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Patent Searching and Data


Matches 501 - 550 out of 10,725

Document Document Title
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...  
WO2002079854A3
The invention provides a method and apparatus for positioning a surface (30) in a desired orientation. There is provided a movable member (10) supported for movement by a fixed member (40) and the movable member has an optical element, e...  
WO/2003/087636A1
The present invention relates to a magnetic seal and bearing arrangement which comprises a shaft (2) rotatable within a housing (12), a magnetic fluid-based seal assembly (10) arranged to form at least one seal of magnetic fluid between ...  
WO/2003/087581A1
The invention relates to an exhaust gas turbocharger (1) with a shaft (2) on which a turbo turbine (4) and a compressor turbine (3) are mounted and which is guided in radial bearings (5, 6) and at least one axial bearing (9). The inventi...  
WO/2003/087602A1
The invention relates to a magnetic guiding device (1) comprising at least one element (2) which is to be magnetically guided in the axial direction, e.g. a shaft or an actuating element which can be displaced in the axial direction. Sai...  
WO/2003/084750A1
A method and apparatus are provided for peeling a thin film (90), typically 100 microns or less in thickness, from a liner (80) by use of a rotatable peel rod (50) supported in an air bearing. The air bearing comprises a support plate (4...  
WO2003036071A3
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...  
WO2003003385A3
A magnetic device (23) is made by joining magnetic sheet layers (20) that will react to join the layers into a unitary body. The joining materials are reacted, and the device is formed. In a preferred embodiment, the magnetic material is...  
WO/2003/076127A1
The fast frequency spindle comprises a bearing device with an air bearing (5, 6) acting in a radial and/or axial manner, comprising a plurality of recesses (10, 20) arranged on the side opposite the bearing side. The recesses extend as f...  
WO/2003/071144A1
A description is given of a spindle (1) in which the moving part (2) fixed to the tool-holding collet (3) is supported by one or more aerostatic bushes (4) on cushions of air generated by a jet of compressed air that circulates continuou...  
WO2003012304A3
A multi-pad (24), fluid film thrust bearing (8) has the pads suspended from the carrier ring on hydrostatic oil pressure regions. The oil is pressurized hydrodynamically by relative rotation between a load surface and the bearing surface...  
WO/2003/056196A1
A roulette wheel hub assembly has axle (17) supported by bearings (18, 20) seated in respective open ends of hollow housing (11). Between bearings (18, 20) is a stack of: magnetic pairs (25) (comprising inner magnets (27), attached to th...  
WO/2003/054909A1
An assembly of a scanning electron microscope and an air bearing (8), comprising a compact scanning electron microscope provided with a manipulation arm (9) having a flexible connection (10) the said air bearing. The air bearing is provi...  
WO/2003/050427A1
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/2003/036071A2
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...  
WO2003019785A3
A turbo-generator machine 10 for producing a supply of cooled air and a supply of electric power has a permanent magnet generator rotor 52 fixed to a shaft 50 which is driven by a turbine rotor 62, the turbine serving to expand air which...  
WO/2003/027520A1
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 ...  
WO/2003/027521A1
A bearing unit rotatably supporting a shaft (51), comprising a radial bearing (55) for supporting the shaft in radial direction, a thrust bearing (66) for supporting one end of the shaft (51) in thrust direction, and a housing (56) allow...  
WO2002089671A3
A CT scanner (10) for obtaining an image of a subject includes a stationary gantry (12), and a rotating gantry (14) rotatably supported on the stationary gantry (12) for rotation about the subject. A fluid bearing is interposed between t...  
WO/2003/021123A1
The invention relates to a device that compensates for disturbances in a rotating machine in order to eliminate unwanted vibrations caused by synchronous disturbances, such as those caused by unbalance for example. Said machine comprises...  
WO/2003/019785A2
A turbo−generator machine (10) for producing a supply of cooled air and a supply of electric power has a permanent magnet generator rotor (52) fixed to a shaft (50) which is driven by a turbine rotor (62), the turbine serving to expand...  
WO/2003/017458A1
The invention relates to fine mechanics and mechanotronics, in particular to a method for non-contact displacement of elements, more specifically to the method for displacing a movable element in a non-contact transfer. Said method can b...  
WO2002101807A9
An electrostatic interaction system (10(1)) includes a first structure (12) having a first fixed electrostatic charge (14) and a second structure (16(1)) having a second fixed electrostatic charge (18). The polarity of the first and seco...  
WO/2003/012304A2
A multi-pad (24), fluid film thrust bearing (8) has the pads suspended from the carrier ring on hydrostatic oil pressure regions. The oil is pressurized hydrodynamically by relative rotation between a load surface and the bearing surface...  
WO2002054013A3
A monitoring and controlling system (A) for monitoring and controlling various operating characteristics of machine components. The monitoring and controlling system includes a primary transceiver (15), with sensors (10) and control devi...  
WO/2003/004890A1
The magnetic flux density by magnetic poles of electromagnets (M1 to M12) arranged at the same place in the axial direction of a rotor (1) at predetermined intervals in the circumferential direction of the rotor (1) varies gradually in t...  
WO/2003/003385A2
A magnetic device (23) is made by joining magnetic sheet layers (20) that will react to join the layers into a unitary body. The joining materials are reacted, and the device is formed. In a preferred embodiment, the magnetic material is...  
WO2002052165A3
A rotor shaft support and drive arrangement (10) comprises a bearing damper (34) including a number of interconnected oil cylinders (42) circumferentially distributed about a rotor to dampen the vibration thereof. A flexible diaphragm co...  
WO/2002/103215A1
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...  
WO/2002/103216A1
The invention relates to an active magnetic bearing (1) comprising: a stator (2) which is equipped with magnet coils (21) and a first stack of ferromagnetic plates (22); a rotor (3) which is equipped with a second stack of ferromagnetic ...  
WO/2002/101807A1
An electrostatic interaction system (10(1)) includes a first structure (12) having a first fixed electrostatic charge (14) and a second structure (16(1)) having a second fixed electrostatic charge (18). The polarity of the first and seco...  
WO/2002/095904A1
A magnetic levitation motor for rotating a rotor as levitated above a stator by a DC magnetic field and a stator winding. This motor comprises a DC magnetic field generating means (4) for generating a radial flux around the axis inside a...  
WO/2002/089671A2
A CT scanner (10) for obtaining an image of a subject includes a stationary gantry (12), and a rotating gantry (14) rotatably supported on the stationary gantry (12) for rotation about the subject. A fluid bearing is interposed between t...  
WO/2002/088548A1
Since disruptive forces can be continuously exerted upon a rotor during a pulsatile flow through a pump with a magnetically mounted rotor (permanent magnets and addition control current coils), it is necessary to adjust position i.e modi...  
WO/2002/086325A1
The invention relates to a vacuum conduit (10) which interlinks two vacuum devices (12, 14) and which comprises a vacuum-tight flexible tubular section (22) and a vibration damper (16) axially in parallel to said flexible tubular section...  
WO/2002/079854A2
The invention provides a method and apparatus for positioning a surface (30) in a desired orientation. There is provided a movable member (10) supported for movement by a fixed member (40) and the movable member has an optical element, e...  
WO/2002/068834A1
The invention relates to a roller for guiding at least one thread and comprising a hollow cylindrical roller sleeve. Several bearings are used for mounting the hollow cylindrical roller sleeve on a support whereby permitting the sleeve t...  
WO/2002/064987A1
A gas lubricated axial thrust bearing for resisting axial forces acting on a machine rotor, comprises at least one pad 7 mounted on a stationary machine surface and axially spaced from a surface of the rotor 1 by a lubricating gas film. ...  
WO2002049192B1
A type of passive magnetic bearing that provides for both positive radial stiffness and significant levels of passive radial damping. Axial damping and axial forces can also be generated with minor modifications to the basic configuratio...  
WO/2002/063174A1
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...  
WO2002044574A3
A reduced thrust compensation mechanism is provided with a pressurized fluid source and one conventional seal, a fluid film or foil bearing is used as another seal. A bearing system as described may be used in high speed rotating machine...  

Matches 501 - 550 out of 10,725