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Patent Searching and Data


Matches 1,101 - 1,150 out of 16,057

Document Document Title
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...  
WO/1996/031934A1
The invention concerns a rotary machine which comprises a driven rotor (2) and an electric motor (4, 14), with a stator (4) and a driving rotor. The stator (4) is also in the form of an electromagnetic bearing (4, 14) for the driving rot...  
WO/1996/028874A1
A self-starting controllable motor having a rotor mounted for rotation with a peripheral segmented portion formed of permanently magnetized material, a stator formed of laminated magnetized material having two legs surrounding the rotor,...  
WO1996022629A3  
WO/1996/027940A1
An electric machine has a separately excited rotor arrangement (1) that generates magnetic fields that follow each other in the direction of displacement (3) of the rotor and that correspond each to a whole magnetic period. The electric ...  
WO/1996/025320A1
The powerplant (17) for wheeled vehicles (10) has a permanent-magnet rotor (18, 19) of an electric motor associated with at least one wheel (12). The stator (21-23) of the motor has electromagnets (21) the number whereof is a multiple of...  
WO1996009679A3  
WO/1996/022629A2
A brushless DC motor comprises a rotor (20) and a stator (22) having confronting surfaces. Permanent magnets (M) are provided at one of the confronting surfaces, the magnets being equally angularly spaced around an axis (A-A) of rotation...  
WO/1996/021265A1
The aspects of this invention are the twelve offset PM toroid/rotors. These toroids are angularly off-set to a thirty degree arc. This alignment is electromechanically complemented by the helical windings of the stator (18), which are se...  
WO/1996/018287A1
An electrical rotating machine consisting of an induction machine operated by an inverter drive system, wherein many phases are used in place of the conventional three. The use of many phases has benefits not anticipated by the art, the ...  
WO/1996/017429A1
A commutatorless polyphase AC electric machine including a rotor core with a surface having alternating parallel projections and slots. Each slot has an opening at the stator surface which is substantially as wide as the widest portion o...  
WO/1996/015582A1
A flat reluctance type three-phase motor which can output a large torque and can rotate at a high speed is constituted of a flat fixed armature (16) having magnetic poles the number of which is an integral multiple of three on its outer ...  
WO1996003796A3  
WO/1996/009679A2
A machine comprising a stator and a rotor, where the stator includes at least one winding and the rotor comprises a body of soft magnetic material with a plurality of permanent magnets in a surface disposed proximate to the stator, with ...  
WO/1996/009683A1
This motor has a special magnetic circuit which enables it to be powered by a very simple electronic circuitry. This motor has, according to the figure, four U-shaped Yokes (11, 112) with eight unevenly spaced poles (111) surrounding a r...  
WO1996001001A3  
WO/1996/006793A1
In a permanent magnet synchronous motor (21) comprised in an elevator machinery (6), angle measurement is implemented by detecting the position of a rotor pole by means of a detector (1) measuring the magnetic field. The magnetic field g...  
WO/1996/003793A1
A permanent magnet housing (3b) and a magnetic gap (3c) are formed in a rotor (3), and a permanent magnet (4) and its position are set designed so that the minimum value of the distance from a portion of a boundary surface of the permane...  
WO/1996/003796A2
An electrical machine of the reluctance or permanent magnet type includes one or more pawns (24) of high permeance material which are relatively moveable along a plurality of C-shaped stators (20) which are regularly spaced at a predeter...  
WO/1996/002971A1
In a variable speed electronically switched d.c. motor, the stepwise or stepless speed adjustment is provided by means of the electronic variation of the current conduction angle between 90 �el and 180 �el. The phase winding of each ...  
WO/1996/001000A1
To improve the power of an electric asynchronous machine comprising a rotor, a stator, a winding allocated to the stator or rotor with at least two legs by means of which a circulating polar field can be generated and at least one curren...  
WO/1996/001001A2
In order to provide an electric motor, comprising a housing, a rotor (10) rotating about an axis (12) therein, a stator (50) fitted in the housing, a winding allocated to the stator or the rotor and a control circuit controlling the fiel...  
WO/1995/034935A1
The electric motor comprises a rotor (14) with a flat, permanent magnetic disc (15) which is rotatable about an axis of rotation (10), and an electromagnetic stator (16) with a stack of flat, electrically insulating supporting elements (...  
WO/1995/027326A1
A flywheel system having permanent magnets (20) embedded in a flywheel (10) rotating about a shaft (16) is provided with a stator (28) which is slidably mounted to the shaft (16) thereby allowing a gap g1 between the stator (28) and the ...  

Matches 1,101 - 1,150 out of 16,057