), comprising main teeth (34), divided by grooves (33) and with a stator winding (37), produced with insulated winding wir...  
WO/2002/007903A1
The invention concerns a device generating vibrations noticeable by the human body (in particular a portable telephone or portable telecommunication equipment), comprising an unbalanced rotary member (3). The invention is characterised i...  
WO2001052384A8
A brushless DC motor (58) providing higher power density and efficiency with increased tool run time. The motor (58) includes a rotor assembly (72) having a permanent magnet (74) affixed to a shaft (76). A plurality of coils (94) for pro...  
WO/2002/003531A1
The invention relates to an electric motor comprising a shaft (1; 10). Said shaft has a commutator (2; 20) and a magnetic element (3; 30), whose speed and/or angular position is detected by a sensor (4; 40). The invention is characterise...  
WO/2001/099259A1
In an electrical drive unit according to prior art, a signal receiver which is arranged on a printed circuit board in an electronic housing has to be brought close to a signal transmitter, thereby requiring considerable effort. The inven...  
WO2001010002A3
The present invention is directed to a high speed spindle motor comprising a stator assembly including a stator having multiple conductors that create a plurality of magnetic fields when electrical current is conducted by the conductors ...  
WO/2001/089064A1
A rotation sensor for sensing the rotational state of a rotary shaft, which comprises a decreased number of parts and can be fixed easily. An elongated holder receiving part (10) is formed in the rear of an opening (7b) in the case body ...  
WO/2001/086786A1
An electric motor capable of achieving a high efficiency and providing an excellent startability, wherein a rotor (10) having projected parts (10a) installed projectedly along the outer periphery of a magnetic body disk at equal interval...  
WO2001028074A3
An external rotor brushless DC motor for use in a fan, or other similar application, the motor comprising: a stator assembly base having a base plate(21); a number of stator windings (7) affixed to the stator assembly base; and circuitry...  
WO/2001/084696A1
The motor (10) has a rotor (2) which can rotate around a rotation axis (A), and a specific number (N1) of magnetic poles (12). Furthermore, the motor (10) has a stator (4) which is arranged coaxially with respect to the rotor (2) and has...  
WO/2001/082455A1
Three salient poles (15) are protruded inside an iron core (13). U, V, and W phases controlled by three-phase vector are respectively applied to the coils (14) wound around the salient poles (15). Many salient teeth (15a) provided on the...  
WO2001022558A3
A connector module (11) for an electric motor is in the form of first and second contact ball-bearing assemblies (12, 13) mounted coaxially about the motor shaft (5) in a single plane, such that a first component (15) rotates with respec...  
WO/2001/076044A2
The invention relates to a method for controlling a reluctance motor comprising a rotor (1) and a stator (10) which is provided with individual stator coils (22). A predefined current flows in the coils (22) according to the load of the ...  
WO/2001/069762A1
The invention concerns an electric machine comprising a front bearing (13), a rear bearing (14), a rotor (4) implanted between said bearings and a magnetic target (50) with axial or radial reading device fixed on a target holder implante...  
WO/2001/065666A1
The invention relates to a brushless DC-drive, with a synchronous motor, comprising a multi-phase armature winding (12) and a switch device (11), controlled by an electronic controller (16), connected in series with the armature winding ...  
WO/2001/059288A2
An integrated brushless DC wet motor pump unit comprises a pump, a motor and a motor controller all contained within a housing. The motor includes a stator having stator coils fixed in relation to the housing and a motor rotor surroundin...  
WO/2001/057991A1
An electric rotary equipment serving for the conversion of a mechanical energy into an electric energy and vice versa, consisting of a stator and a rotor, whereby a rotating part (marked with arrows) has a form of a hollow cylinder made ...  
WO/2001/057987A1
A stator lamination (20) for forming a stator assembly (82) of a permanent magnet motor (80) includes a yoke region (23) and a plurality of stator poles (22) spaced along and extending inwardly from the yoke region. The stator poles (22)...  
WO/2001/056827A1
The invention comprises a retarder system for use with road vehicles. The retarder system can combine an electromagnetic retarder with up to four functions: 1) a brushless DC alternator; 2) a brushless DC starter; 3) an active damper tha...  

Matches 851 - 900 out of 15,983