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WO/2001/001100A1 |
The invention relates to a method for reducing wobbling of a rotating rotor body (1) which is mounted in a freely suspended manner and which comprises reflecting surfaces (13) on the outer periphery thereof. According to the inventive me...
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WO/2000/065637A2 |
The invention relates to a device (1) for treating objects, especially silicon wafers (2), with a medium (3). The device comprises a container (4) for receiving said medium (3), a support device (5), which can rotate, which is at least p...
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WO/2000/065115A2 |
The present invention contemplates a high strength magnetic composite material system (35) comprising a plurality of high strength fibers (30) coupled together by a soft magnetic alloy (31). In one embodiment an internally reinforced str...
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WO/2000/064031A1 |
The invention relates to a rotor device (1) in which a rotor (3, 30, 32, 36, 42) interacts with a fluid. The invention is characterized in that: a) the rotor device (1) comprises a support tube (2); b) a rotor (3, 30, 32, 36, 42) is moun...
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WO/2000/064028A1 |
The magnetic members of the motor and/or a related magnetic bearing has poles (52) formed by laminations of a magnetic sheet material and slots (60) are formed between poles and are filled with material such as epoxy (65) to form a smoot...
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WO/2000/063888A2 |
Apparatus and method for controlling position of a head (120) in a disc drive (100), the head supported by a rotary actuator (110) which is in turn magnetically levitated by an active magnetic bearing assembly (112). A servo control circ...
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WO/2000/064030A1 |
The invention relates to a device for delivering single-phase or multiphase fluids without altering the properties thereof. The aim of the invention is to provide a device for carefully delivering single-phase and multiphase fluids which...
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WO/2000/058639A1 |
A magnetic bearing device, comprising at least a touch down bearing and corrugated damping members inserted into an annular clearance between the bearing and a holding member thereof, the corrugated damping members being held continuousl...
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WO/2000/050719A1 |
The invention relates to a combined bearing and drive system, which consists of a permanently excited magnetic support system comprising at least one stationary and at least one mobile magnet bar, where pairs of opposite stationary and m...
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WO/2000/045059A1 |
A controlled magnetic bearing device capable of floating and supporting a rotary body stably by generating a control signal on the basis of a sensor signal coming from a displacement sensor for detecting radial displacement of the rotary...
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WO/2000/041290A1 |
The invention relates to a magnetic circuit structure in an apparatus in which the first machine means is a stator (1) with a winding (3) and the second machine means is a rotor (2). The magnetic circuit is arranged to generate a force e...
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WO/2000/034674A1 |
A thrust bearing arrangement for a rotary shaft includes a main bearing (60) mounted on the rotary shaft (63) at a first axial location and an idler bearing (62) mounted on the shaft (63) at a second axial location spaced from the first ...
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WO/2000/032257A1 |
An implantable rotary blood pump including a rotor mounted for rotation within a pump housing. The rotor has a shaft portion and an impeller carried by the shaft portion. A rotor motor is provided, with the motor including a plurality of...
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WO/2000/026084A1 |
Disclosed is a torque/reactive momentum wheel control system (300) for use in satellites for dynamic attitude maintenance and alteration where the flywheel of each momentum wheel (302a, 302b, 302c, 302d) is levitated by a high-temperatur...
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WO/2000/022311A2 |
The invention relates to a magnetic bearing, wherein a first part (1, 20) is magnetically mounted in relation to a second part (3, 10) and the second part (3, 10) has a supraconductive material (2) of a second type containing an anisotro...
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WO/2000/011360A1 |
A tilting pad journal bearing (2) comprises a bearing shell (4) having a substantially cylindrical inner surface and at least three bearing pads (5, 6, 7) extending around the inner surface of the bearing shell in a substantially circumf...
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WO/2000/007280A1 |
Rotor systems are provided comprising rotor, magnetic bearings and a magnetic bearing controller. The controller is one which varies in accordance with linear parameters and is preferably responsive to linear matrix inequalities. High sp...
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WO1999061810B1 |
The invention relates to a motor mount for small high-speed motors, consisting of radial and axial bearing components. The axial bearing is configured as a magnetic bearing and the radial bearing as an air bearing.
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WO/1999/064753A1 |
The invention relates to a magnetic bearing cell (1) comprising rotating bearing parts having at least two disks which are fixed on a shaft and each provided with one ring-shaped permanent magnet (5, 6, 7), as well as fixed bearing parts...
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WO/1999/064754A1 |
A magnetic actuator core is provided for a radial bearing that supports a rotor for rotation about an axis. The magnetic actuator core includes a back iron, and a plurality of poles spaced circumferentially about the axis and extending r...
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WO/1999/053974A2 |
A pump for pumping sensitive fluids, such as blood, having no mechanical contact between the impeller and any other structure. The pump comprises a pump housing (4), an impeller (7) disposed within the pump housing, a magnetic bearing sy...
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WO/1999/050950A1 |
A support assembly (14) as shown in the figure for supporting a rotating shaft relative (10) to a structure (70) in which a first magnetized member (90) is attached to the shaft for rotation therewith, a support member (20) is connected ...
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WO/1999/046510A1 |
A vacuum pump is provided with back-up bearings (32, 36) in addition to magnetic bearings (24) for supporting its rotor (20) with respect to the pump housing. The rotor (20) has a hollow rotary shaft (25) extending backwards enclosing in...
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WO/1999/046509A1 |
A vacuum pump has a back-up bearing assembly (15a, b) for allowing its rotor (14) to spin down safely without damaging the pump if the primary system (16a, b) becomes disabled. The drive shaft (10) of the rotor (14) is tubular and contai...
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WO/1999/046508A2 |
A vacuum pump with a magnetic bearing assembly includes the magnetic bearing assembly with rotor position sensors and backup bearings being placed inside the rotatable shaft of the vacuum pump. The sensor placements are independent of th...
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WO/1999/042731A1 |
A circulation fan apparatus including a hermetic vessel (1) containing a corrosive process gas therein, and a circulation fan (2) installed in the hermetic vessel, rotors (2-1, 2-2) of the circulation fan are rotatably supported by beari...
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WO/1999/041505A1 |
A hydrostatic servo positioning system and hydrostatic thrust bearing for an integral motor/generator and pump/turbine provides recirculating seal liquid through the positioning system and bearings to permit minimal seal liquid flow. In ...
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WO/1999/041510A2 |
It is an object of the present invention to provide a magnetic bearing controller which is able to levitate the controlled object stably by using controlled magnetic forces. In the magnetic bearing controller which supplies a controlled ...
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WO/1999/040334A1 |
The invention relates to a method for controlling systems which have winding for carrying power and winding for torque. The systems are controlled by electric drives having an integrated magnetic bearing. The drives comprise an electrica...
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WO/1999/039424A1 |
An electric machine includes a cylindrical rotor made up of an array of permanent magnets that provide an N-pole magnetic field of even order (where N = 4, 6, 8, etc.). This array of permanent magnets has bars of identical permanent magn...
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WO/1999/037912A1 |
In one aspect, the invention is concerned with a machine comprising: an annular stator-ring; an annular rotor-ring rotatable within or outside said stator-ring, and preferably at least substantially co-axial therewith; magnetic means, pr...
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WO/1999/036704A2 |
A novel magnetic bearing assembly is disclosed where mutually repulsing magnetic fields are generated between an inner housing and an outer housing. In the preferred embodiment, these fields are located in pairs of cooperating rings, one...
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WO/1999/031390A1 |
The invention relates to a method for generating over-pressure gas by means of a kinetic compressor which is coupled to a high-speed electric machine located on the same shaft (A) with the compressor and comprising a rotor (3) whose rota...
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WO/1999/028640A1 |
A magnetic bearing control device and a turbo-molecular pump device which can stably control the position of a body to be floated to an aimed position even when the length of a cable connecting a magnetic bearing to a controller changes....
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WO/1999/017034A1 |
There is described a support system enabling supporting an object such as a platform (1) free from vibration, in that bearing elements (50) have a stiffness (k) which at a working point (z¿0?) equals zero. A bearing element (50) compris...
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WO/1999/014503A1 |
The invention concerns a rotary pump (PP) for sucking in a liquid such as hydrocarbon comprising a pump wheel (1) integral with a rotor (4) immersed in part of the liquid sucked in by the pump. A motor (11) comprising a stator element (1...
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WO/1999/012587A1 |
A pump assembly (1, 33, 200) adapted for continuous flow pumping of blood. In a particular form the pump (1, 200) is a centrifugal pump wherein the impeller (100, 204) is entirely sealed within the pump housing (2, 201) and is hydrodynam...
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WO/1999/011848A1 |
A spinning device of a rotor spinning machine comprising a spinning rotor (41) made of magnetically hard material, seated for rotation in an air chamber connected with an underpressure source. A stator (42) comprising at least two electr...
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WO/1999/005418A1 |
The invention relates to a mounting for a turbo-machine rotor (16). Said mounting is characterized in that radial support of the rotor is assured by one or more permanent magnet bearings (20, 22). One or more single-thrust sliding bearin...
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WO/1998/059406A1 |
The invention relates to an electric drive with magnetic bearings, comprising an electric machine with magnetic bearings, said machine having windings built into the stator or rotor for producing the torque and the carrying force, and an...
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WO/1998/059407A1 |
The invention relates to a electric drive mechanism with a magnetic bearing. The inventive electric drive mechanism comprises an electric machine with a magnetic bearing, mechanical and magnetic bearing windings being provided in the sta...
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WO/1998/057776A1 |
A position detector using a magnetic bearing spindle with which both working and position detection can be made. The magnetic bearing spindle (20) is moved toward a work (3) on the X-Y coordinates and a tool (31) is brought into contact ...
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WO/1998/057117A1 |
A flux position sensor (72) for magnetic bearings applications is provided by creating a secondary, or shunt, flux path in parallel with a main flux path of a magnetic bearing (62). The secondary flux path is formed such that a small amo...
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WO/1998/057414A1 |
An improved frictionless bearing system comprising a multiplicity of journal bearings (25, 27) and thrust bearings (45). Each journal bearing (25, 27) consists of a shaft magnet (40, 90) enclosed by an outer journal magnet (30, 80) of th...
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WO/1998/054475A1 |
Bearing device of magnet type for instruments and the like and non-contact support of one part relatively to another part by means of magnet fields wherein the one part is rotatable relatively to the other at least a part of a full turn....
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WO/1998/052271A1 |
The invention concerns a direct current electric motor with a reference axis Z-Z and comprising a first body (A) bearing a first polar part (11), a second body (B) bearing a second polar part (12), said first body and second body having ...
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WO/1998/052200A1 |
A magnetically soft Co-Fe-C alloy is disclosed which contains in weight percent, about carbon 0.05-0.50; manganese 0.5 max.; silicon 0.5 max.; phosphorus 0.01 max.; sulfur 0.01 max.; chromium 1.0 max.; nickel 1.0 max.; molybdenum 0.25 ma...
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WO/1998/046895A1 |
A method of controlling switching of a tri-state switching amplifier having two switching legs, two switches in each leg, and a load connected to the junction between the switches of each leg, a power supply and a capacitor connected to ...
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WO/1998/043341A1 |
A power supply device for providing uninterrupted power for a period of time is disclosed. The power supply device has a controller and a flywheel device. The flywheel device has a housing (45) that contains a flywheel rotor (15) and a m...
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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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