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WO/1998/040955A1 |
A flywheel energy accumulator has a vertical shaft and passive, superconducting magnetic axial bearings (SML) mounted thereon, as well as an inner rotor electric motor/generator whose rotor is mechanically coupled to several flywheels an...
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WO/1998/037335A1 |
The invention relates to a magnetic bearing and drive comprising a stator and a movable element, wherein the stator and the movable element are components of a magnetic circuit, comprising at least one primary wire winding and a secondar...
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WO/1998/036845A1 |
A centrifugal separator (10) comprises a housing (11) through which extends a spindle on which is mounted a centrifuge rotor (20). The rotor is mounted on journal bearing bushes (31 and 32) that are lubricated by the liquid supplied at p...
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WO/1998/035167A1 |
The invention concerns a 1-active-axis rotary magnetic bearing comprising: a first portion including, around a rotation axis, two ring-shaped radially internal (23) and radially external (24) polar parts and a ring-shaped magnet with per...
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WO/1998/032973A1 |
High velocity vacuum pump, such as turbomolecular pump, drag pump, centrifugal pump or the like, comprising a stator (10) and a rotor, which is axially and radially suspended with respect to the stator (10) by magnetic bearings (27). The...
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WO/1998/032981A1 |
Device for magnetic suspension of a rotor (10, 20, 30) in relative rotational movement along a predetermined rotation symmetric path with respect to a stator (14, 24, 26, 34, 36). Rotor (10, 20, 30) comprises a rotational body (11, 21, 3...
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WO/1998/031946A1 |
The invention relates to a sensor-free magnetic bearing actuated according to the modulation method. The position information required for regulating the magnetic bearing is obtained from the air-gap dependent properties of the impedance...
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WO/1998/031947A1 |
For the support of deflection rollers(1) in molten metal, ball bearings (3, 4, 5) with low osculation (9) are used in order to compensate temperature-dependent length variations. The thus reduced axial guidance is improved by magnets (10...
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WO/1998/023876A1 |
The invention provides improved magnetic bearings intended to function successfully at elevated temperatures, particularly temperatures in excess of 600 �C. The invention provides the magnetic bearing in the form of a number of decoupl...
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WO/1998/013612A1 |
An electromagnetic suspension apparatus is disclosed which comprises a pair of oppositely arranged electromagnets (3, 4), each of which has at least one coil for applying suspension forces to a rotor (2) to be suspended when electrical p...
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WO/1998/011284A1 |
The invention concerns a pot spinning device (2) with a spinning housing (16), a spinning centrifuge (11) which rotates inside the latter at a high speed, and a rotatably mounted centrifuge casing (20) which is disposed between the spinn...
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WO/1998/011650A1 |
The invention concerns a rotary pump (3) having a housing (9) and a rotor (2) with blades (1b) which is placed inside the casing. The rotor (2) comprises a passive magnetically active rotor part (1) and the housing (9) is surrounded by a...
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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/1997/048169A1 |
A bearing system for positioning and supporting a rotor having a vertical shaft (20) coincident with a main rotation axis included in a flywheel (10) used for energy storage and high surge power in vehicular applications. The bearing sys...
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WO/1997/041365A1 |
A damper film bearing assembly (10) for supporting a rotatable shaft (11) of a turbomachine includes a housing (22) having a central bore sized to receive the bearing member, and an annular cavity (34) formed within the housing around th...
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WO/1997/037146A1 |
A device including a reference ring (50) made of a low-resistivity non-magnetic material and mounted on the rotor, stator coils adjacent to the reference ring (50), and AC power supply means for the coils, is disclosed. A ring-shaped rac...
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WO/1997/036361A1 |
A method of damping resonances in a rotating system is disclosed, which includes developing a representation of vibrating movement in the rotating system, taking the derivative of that representation and applying an out-of-phase active d...
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WO/1997/034361A1 |
The technical field of the invention is electric machines consisting of a stator and a rotor. The object of the invention is to simplify the mounting of these machines and simultaneously design them such that they are loss-free and have ...
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WO/1997/032386A1 |
The invention concerns a flywheel energy accumulator which has a vertical shaft and comprises an upper flywheel and a lower flywheel which are driven by a homopolar machine and are jointly mounted at a mutual spacing on the rotor shaft o...
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WO/1997/031193A1 |
A rotor arrangement (10), particularly a shaft suspended in a magnetic bearing arrangement having an active axial magnetic bearing (12), includes an axial shaft displacement sensor (26) and a displacement rate transducer (32) which co-op...
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WO/1997/029795A1 |
This invention is an implantable rotary blood pump without a shaft seal. The pump includes rotary element (18) having a pump impeller (38) at one end. The rotary element and the impeller are maintained in radial alignment by respective, ...
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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/1997/026224A1 |
The invention concerns a process for producing optimized melt-textured volume probes based on the high-temperature superconductor YBa2Cu3O7 (YBCO) for use in contact-less self-stabilizing magnetic bearings. The object of the invention is...
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WO/1997/024537A1 |
A backup bearing (30) for supplying backup to magnetic bearings is provided, the backup bearing comprising: an outer race (32) disposed about the axis (Y) of a stationary shaft (17), the outer race mounted to a flywheel assembly (16) for...
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WO/1997/024536A1 |
Bearing systems, such as magnetic bearings, are widely used today in a variety of applications. All bearing system are, however, subject to failure. Therefore, backup systems are often utilized in conjunction with a main bearing system i...
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WO/1997/024535A1 |
Bearing systems, such as magnetic bearings, are widely used today in a variety of applications. All bearing systems are, however, subject to failure. Therefore, backup bearing systems are often utilized in conjunction with a main bearing...
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WO/1997/022850A1 |
A position sensor is structurally integrated within a wide-gap magnetic actuator. Being an integral structure, the sensor provides voltages representative of a relative shift in position of the actuator's armature and pole piece from the...
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WO/1997/019273A2 |
The invention relates to a magnetic bearing for the contact-free support of a moving, specifically rotating, body (hereinafter referred to as the rotor (1)) in relation to a fixed part (hereinafter referred to as the stator (8)), at leas...
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WO/1997/016882A1 |
Systems employing passive magnetic bearing elements having minimal power losses are provided. Improved stabilizing elements are shown, employing periodic magnet arrays (10, 12) and inductively loaded circuits (18, 19), but with improved ...
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WO/1997/015978A1 |
A rotary motor and a rotary magnetic bearing are integrated in a compact assembly (10) that is contactless. A stator assembly (16) surrounds a ferromagnetic rotor (18) with an annular air gap (20) which can accommodate a cylindrical wall...
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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...
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WO/1997/013985A1 |
A magnetic bearing device comprising a protective bearing that makes contact with a rotating shaft in the beginning to prevent vibrations so that the shaft speed may increase stably and reach a steady state. A frusto-conical portion (24)...
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WO/1997/013313A2 |
An energy storage and conversion apparatus (1) comprising a containment (5) defining a vacuum chamber (7), a support shaft (9) within the vacuum chamber (7), a stator (11) on the shaft (9) and a cylindrical rotor (13) which, in use, is d...
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WO/1997/009540A1 |
A suspension system for magnetically suspending an object (O) comprises an electromagnetic coil (L) having an axially extending core (13) of magnetically permeable material and a permanent magnet (14) disposed on its axis. A permanent ma...
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WO/1997/009664A1 |
A mixed-mu superconducting bearing (10) including a ferrite structure (20) disposed for rotation adjacent a stationary superconductor material structure (14) and a stationary permanent magnet structure (12). The ferrite structure (20) is...
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WO/1997/008807A1 |
The invention relates to a canned electric motor for a centrifugal pump, having a rotor (3) with an axis of rotation (A) and a stator (4), in which the rotor (3) is a hollow cylindrical outside rotor running in the direction of the axis ...
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WO/1997/008808A1 |
A canned motor has a rotor (3), a stator (4) and a can (18) arranged between the rotor (3) and the stator (4). At least two bearings (30a, 30b, 30c) are mutually spaced in the axial direction (A) in relation to the rotor (3). At least on...
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WO/1997/007340A1 |
The invention relates to a contactless bearing for a rotor (1) by means of induction motor stators (3, 4). The induction motor stators (3, 4) are magnetically coupled on the one hand via the rotor (1) of ferromagnetic material and on the...
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WO/1997/007341A1 |
A radial active magnetic bearing device (6) comprising at least three distributed electro-magnets (2u, 2v, 2w) is controlled by a three-phase power controller (10).
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WO/1997/004243A1 |
An electromagnetic radial bearing (30) has diametrically opposite pole arrangements in pairs (15'1, 15'3 and 15'2, 15'4) which have limbs (191A, 191B, 191C, 192A etc.) spaced apart circumferentially of a rotor (11), each limb carrying bo...
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WO/1997/002732A2 |
A magnetic bearing with reduced control-flux-induced rotor loss includes a rotor (14), and a stator (12) having a plurality of slots (S1-S16) around which coils (150-156) of a first Phase A and coils (160-166) of a second Phase B are wou...
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WO/1997/003301A1 |
A magnetic bearing with reduced bias-flux-induced rotor loss includes a stator (12), a rotor (14), the stator (12) having a configuration which minimizes a gap (g1) between stator teeth (80) thereby providing a more nearly uniform spatia...
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WO/1997/002437A1 |
A hybrid foil/magnetic bearing is disclosed wherein the foil bearing segment is removably inserted within a magnetic bearing operation.
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WO/1997/002641A1 |
The invention relates to a bearing construction in an asynchronous electric machine, particularly a magnetic-bearing construction. The machine comprises a body; a rotor shaft (1) arranged to rotate in relation to the body; a squirrel-cag...
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WO/1996/041409A1 |
A magnetic bearing apparatus and a method for providing at least one stabilizing force in a magnetic bearing structure with a superconducting magnetic assembly (12, 42, 82, 102) and a magnetic assembly (30, 60, 92, 112), by providing a s...
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WO/1996/041124A1 |
A fiber optic sensor for magnetic bearings includes a stator (12), a rotor (14), and an optical transmit/receive fiber (50) which propagates transmit light (112) which is launched across a gap (15) between the stator and the rotor and wh...
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WO/1996/029775A1 |
In a magnetically mounted, position-stabilised flywheel, the force-generating systems (M1) at least for the rotary drive are designed to operate on the electrodynamic principle and located inside the wheel hub. The coils are situated on ...
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WO/1996/029522A1 |
In a magnetically mounted oscillation-damped flywheel, both the force generating systems (M1, M2) for the radial drive and transverse movement and the corresponding control sensors (SE1...SE4) are located in the wheel hub. Parasitic osci...
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WO/1996/022475A1 |
The magnetic bearing for the magnetically active centering, along a centering axis, of a second body (B) in a relative motion with respect to a first body (A) comprises in particular an actuator (12) comprising at least a first ferromagn...
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WO/1996/018805A1 |
The bearings (3, 4) of the shaft (2) of a turbine (1) have each a first bearing part (3a, 4a) joined to the shaft and a second fixed bearing part (3b, 4b). In order to make the bearings (3, 4) inherently stable, one of both bearing parts...
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