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JP2000085197A |
To maintain adequate positioning relationship of a print head with an image drum by using a magnet. A print head 500 moves along a line parallel to a vertical line of a vacuum image drum 300, receives an information signal, generates ray...
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JP2000066130A |
To reduce the noise generation by the high-speed rotation of laser printer and to miniaturize a product by using the scanning motor of a magnetic force bearing system. The magnetic bearing device constituted to include a stationary shaft...
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JP2000065060A |
To automatically adjust a drift and gain of a sensor by automatically initially adjusting a magnetic bearing device by vibrating the magnetic bearing device so as to bring it into contact with a rotary body protecting bearing by reducing...
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JP2000501817A |
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 wound. The wi...
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JP2000027037A |
To provide a supporting apparatus having a simple structure and almost free from friction by using a magnetic support acting in radial direction as well as axial direction. The support in radial direction is also performed magnetically i...
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JP3002915B2 |
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JP2999607B2 |
A superconducting bearing unit compring a permanent magnet mounted to a rotating shaft and a superconducting body mounted on the inner periphery of a housing surrounding the shaft, the superconducting member being adapted to be cooled wi...
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JP2998441B2 |
PURPOSE: To enable high speed rotation with a simple and economical constitution by supporting both end sides of an exhaust pump section and an integrated rotor of a motor for driving the exhaust pump section by bearing means while dispo...
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JPH11351257A |
To reduce manufacturing cost and to improve bearing characteristic by constituting an axial bearing as an axial magnetic bearing, and constituting a radial bearing as a dynamic pressure bearing. An air bearing 12 is constituted as a radi...
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JP2992578B2 |
A rotary member (2) is continually held suspended in the space by a strong pinning force (fishing effect) of high temperature oxide superconductors (1) under superconductive state. The magnetic field of the magnets (3) on thus suspended ...
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JPH11335932A |
To obtain the subject shock absorber capable of directly converting generated vibrations into friction loss to achieve quiet operations and improve work environments by disposing a support component surrounding the rotary shaft of a roto...
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JPH11335931A |
To provide an open end spinning device capable of surely discharging the generated static electric charge of a spinning rotor, even when a synthetic raw material is spun. This open end spinning device 1 has a bearing device for supportin...
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JPH11513557A |
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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JPH11513558A |
PCT No. PCT/CH96/00350 Sec. 371 Date Apr. 3, 1998 Sec. 102(e) Date Apr. 3, 1998 PCT Filed Oct. 4, 1996 PCT Pub. No. WO97/13986 PCT Pub. Date Apr. 17, 1997A rotordynamic machine for the forwarding of a fluid, such as a turbomachine (2) or...
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JP2976203B1 |
A magnetic bearing whose axial length is shortened and whose control property is enhanced is provided. A rotor 1 has a hollow structure. A sensor mounting shaft 27 is fixed to a side end face 23 of an outer sleeve 21 by bolts 25. A radia...
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JPH11313462A |
To provide a permanent magnet synchronous machine, which is capable of attaining a smaller space and more efficient use and a higher degree of integration of the quantity of magnetism than a motor or a generator involving a conventional ...
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JP2968999B2 |
A superconductor-magnet system having high thrust and stability, with a method for increasing the thrust and stability of such a system, comprises a first magnet, a second magnet and a superconductor. The magnets are in motion relative t...
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JPH11512032A |
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 magnet 10 ...
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JP2961117B2 |
The invention relates to am agnetic bearing device comprising a rotary main shaft (1), an armature disk (2) mounted on said rotary main shaft (1), and a pair of bearing elements (3) disposed on opposite sides in the axial direction of sa...
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JPH11275806A |
To remove the restriction of attitude during application and moreover improve start and stop durability by locating a permanent magnet to the internal side of the rotor and stator in the radius direction, between both ends in the axial d...
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JP2955221B2 |
To provide a small, inexpensive assembly easy to fabricate by fixing a stator driving winding, fixed to a coil on an axial abutment face and adapted to be received in an internal annular space in a movable portion of a magnetic circuit, ...
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JPH11266564A |
To drastically reduce an eddy currents that are generated at the rotor of a magnetic bearing and to suppress heat generation and temperature increase in a spindle, by constituting a fixed side stator part of a radial bearing with a plura...
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JPH11257352A |
To provide inexpensive and stable high-speed rotation by using a sensorless magnetic bearing, in a rotating machine using a sensorless and brushless direct current motor. Motor terminal voltages Va, Vb, Vc are corrected in a phase correc...
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JPH11509301A |
(57) [Summary] A pair of electromagnetic radial bearings (30) facing each other on the diameter (15'1,15’3And 15'2,15’4), Which are spaced apart by the circumference of the rotor (11) (19)1A,191B,191C,192AEtc.), and each protrusion h...
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JPH11223193A |
To provide an axial thrust balancing apparatus, by which stress applied to an axial body by thrust can be reduced without any replacement with a shaft body provided with a larger outside diameter. In an axial thrust balancing apparatus 2...
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JPH11210748A |
To provide a hydrostatic bearing device which can be miniaturized and made lightweight, restrain the generation of shearing stresses, and prevent the adhesion of particles of a magnetic substance, etc., and which is seldom affected by ex...
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JPH11193819A |
To improve the durability of a rotary body and to lengthen the life thereof even though the rotary body is repeatedly brought into contact with an auxiliary bearing at the time of emergency of a magnetic bearing, and also to reduce the d...
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JPH11193820A |
To reduce the damage to an auxiliary bearing when the function of a main magnetic bearing is stopped, and to reduce the cost and time required for maintenance of the auxiliary bearing by applying a magnetic field to the auxiliary bearing...
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JPH11190348A |
To suppress the thermal damage and improve the durability by specifying the inner and outer rings groove curvature radiuses in a protecting bearing in a magnetic bearing device. A full type bearing consisting of an outer ring 1, an inner...
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JPH11507710A |
A magnetic bearing apparatus and a method for providing at least one stabilizing force in a magnetic bearing structure with a superconducting magnetic assembly and a magnetic assembly, by providing a superconducting magnetic member in th...
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JPH11182547A |
To reduce a cost by obviating an emergency bearing by housing a sliding member having a low friction coefficient in respective grooves in the shaft direction of a relative rotation surface of at least one of a magnetic bearing, a stator ...
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JP2905508B2 |
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JP2899853B2 |
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JPH11117942A |
To provide long longevity by supporting a still rotating rotor to avoid breakage of a vacuum pump as a magnetic bearing loses its function at the time of power failure caused on an emergency bearing of a turbo-molecular pump by a simple ...
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JPH11504549A |
A rotary blood pump comprises a pump housing (12) having an inlet (13) and an outlet (16). A rotor (17) is mounted within the housing and has an impeller (19). A rotor motor (53, 54, 56) is provided which includes a plurality of permanen...
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JP2886891B2 |
Axial magnetic bearings (30) are described suitable for use where high loads and high rotational speeds are found together. The bearing comprises an assembly where, for thrusts along the shaft (11,31) in one direction, the shaft has, in ...
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JPH11504417A |
A damper film bearing assembly for supporting a rotatable shaft of a turbomachine includes a housing having a central bore sized to receive the bearing member, and an annular cavity formed within the housing around the central bore. The ...
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JPH11101235A |
To provide a magnetic bearing to improve a radial magnetic bearing by conventional arts and extremely reduce the incurring of a bearing loss. Three or more U-shaped electromagnetic steel sheet laminates 10 are arranged around the periphe...
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JPH11101236A |
To provide a long life touch down bearing to be arranged even at a position having a large inside diameter, suppress an applying load during abnormal rotation, and prevent the breakage of a magnetic bearing device. This bearing device co...
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JPH1181057A |
To refine on an apparatus as a rotor shaft of an open-end spinning apparatus which supports a spinning rotor in a wedge-type supporting space of a bearing mechanism for supporting disks and positions it with a magnetic thrust bearing. Th...
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JPH1182522A |
To prevent partial wear of the surface which generates sliding friction, by letting balls intervene rollably between inner rings and outer rings, and forming cages which retain the balls at regular intervals on the circumference from a m...
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JP2873372B2 |
Magnetic bearing for the active magnetic centring, in at least one axis, of a mobile body according to another body perpendicular to a reference axis (Z-Z) of a body (B,B',B'',BB) which can move with respect to another body (A, A',AA), c...
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JP2870604B2 |
A vacuum pump has a pump housing, magnetic bearings mounted in the housing, a rotary assembly including a pump rotor disposed in the housing and supported for rotation by the magnetic bearings and two spaced emergency bearings supporting...
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JP2872202B2 |
An electric motor having a rotor and stator includes a magnetic hollow rotating shaft to which the rotor is fixed. A magnetic cylindrical bearing is inserted into the magnetic hollow rotating shaft such that a radial repulsive force is g...
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JP2872203B2 |
To reduce the axial load acting on hemi-spherical bearings and a hemi-spherical bush by providing a separation device for maintaining permanents magnets in a non-contact state between the hemi-spherical bearings and hemi- spherical bush....
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JPH1169714A |
To prevent the occurrence of contacting and sliding on the surface of thrust dynamic pressure bearing during start. In a spindle motor which supports a rotor to the stator by air dynamic pressure bearing or in a rotating body equipment u...
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JP2866910B2 |
The invention relates to X-ray tubes of the type with rotary anode. …The invention resides in the fact that the rotor 3 is supported by passive magnetic bearings 5, 6, 9, 10 the respective positions of which are such that the rotor...
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JPH1162516A |
To prevent a high-pressure gas supplied to an expansion turbine from leaking to the outer circumference of the machine to eliminate generation of a fire, high-pressure, gas pollution and over-maintenance caused by foreign matter mixing, ...
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JP2863520B1 |
[wrap up] [Task] Provided is a thrust reduction device for a centrifugal pump that prevents contact between a balance disc and a balance seal and extends the life of a bearing without using a spring having a large reaction force. An annu...
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JPH1155919A |
To prevent abrasion between a shaft and a bearing and lighten the load torque by breaking the fast sticking of the dynamic pressure occurrence place of a gas thrust bearing at operation start and stop. A piezoelectric element 11 is fixed...
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