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Patent Searching and Data


Matches 1,051 - 1,100 out of 16,003

Document Document Title
WO/1998/008291A1
This PMDC machine concept operates from a constant dc voltage source (30) with maximum torque capacity throughout its rotational speed range. The back electromotive force (back-emf) produced by the machine windings (21) under the constan...  
WO1997037423A3  
WO/1998/002952A1
The invention relates to a dc motor having a rotor (13) which is provided with permanent magnets and coupled to a driven shaft (9), having a stator (21) which has windings at least of one coil (19), and having a commutator device (31) wh...  
WO/1998/000902A1
The invention concerns an electronically commutated motor for direct drive of a washing machine drum, wherein the rotor (2) is fixed directly to the driving shaft of the drum, with the stator (1) being fixed to the cross-shaped support o...  
WO/1997/049440A2
A rotary pump for pumping fluids through a patient having a housing with an internal region, a stator member and an impeller positioned within the housing and having impeller blades, wherein the impeller is magnetically suspended and rot...  
WO/1997/048984A1
A permanent magnet electric motor including a rotor having an annular arrangement of field magnets for rotation around an axis relative to a stator. An annular FG magnet arrangement affixed to an end of the rotor cooperates with an adjac...  
WO/1997/045943A1
A self-starting brushless electric motor comprises a first motor part (stator) (11) and a second motor part (rotor) (16), each motor part having plurality of pole units (12U, 12V) arranged in a pole row. The motor parts are supported for...  
WO/1997/045945A1
In a permanent-magnet motor, the number of magnetic poles of a rotor (22) is 2P (P is an integer of 1 or more) and the number of salient poles of a stator field core (21) is 3P. Each salient pole section (21a) of each stator field core (...  
WO/1997/045316A1
A moving apparatus is mainly driven by man power for a man to travel and provided with a drive power assisting device. The moving apparatus detects a travelling condition by detecting a speed of rotation of a rotating unit such as wheels...  
WO/1997/045944A1
A self-starting brushless electric motor having: a first motor part (stator) (11) with poles (15S, 16A) arranged in a first pole row, said poles comprising for each winding phase a pole group (13) including a pole pair consisting of a re...  
WO/1997/044879A1
An electric motor, method of manufacturing and operating the motor is described. The motor comprises a stator (82) and rotor (74) made from an amorphous material thereby reducing grain boundaries and allowing smaller poles to be etched. ...  
WO/1997/043820A1
In a three-phase electronically commutated brushless DC-electromotor the beginnings of stator windings (k) for individual phases are spatially distributed along the periphery with respect to each other so that the created magnetic field ...  
WO/1997/039512A1
A switched reluctance motor includes a stator defining a plurality of radially-inward-extending poles (18) and a rotor defining a plurality of radially-outward-extending poles. The poles (18) of the stator define a shape in radial cross ...  
WO1997028596A3  
WO/1997/037423A2
The use of a permanent magnet synchronous motor (2) as the drive motor for a turbomachine in a domestic appliance.  
WO/1997/033364A1
According to the invention the electronic control has a power section (7) for a single-phase synchronous motor (2) with a permanent magnet rotor, in which there are means (1) for detecting the position of the permanent magnet rotor and m...  
WO/1997/033363A1
The invention relates to an electronically commutated motor with a permanent magnet rotor and a stator with a rotor position sensor (25) on the stator side which has two exclusive OR signal outputs (48, 50) and supplies an output voltage...  
WO/1997/033359A1
A motor (1) in which a driving system equipped with a stator (10) and a rotor (14) and a control system which controls the driving system and is equipped with circuit boards (21) and (22) are housed in a case (2). First conductive pins (...  
WO1997018022A3  
WO/1997/032390A1
A high-efficiency electric motor of electronic commutation type having a single stator unit and a single rotor unit comprises a first electrical submachine (M1) and a second electrical submachine (M2), in which the first submachine (M1) ...  
WO/1997/028596A2
A flywheel energy conversion device (10) provides highly efficient conversion between kinetic and electrical energy. The flywheel (10) produces increased output by providing armature coils (44) in an air gap (46) formed about the flywhee...  
WO/1997/027662A1
A motor casing comprising a first casing member (2) and a second casing member (3) joined in the direction of the axis of rotation of a motor by means of fastening members (4). The stator (61) of the motor is fixed between the members (2...  
WO/1997/026699A1
A multiple pole, multiple phase, permanent magnet motor comprising a rotor having a plurality of permanent magnet poles, a stator having a plurality of stator slots and an equal number of stator teeth defined by adjacent stator slots, an...  
WO/1997/024793A1
A high efficiency multiphasic type DC motor incorporating brushless electronic switching to phase the attractive and repulsive forces between the permanent magnets (6) in the rotor (3) and wire wound air core coils (7) in the stator (4)....  
WO1997015111A3  
WO/1997/019505A1
A ten pole/twelve slot brushless DC motor for a disk drive spindle includes a base; a cylindrical rotor structure rotating relative to the base and a generally symmetrically slotted stator structure fixed about an axis of rotation. The r...  
WO/1997/018022A2
Centrifuge apparatus for use in the analysis of laboratory samples or the like comprises a plurality of individual centrifuge devices, at least one centrifuge loading and/or unloading device (122) and control means for controlling the op...  
WO/1997/018120A1
An electric actuator is disclosed for use in a vehicle power steering system which comprises an electric motor (20) and a gearbox (22). The electric motor (20) comprises a stator (26) and an armature (27) concentric with the stator (26) ...  
WO/1997/018119A1
An electric actuator (14) is disclosed which comprises an electric motor (28) and a sensing means is provided which is adapted for detecting the angular position, and hence speed, of the rotor assembly (27) of the motor (20) by sensing t...  
WO/1997/018617A1
A motor for providing improved efficiency wherein the motor includes a plurality of coils that each produce magnetic energy which is stored in a magnetic field. A portion of the stored magnetic energy is used for operating the motor. Eac...  
WO/1997/016883A1
A motor termination board is disclosed for facilitating interconnection of control components and power components in a Brushless DC motor. The motor termination board includes a first stamping (32) having a plurality of conductive paths...  
WO/1997/015108A1
A switched reluctance machine (10) includes a first element (12) having a plurality of uniform poles (18A, 18B, 18C, ...) and a second element (12) having a first pole (22A, 22C) and a second pole (22B, 22D). The first pole has a wide fa...  
WO/1997/015111A2
A brushless dc motor assembly including a brushless dc motor, and a control board having at least one output connected to a stator winding of said brushless dc motor for providing current flow to said stator winding. Control electronics ...  
WO/1997/013986A1
The invention relates to a rotodynamic machine for conveying a fluid, like a turbo-machine (2) or a centrifugal pump, with at least one drive and bearing device (1) in the form of an electric motor with a stator and a magnetic-bearing ro...  
WO/1997/013317A1
Projections (15a), semi-projections (16a), and recesses (18a) all having a width of an electrical angle of 120� are provided to the periphery of a conductor disk (15) which rotates synchronously with a motor. A coil (10a) which only fa...  
WO/1997/012438A1
A four pole induction machine (12) with an extended speed range includes a stator with six independent stator coil groups (1-6), wherein a pair of coil groups constitutes a stator phase winding (A, B, C) and two current regulated inverte...  
WO/1997/012435A1
An efficient generator/motor comprising a rotor magnet that includes a high BHMAX permanent magnet, to generate power for a long time. The generator/motor (1) comprises a rotor (2) made of a permanent magnet, an armature (11) consisting ...  
WO/1997/008809A1
The invention relates to a motor having motor parts (10, 20) which are movable relative to one another, of which the first motor part (10) forms a multi-pole excitation field in an air gap (1) by means of a permanent magnet (11) with 2p ...  
WO/1997/008805A1
A disk shaped brushless direct current electric motor has a plastic stator disk (201) and a plastic rotor disk. The plastic stator disk (201) has an annular cavity on one face retaining a spiral coil (305) of thin lamination steel and a ...  
WO/1997/007583A1
A new class of doubly-salient machines which incorporates a specific stator/rotor pole arrangement to provide a linearly increasing flux linkage over the entire area of pole overlap, and either stationary permanent magnets (22, 24) mount...  
WO/1997/005310A1
A motorized head for multiple-head machines for twisting threads or for similar processes includes: a supporting pivot (2) for a thread spindle or reel (3); a rotor (5) that is coaxial to the pivot for unwinding and twisting the thread; ...  
WO/1997/005692A1
A reluctance motor comprising a fixed armature (1) and a rotor (5) of a magnetic substance disposed inside the armature (1) with a gap between them. Two salient poles (5a, 5b) having a width which is 2.5 times the angular pitch of slots ...  
WO/1997/004520A1
A reluctance motor including a rotor (1) having n (n: 2 or greater integer) salient poles (1a, 1b) having an equal width and disposed at equal angular intervals, and a stationary armature (16) having magnetic poles (16a, 16b, 16c, ...) w...  
WO/1997/001882A1
An electric motor or generator (10) containing one or more stationary axial coils (12) for generating magnetic fields at the poles of one or more rotors (14) which interact with two or more field poles (20A-20D) and their associated magn...  
WO/1997/001379A1
The proposed drive unit for transport devices comprises a spindle (1) with a stator (2) and, mounted on said spindle so as to be capable of rotation, a rotor (3), all these elements forming an electric motor (4); and a rim (5). The devic...  
WO/1996/041909A1
A pulsed voltage surge resistant magnet wire (18) comprising a conductor (12), a continuous and concentric and flexible uniform coat of base material (14) superimposed on the conductor (12). The shield (16) has therein an effective amoun...  
WO/1996/038903A1
A self-starting brushless electric motor having a first motor part (stator) (11) with poles arranged in a row, said poles constituting ferromagnetic poles (13S) or permament-magnet poles (14A), a second motor part (rotor) (12) with poles...  
WO/1996/037040A1
A switched reluctance motor includes an auxiliary winding interspersed among the main phase windings such that a constant inductance ratio is established between the main and auxiliary windings regardless of rotor position. The auxiliary...  
WO/1996/035257A1
A switched-reluctance rotary machine the rotor of which can turn at a high speed without causing electromagnetic vibrations of its shafts. The rotary machine includes salient poles with windings that conduct currents for generating the t...  
WO/1996/034449A1
The invention relates to a device for detecting the speed and/or direction of rotation of an electric motor, especially a permanent-magnet-excited small d.c. motor, with at least one Hall component and a component rotating with the armat...  

Matches 1,051 - 1,100 out of 16,003