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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 ...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 ...
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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...
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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 ...
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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...
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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...
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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 ...
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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...
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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 ...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 (...
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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...
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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...
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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. ...
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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 ...
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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 ...
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WO/1997/037423A2 |
The use of a permanent magnet synchronous motor (2) as the drive motor for a turbomachine in a domestic appliance.
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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...
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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...
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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 (...
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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) ...
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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...
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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...
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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...
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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)....
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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...
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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...
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