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Patent Searching and Data


Matches 501 - 550 out of 10,759

Document Document Title
WO/2005/121580A1
A magnetic bearing device and a method of operation for such a device are provided. The device comprises a group (410) of electromagnetic actuators (411, 412, 413, 414). Each actuator is electrically connected to an amplifier unit (701)....  
WO2005078294B1
The present invention provides a radial foil bearing for supporting a high-speed rotating shaft. The radial foil bearing comprises a top foil (1): a key (2) welded to a cut portion of the top foil; an inner bump coil (3) disposed outward...  
WO/2005/119072A2
A fluid dynamic bearing (1) with a rotating shaft (3) inserted into a sleeve (2) fitted into a case (7) is disclosed. Tree rotating shaft (3) rotates freely without contact with the sleeve (2) by means of dynamic pressure force generated...  
WO2005047717A3
A fluid dynamic bearing mechanism (1) that can ensure bearing rigidity, reduce shaft loss torque, reduce power consumption, stabilize axial rotation, and improve rotational accuracy is disclosed. The fluid dynamic bearing mechanism (1) i...  
WO/2005/113995A3
A hydrodynamic bearing having a bearing sleeve (7), a rotational shaft (11) supported for rotation by the bearing sleeve, a bearing gap (21) formed between the bearing sleeve and the rotational shaft, lubrication oil (12) contained withi...  
WO/2005/113995A2
A hydrodynamic bearing having a bearing sleeve (7), a rotational shaft (11) supported for rotation by the bearing sleeve, a bearing gap (21) formed between the bearing sleeve and the rotational shaft, lubrication oil (12) contained withi...  
WO/2005/106266A1
The invention relates to an oil film bearing, for roller pins, which is, or the pin bush fixed thereon, is enclosed by a bearing bush, arranged in a modular piece, whereby the bearing bush comprises at least two internal hydrostatic pock...  
WO/2005/106293A3
A shaft seal or position sensor module assembly (10) includes a carrier body (12) that is mountable on a shaft housing about an opening through which a rotatable shaft extends. A sleeve (18) is mountable on the shaft and carries a multi-...  
WO/2005/106267A1
A slide guiding device 13 in a machine tool 10 is provided with slide guiding surfaces 21 provided on a bed 11, sliding surfaces 22 provided on a column 12, which is guided on the bed 11 for movement on the same, and movable on the slide...  
WO/2005/103517A1
An active magnetic bearing (100) with automatic detection of the position thereof, comprising antagonistic first and second electromagnets (120, 130) forming stators disposed on both sides of a ferromagnetic body (110) forming a rotor ma...  
WO/2005/085663A1
A magnetic bearing and a turbo-molecular pump having it in which the cost of manufacturing and installation of the turbo-molecular pump can be reduced by decreasing the number of elements of an amplifier circuit for exciting/driving an e...  
WO/2005/083280A1
A fluid dynamic bearing mechanism for a motor (1) suitable for use in a hard disk drive and having a compact and thin shape, high bearing rigidity, and high rotating accuracy, and which securely keeps the rotor member (6) in place agains...  
WO2005017375A3
Radial loads and vibrations and axial loads on a rotor are balanced by a fluid bearing controlled by a self-regulating system that supplies fluid flow or pressure to the gap between the rotor and stator in response to signals of imbalanc...  
WO/2005/078294A1
The present invention provides a radial foil bearing for supporting a high-speed rotating shaft. The radial foil bearing comprises a top foil (1): a key (2) welded to a cut portion of the top foil; an inner bump coil (3) disposed outward...  
WO/2005/057156A1
A pivotally supporting device of a balance correcting device measuring an unbalance force, comprising a journal pivoting part having a mandrel pivotally supporting a rotating body around a vertical axis, wherein a thrust pivoting part pi...  
WO/2005/047717A2
A fluid dynamic bearing mechanism (1) that can ensure bearing rigidity, reduce shaft loss torque, reduce power consumption, stabilize axial rotation, and improve rotational accuracy is disclosed. The fluid dynamic bearing mechanism (1) i...  
WO/2005/045266A1
Power amplification devices (15, 16) include: a current instruction device (17) for outputting a current instruction signal based on the current target value to be supplied to electric magnets (4, 5); a power amplifier (18) for amplifyin...  
WO/2005/017377A1
An oil film bearing (1) for roll pins (4), which or whose pin bush (3) that is placed thereon is surrounded by a bearing bush (3) placed in an insert (2). The bearing bush has at least two inner lying hydrostatic pockets (9, 9'), which a...  
WO/2005/017375A2
Radial loads and vibrations and axial loads on a rotor are balanced by a fluid bearing controlled by a self-regulating system that supplies fluid flow or pressure to the gap between the rotor and stator in response to signals of imbalanc...  
WO/2005/011910A1
The invention relates to a device which supplies minimum lubrication amount to a quickly rotating spindle and is embodied in the form of a rotary transmission leadthrough. A bearing hausing (1) is provided with connections (14, 15, 16) f...  
WO2003101695A3
A machining spindle comprising an inner shaft (110a) arranged for carrying a first tool (5a) for machining a workpiece and an outer shaft (110b) arranged for carrying a second tool (5b) for machining the workpiece, wherein the shafts are...  
WO/2005/010381A1
The present invention relates to a new kind of foil bearing. The present invention relates to a bearing comprising a flexible foil (1) with a self-aligning mechanism (5, 11). The present invention furthermore relates to a foil bearing en...  
WO/2005/003580A1
A magnetic bearing device having large cooling effect achieved by a simple structure. Fins (15) for forming a backward air flow are provided on the rear outer diameter portion of a rotation shaft (1). A generator (16) converting the air ...  
WO/2005/001844A1
A supporting unit in a moving table device, capable of being easily connected between a base and a table. A supporting unit (U&agr ) has a pair of planar bearing plates (31a, 31b). Inside the planar bearing plates (31a, 31b) are arranged...  
WO/2004/109134A1
Applied to an object that is comprised of a main body (4) with a pressurization chamber (5) inside it and with the upper central part (3) designed in spherical coordinates, serving as the base to support a segment of a sphere (2). Betwee...  
WO/2004/104379A1
The invention relates to a bearing for axially mounting a rotor (8) of a gas turbine. Said bearing comprises a bearing body (2) that is disposed stationary relative to the position of the rotor (8), a hydraulic piston arrangement (3, 4) ...  
WO/2004/083661A1
A gas bearing for rolls or rollers fitted with a fixed axle (22) around which is arranged a rotatable shell (21) comprised of one or more parts, for example segments, which shell is bearing-mounted to said axle by means of a gas bearing ...  
WO/2004/076876A1
A control system of a magnetic bearing, comprising a microprocessor, and having a high control performance even though inexpensive A/D converters are used. An A/D converter 31 is of high speed type having a short conversion time. A large...  
WO2004030542A3
In a diagnostic imaging apparatus, a stationary gantry (24) and a rotating gantry (22) are interfaced by a plurality of air bearing elements (40). Lower air bearing elements bear the weight of the rotating gantry (22) which induce air ha...  
WO/2004/055401A1
A gas bearing system comprising two opposing and substantially parallel bearing surfaces (2,4) and at least one gas duct (6) for supplying gas to the bearing gap (5) between said bearing surfaces (2,4). A cavity (10,14,15,18,19) having a...  
WO/2004/055400A1
A gas bearing system comprising to opposing substantially parallel bearing surfaces (2, 3) and at least one gas duct (6) for supplying gas through an orifice (7) to the bearing gap (5) between said bearing surfaces (2, 3). At least one o...  
WO2004022988B1
A magnetic bearing device has a rotating bearing (20) fixed to a rotating shaft (10) and a fixed bearing (30) supporting the rotating bearing (20) without contact. The rotating bearing (20) is made from a permanent magnet with a convex-s...  
WO2003027520A8
The present invention relates to a passive and active magnetic bearing using the Lorentz force, which consists of a rotor with a permanent magnet at its center and several coils which are located at an outside axial air gap of the rotor ...  
WO2003103893A9
A solution is presented for high speed rotating devices, in particular cutting tools, whereby the said rotating device (1) is made monolithic with its shaft and the bearing system, needed to support it during rotation, uses the surfaces ...  
WO/2004/031600A1
The aim of the invention is to create a guide shoe bearing for rotary drums, e.g. tube mills, that can be easily constructed and economically manufactured while, nevertheless, ensuring that, during operation, it can take part in all angu...  
WO/2004/030542A2
In a diagnostic imaging apparatus, a stationary gantry (24) and a rotating gantry (22) are interfaced by a plurality of air bearing elements (40). Lower air bearing elements bear the weight of the rotating gantry (22) which induce air ha...  
WO/2004/022988A1
A magnetic bearing device has a rotating bearing (20) fixed to a rotating shaft (10) and a fixed bearing (30) supporting the rotating bearing (20) without contact. The rotating bearing (20) is made from a permanent magnet with a convex-s...  
WO/2004/020852A1
A self-compensating hydrostatic (pressurized fluid film) linear bearing that maintains a fluid gap between a carriage and a rail when relative forces are applied. The geometric shape of the rail and mating carriage enable the bearing to ...  
WO2002103215A8
The invention relates to an emergency bearing for a rotary machine with magnetic bearings consisting of an emergency undercarriage device comprising an intermediary element (9) having a large contact surface with a stator element (10). S...  
WO2003103893A3
A solution is presented for high speed rotating devices, in particular cutting tools, whereby the said rotating device (1) is made monolithic with its shaft and the bearing system, needed to support it during rotation, uses the surfaces ...  
WO/2004/010431A1
A servo track writer assembly (200) and method (800, 900) are provided for recording servo pattern information on a disc (108). The servo track writer assembly includes a spindle assembly (206), an actuator assembly (202) and a servo rec...  
WO/2004/007984A1
The present invention provides a device and a method to enhance thrust load capacity in a rotor-bearing system. The load-enhancing device comprises a stator and a rotor arranged in such as way as to achieve a magnetic thrust load capacit...  
WO2003050427A9
A swivel joint (20; 100; 110; 120; 130) according to the present invention includes first and second base members (30A; 32A; 104A; 114A; 129; 136). A spider (34; 60; 70) includes first and second arcuate surfaces (36, 38) which form join...  
WO/2004/001741A1
The present invention relates to the field of fluid dynamic bearings. Specifically, the present invention provides an apparatus and method useful for maintaining axial movement of a rotor in a high speed spindle motor assembly.  
WO/2003/103893A2
A solution is presented for high speed rotating devices, in particular cutting tools, whereby the said rotating device (1) is made monolithic with its shaft and the bearing system, needed to support it during rotation, uses the surfaces ...  
WO/2003/104660A1
A pneumatic cylinder, comprising a shaft member (14) having a piston (11) and a piston rod (3) axially connected to each other, a cylinder body (2) allowing the piston rod to be projected to the outside to linear-reciprocatingly support ...  
WO/2003/102375A1
A magnet ring assembly (138) for a piston/magnet assembly that can be used in a Stirling cycle cryocooler comprises a cylindrical magnet holder (188) and a plurality of magnet sectors (190) disposed on the inner surface of the magnet hol...  
WO/2003/101695A2
A machining spindle comprising an inner shaft (110a) arranged for carrying a first tool (5a) for machining a workpiece and an outer shaft (110b) arranged for carrying a second tool (5b) for machining the workpiece, wherein the shafts are...  
WO2003036071A9
A gas restrictor particularly useful for application in gas bearings as used, for example, in free-piston Stirling cycle machinery. Porous strip material (52) together with a backing plate (60) and orifice (32) is used to provide the res...  
WO2002063174A8
A hydrodynamic thrust bearing arrangement (10) (Fig 1) for supporting a rotating machine shaft (12) against axial thrust forces comprises a collar (22) carried by the shaft with axially spaced, axially facing faces (24, 26), one of which...  

Matches 501 - 550 out of 10,759