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Patent Searching and Data


Matches 701 - 750 out of 5,142

Document Document Title
WO/1986/001862
A controlled radial magnetic bearing device has control circuits (7X, 7Y) which control the magnetic force of electromagnets (2) that magnetically support a rotary shaft (1), responsive to outputs of position sensors (5X, 5Y) that detect...  
WO/1986/001434
Combined hydrostatic/hydrodynamic bearing system for a grinding apparatus in which the material is ground in a grinding space defined between a pair of relatively rotating grinding members and in which at least one of the grinding member...  
WO/1986/001268
Whirling and like vibrations of a high-speed flexible rotor (1) in a plane at right angles to its nominal axis of rotation are dampened by the reaction against the rotor surface of an array of fluid jets directed tangentially, and in a s...  
WO/1985/005417
A controlled radial magnetic bearing device, which consists of a revolution number detector (14) for detecting the rotational speed of a rotary shaft (1) with respect to X-axis and Y-axis control circuits 7X, 7Y, which are adapted to con...  
WO/1984/002755
This invention pertains to the technical field of vibratory pneumatodynamic bearings. The technical problem is to reduce bearing weight while not increasing pitch and yaw. This is accomplished by employing a transducer (41) including an ...  
WO/1984/001802
The magnetic bearing which is rapidly formed comprises a radially passive storage and an axially active regulation. By using only four sensor devices and three regulating amplifiers, a magnetic bearing is obtained which enables, in addit...  
WO/1984/000198
The magnetic bearing is comprised of two opposite parts arranged along the axis of the rotor. Those two parts allow to adjust the position of the rotor while taking into account the lateral deviations of the axis with respect to a refere...  
WO/1983/001482
Energy converter, comprising a boiler, a turbine (11), a condenser, a feed pump (16) and a generator (17) and, if required, a recuperator and a pre-feeding pump. The thermal energy to be supplied to the boiler has been arranged to mainta...  
WO/1982/003666
A method and a means for the sealing of a bearing space (29; 33) formed in hydrostatic or aerostatical bearings and adapted to receive a fluid. By means of the invention it is made possible to provide a resulting force operating in a det...  
WO/1982/002235
A graded planar seal is provided between opposing planar surfaces (62, 64) for isolating an air bearing in a vacuum environment (16). The air bearing (22, 24, 26, 62, 64) supports a structure (20) such as a semiconductor mask or wafer an...  
WO/1981/001449
Hydrostatic bearing of which the journal of the shaft (1) affects the shape of a sleeve (2). The bearing comprises a first and a second sets of chambers (5 and 6) provided in the concentric bearings (3 and 4) respectively facing the inne...  
JP2013249930
To provide a static pressure stage device that can suppress variation of a bearing gap associated with variation of the supply pressure of a pressurizing fluid.A static pressure stage device 100 has: fluid supply pipes 31a, 31b connected...  
JP2013249915
To provide a fluid bearing device capable of suppressing vibrations even during the high-speed rotation.A biasing part 3 that biases a movable surface part 22A in such a direction as to approach a bearing surface 121a faced by the movabl...  
JP2013248676
To provide a throttle for an oil passage preventing turbulence of oil as far as possible, an oil passage throttling device using the throttle for the oil passage, and a movement guide device using the oil passage throttling device.A movi...  
JP2013249852
To enable elimination of an initial position variation of a levitating body caused by friction or the like, and to suppress position variations of the levitating body caused by a steady external force, by using not only substantial zero ...  
JP2013245607
To provide a spindle device and an electrostatic coating device that convert the motion energy of gas into a rotational drive force with high efficiency, and are not easily deformed or damaged even if rotated at a high speed.A spindle de...  
JP2013245731
To provide a workpiece lifting device which controls the amount of a workpiece to be lifted with high accuracy, while reducing mutual influences of an atmospheric pressure near above an air supply port and an atmospheric pressure near ab...  
JP2013245048
To provide an aeration unit for workpiece flotation device reducing a load in maintenance and coping with both cases of air supply and air exhaust by switching air supply/air exhaust of one gas throttle mechanism.In an aeration unit 120 ...  
JP2013245732
To provide a workpiece levitation device, in which a shape of a porous film is stabilized during air supply and stop, and which responds to both air supply and discharge by switching between the air supply and discharge in one gas thrott...  
JP2013236472
To provide a rotary electric machine which is easily manufactured and inhibits vibrations and noise.A stator 51 is housed in a case 40. A rotation shaft 52 is formed by a magnetic material and is rotatably supported by the case 40. A rot...  
JP2013231449
To provide a fluid bearing device capable of instantly reducing power consumption when an acting external force decreases.In an axial direction of a rotation shaft 6, at least two regular fluid bearings 3, 5 and at least one auxiliary fl...  
JP2013231471
To provide a fluid transfer device capable of further increasing a thrust shaft support force.A centrifugal pump 10 is provided with a housing 12, a rotation unit 14 rotated with a rotary shaft L as its center, an impeller 16, a motor un...  
JP2013224848
To provide an alignment mechanism capable of reducing frictional resistance by alignment, a highly accurate thrust rotary test machine using the same, and a torque measuring device using the thrust rotary test machine.A base 23 is suppor...  
JP2013221529
To provide an aerostatic gas bearing which is capable of curbing the generation of a self-exited vibration and stably supporting an object to be supported and is low in cost, and to provide a linear motion guiding device using the aerost...  
JP2013221572
To provide a hydrostatic bearing which maintains desired stiffness regardless of a variation of a gap by detecting a size of the gap of bearings by a simple configuration and controlling a flow rate of a throttle according to the detecte...  
JP2013213544
To provide an inexpensive hydrostatic gas bearing capable of stably supporting an object to be supported without inducing self-excited vibration, and to provide a linear guide device using the hydrostatic gas bearing.A hydrostatic gas be...  
JP2013213545
To provide an inexpensive hydrostatic gas bearing capable of stably supporting an object to be supported without inducing self-excited vibration, and to provide a linear guide device using the hydrostatic gas bearing.A hydrostatic gas be...  
JP2013213583
To provide a flywheel assembly having an open-core architecture.Apparatuses, systems and methods are described for a flywheel system incorporating a rotor 32 made from a high-strength material in an open-core flywheel architecture 30 wit...  
JP2013213413
To provide a centrifugal blood pump capable of performing the stable non-contact drive by using the repulsive force of a permanent magnet for a thrust bearing of an impeller.A centrifugal blood pump includes a casing having an inlet and ...  
JP2013213584
To provide a hub-less or open-core flywheel storage device having improved stability and performance.Methods and apparatuses are disclosed for incorporating a plurality of independently rotating rotors 32 made from high-strength material...  
JP2013213558
To solve the following problems: when pressure of a working fluid is large, it is difficult to apply a gas bearing with a small load capacity to a rotary machine because a large differential pressure occurs in a turbine moving blade or a...  
JP2013202727
To provide a magnetic bearing spindle device capable of shortening both of a radial support interval and axial support interval of a tool, thereby improving machining accuracy in a radial direction and positioning accuracy in an axial di...  
JP2013204653
To provide a hydraulic continuously variable transmission in which problems such as metal contact between a plunger and a cylinder block, wear, seizure, friction loss can be suppressed by smoothly operating the hydraulic continuously var...  
JP2013194816
To provide an inexpensive air guide device causing less damage of a member.A cross-sectional shape orthogonal to an axial direction of an X guide member 11 is non-circular, an angle made by neighboring faces of an outer peripheral face o...  
JP2013188806
To provide a cutting device capable of suppressing the entry of moisture into a spindle assembly by immediately detecting the entry of the moisture into the spindle assembly and notifying the fact.A cutting device includes a spindle asse...  
JP2013185623
To provide a direct levitation device capable of achieving more highly accurate linear guidance.An air slider device 1 has: a slide shaft 2 of a rectangular column shape; and a slider 3 of a frame shape having planar aerostatic bearing s...  
JP2013185578
To provide a vacuum pump capable of easily detecting a rotation direction of a rotor.In a vacuum pump, a whirling calculation part 425A calculates a whirling amount G in a forward rotation direction on the basis of respective detection v...  
JP2013185691
To prevent or reduce a change in a relative position of a floating body and a magnetic unit even if a constant external force is generated in a magnetic floating device.A magnetic floating device 1 includes: a floating body 3, at least p...  
JP2013186081
To provide a movement tabl device that hardly causes deformation of a movement table, and can move the movement table in a stable posture even when accuracy of a bearing guide surface of a static pressure gas bearing is insufficient.A ro...  
JP2013167325
To provide a hydrostatic liquid bearing device improved in rigidity.A hydrostatic liquid bearing 15 including pressure reception surfaces 6 and 7 is arranged on a guide surface 5 of a guide 4 formed of a magnetic body by interposing bear...  
JP2013167265
To provide a static pressure journal bearing easily obtaining characteristics in which the rigidity of a rotation shaft is nearly infinite when a force acting on the rotation shaft is small even if a dimensional error between the rotatio...  
JP2013151338
To provide a film guide roll capable of facilitating maintenance by enabling stable rotation over a long period of time, and to provide an apparatus for manufacturing an optical film using the film guide roll.A film guide roll 6 includes...  
JP2013148149
To provide a hydrostatic bearing operable when starting a guide object member by relatively low oil feeding pressure.A hydrostatic bearing is provided for guiding a guide object member 16 by supplying lubricating oil to a load area 17 of...  
JP2013147213
To provide a vehicle drive apparatus which can reduce resistance of a bearing part where a wheel is supported by an axle, and allow the wheel to rotate readily at a high speed.A vehicle drive apparatus includes: a wheel 11 inside which a...  
JP2013148140
To provide a magnetic bearing control device capable of further improving S/N ratio of a sensing signal.The magnetic bearing control device includes control circuits 61a and 61b which supply an electromagnet current Im based on a current...  
JP2013145054
To provide a bearing device for a rotating part performing bearing in a thrust direction while applying force balancing with a thrust load of a rotation driven part without the need for current control, and to provide a pump using the sa...  
JP2013145009
To provide a structure of an air slide device, the structure that is strong against a load change of a slide plate and reducible in the size and weight of the device.An air slide device 1 comprises a rail 2 of a magnetic material, and a ...  
JP2013145010
To provide a bearing structure capable of generating a larger dynamic pressure by combining a novel principle using a magnetic fluid and a conventional principle of a slip flow.A bearing structure has a first slide surface 1 at a fixed s...  
JP2013142433
To provide a slide guide device of an air static pressure type, the device capable of suppressing sliding resistance due to lubricating oil on a sliding surface.A slide guide device includes: a guide 20 having a guide surface 21; a slide...  
JP2013142469
To provide a bearing mechanism usable in a higher speed region.A truck for a railroad vehicle includes mechanical bearings 16 at both ends of a wheel set, and a magnetic bearing 50 in the middle of a wheel. In low speed travel, the mecha...  

Matches 701 - 750 out of 5,142