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Patent Searching and Data


Matches 1,001 - 1,050 out of 15,982

Document Document Title
WO/1999/014841A2
Disclosed is a stator for use in an electric motor, including a brushless direct current motor, which presents a stator body (9) provided with a number of stator teeth (3) for receiving stator coils (W1, W2, W3, W4), said stator body (9)...  
WO/1999/013558A1
The invention provides a direct current (DC) electric motor (1) including a rotor disc (10) capable of rotation about its main axis (12) and with a plurality of permanent magnets (7) positioned around the axis (12) of rotation of the rot...  
WO/1999/013341A1
The invention relates to a sensor device, comprising an immovably arranged magnetic field sensor configured as a Hall sensor which is magnetically coupled with at least one immovable magnetic flux conductor which detects a variable magne...  
WO/1999/009645A1
The invention relates to a separately excited electric machine with a rotor (2) and a stator (1) and a device for detecting the rotational position of the rotor with respect to the stator. According to the invention, the position detecti...  
WO/1999/008366A1
A pump comprising a pump casing having an inlet and an outlet, and an impeller having a rotary axis and being rotatably mounted within the pump casing for rotation about the rotary axis is provide. The impeller is configured and position...  
WO/1999/008363A1
Dynamo electric machines and stators for use in such machines are provided. The stators comprise plates configured to be substantilly flat and a plurality of spaced apart projections or teeth extending away from the plate and, together w...  
WO/1999/005772A1
The electric motor of this invention is a reluctance motor with a rotor (1) like a cogwheel made up of ferromagnetic materials having recesses (1b) and salient junctions (1a). Further, a position detector (6, fig. 6) is fixed at the roto...  
WO/1999/005769A1
An electronic commutated claw pole motor has an exterior rotor (42) with a shaft (40) and a rotor magnet (62). Said claw pole motor contains a stator (64) which has a first soft ferromagnetic stator pole piece (74) located on its opposit...  
WO/1999/003188A1
A brushless permanent magnet DC motor for use in a traction drive system has power density and high efficiency. The motor includes a multiple turn, fast insertion, double wave winding which does not have distinct interconnection wires be...  
WO/1999/001665A1
A d.c. controller pump (28) includes electronic control mechanisms that permit regulated control within a fluid flow system. A pump head (34) is coupled to a housing (40) allowing the fluid to infiltrate the region surrounding a permanen...  
WO/1998/058443A1
The invention relates to an electronically commutated motor, comprising a stator, said stator supporting several winding phases, with several magnetic poles and grooves, and a rotor. A defined position of the rotor and the stator in rela...  
WO1998037618A3  
WO1998026495A3  
WO/1998/047217A1
A lightweight engine-driven generator set including a stator having at least first and second windings (preferably three-phase) and a rotor having a soft magnetic core and a plurality of high energy product permanent magnets, separated b...  
WO1998029938A3  
WO/1998/044619A1
According to the method, the components (24a, 24b) of a stator (24) are slid onto a mandrel (60), said mandrel being inserted into an injection mould (50). The motor housing is produced by injecting polymeric material (63), the stator co...  
WO/1998/043689A1
The invention relates to a pump device comprising a first pump (10a) and a second pump (10b). The suction end of the first pump (10a) can be introduced into the left ventricle (42) of the heart, whilst the delivery end is positioned in t...  
WO/1998/043688A1
The invention relates to a blood pump which has a drive part (11) and a pump part (12), said pump part being extended by means of a flexible hose (13). Pressure sensors (60, 61) detect the pressure difference between the inlet end and th...  
WO/1998/041467A1
A winding device for an elevator comprises a drive sheave (16) for winding and rotating a main rope (18) which suspends an elevator cage, a stationary shaft (9) which supports revolution of the drive sheave and bears a load of the drive ...  
WO/1998/042063A1
A polyphase spindle DC motor (figure 1A, 1B) providing a torque (figure 1A) and an additional radial force (F, figure 1B) within the spindle motor utilizing the spindle components (magnets and stator laminations). Interaction between the...  
WO/1998/039836A1
In order to minimise the noise generated by an electronically switched motor, a stator winding (4) is arranged in the motor air gap (2). A first permanent magnetic rotor (6) is arranged on one side of the air gap (2) and a second permane...  
WO/1998/039833A1
A brushless direct current motor (10) includes a permanent magnet rotor (16) and a set of stator windings (14). The motor (10) further includes a circuit (22) for changeably connecting the set of stator windings (14) to operate in a firs...  
WO/1998/037618A2
A rotating electric machine using a permanent magnet rotor for use in a pump application is designed to be immersed in operating fluid with specific cleanliness requirements. The immersion obviates the need for a seal between the rotatin...  
WO/1998/035428A1
An electronically commutated brushless DC motor primarily for fractional horsepower applications of the type where at any instant one motor winding is unpowered and used to detect back EMF zero-crossings which information is used to init...  
WO1998015049A3  
WO/1998/034332A1
A dynamo-electric machine which can function as a motor or a generator. The machine comprising a stator and an armature (80), and switching of the armature coils (c1-c7) is accomplished by means of a switching control assembly which is m...  
WO/1998/033260A1
A high speed, brushless, DC motor has a rotor (10) comprising a solid rare earth magnet core (17) magnestised diametrically. The rotor (16) includes a sleeve (18) surrounding the magnet core (17) to radially constrain the core during hig...  
WO/1998/032210A1
An axial air-gap electric machine comprises a stator (10) including a supporting member (12) having one or more coil structures (20) mounted thereon. The supporting member (12) includes one or more eccentric recesses (18) to accommodate ...  
WO/1998/029938A2
The motor subjected to the present invention has an external rotor. The stator yoke (5) and the rotor yoke (2) are formed by a packing of magnetic lamination segments that are cut in 180� or smaller angles in order to complete 360� a...  
WO/1998/027638A1
A multi-pole ring magnet (10) including axially mutually interfitting disks (12, 14) of permanently magnetized material magnetized in radially opposing directions. The disks include annular support hubs (16) having an inner diameter, an ...  
WO/1998/026495A2
An axial field motor/generator (10) having a rotor that includes at least three annular discs (14) magnetized to provide multiple sector-shaped poles. Each sector (57) has a polarity opposite that of an adjacent sector, and each sector i...  
WO/1998/023024A1
This switched reluctance machine has at least six magnet yokes (11) on the stator side. The yokes are placed circularly and they carry windings (112). These yokes (11) can be placed at the inner side and/or the outer side of the rotor (1...  
WO/1998/019382A1
A process is disclosed for insulating the stator of an electronically switched d.c. motor, so as to satisfy even high insulating and safety requirements. This process has the following steps: the stator (1) is introduced into a closable ...  
WO/1998/019386A1
This invention relates to improvements in two-wire, brushless, d.c. motor (20) power control system which employs a rechargeable d.c. power source (18) (e.g. a battery or a capacitor) to provide power to commutation position sensing elec...  
WO/1998/015051A1
An improved method and apparatus for aligning and mounting a rotor position transducer element to the shaft of an electric motor. One embodiment of the invention is an apparatus and method for aligning and mounting an RPT element in the ...  
WO1997049440A3  
WO/1998/015049A2
A reluctance machine system is provided that comprises a reluctance machine having a stator defining a plurality of stator poles, a plurality of phase windings wound around the stator poles and a rotor defining rotor poles and inter-pole...  
WO/1998/010971A1
An electrical power-assisted steering system is disclosed comprising a brushless electric motor (1) which has a plurality of phase windings connected at a star point and in which a switching means (13) such as a relay is provided in at l...  
WO/1998/010504A1
As shown in the figure, a method is disclosed for manufacturing a direct current motor having a stator (104) and a rotor (102). The stator has a first number of slots, and the rotor includes a permanent magnet having a second number of a...  
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. ...  

Matches 1,001 - 1,050 out of 15,982