Class 384/101 - With antifriction bearing

Subclass of Class 384 - Bearings
Definition: Subject matter including an antifriction bearing.
No. of patents: 38
Last issue date: 06/05/2007

Number	Title	Issue Date
7226004	Solvent resistant bearings for self-generating electrostatic spray gun An electrostatic spray gun (10) having an air powered alternator-turbine (14) with a rotating impeller (24) therein mounted in bearings (18) is provided with bearings (18) which are coated with a solvent resistant material. This co...	06/05/2007
7176594	Motor A motor that can prevent damages on the fluid dynamic bearing. A ball is press-fitted into the end surface of the shaft body, and the ball is disposed in such a manner that the tip portion of the ball comes to the higher position with respect to the end surface of t...	02/13/2007
7155826	Motor spindle with improved machining precision and method for operating one such motor spindle A motor spindle includes a spindle shaft for receiving a tool. The spindle shaft is accommodated in the housing of the motor spindle in a fixed bearing and a loose bearing. The received tool enters into contact with the machined workpiece in a tool interface when th...	01/02/2007
7004634	Fluid dynamic bearing asymmetry pressure feedback 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. ...	02/28/2006
6793395	Bearing arrangement for machine tool spindles The invention relates to a bearing arrangement for machine-tool spindles, consisting of a hydrostatic radial bearing and at least one radial/axial roller bearing. ...	09/21/2004
6758598	Integrated oil transfer sleeve and bearing An integrated roller bearing and fluid transfer sleeve adapted for supporting and transferring fluid to a rotating shaft in a gas turbine engine reduction gearbox. The integrated roller bearing and fluid transfer sleeve comprises a fluid transfer sleeve having a sle...	07/06/2004
6367977	Hybrid hydrostatic spindle The present invention relates to a spindle unit which is able two work both in a low speed powerful roughing regime and medium and high speed precision semi-finishing and finishing. The spindle unit includes a body, a shaft placed into the body, journal b...	04/09/2002
6345913	Kinetic pressure fluid bearing apparatus A kinetic pressure fluid bearing apparatus is disclosed, which includes a clearance supporting portion formed between a lower end portion of a rotary shaft and a first kinetic pressure generating groove on a surface of a thrust bearing. The clearance supp...	02/12/2002
6334712	Deflection compensation roll and process for supporting a roll jacket on a crosspiece of the deflection compensation roll Deflection adjustment roll and process for supporting a roll jacket on a crosspiece of the deflection compensation roll. The deflection compensation roll includes a crosspiece, roller bearings composed of radial bearings and at least one hydrostatic beari...	01/01/2002
6074165	Vacuum pump with magnetic bearing system and back-up bearings A vacuum pump is provided with back-up bearings in addition to magnetic bearings for supporting its rotor with respect to the pump housing. The rotor has a hollow rotary shaft extending backwards enclosing in its inner space a forwardly protruding tubular...	06/13/2000
5848843	Dual supporting pivot thrust bearing apparatus A supporting pivot thrust bearing apparatus is provided in which a steel ball groove is formed at both ends of a rotary shaft inserted into a through hole of a sleeve, and a steel ball is fixably inserted between the steel ball groove and a thrust support...	12/15/1998
5789839	Aerostatic and aerodynamic bearing for a motor The invention relates to a high precision axial and radial aerostatic and aerodynamic bearing for a motor. The bearing surfaces of the stator and the rotor are of a toroidal shape....	08/04/1998
5779005	Constant flow cascade lubrication system A system for lubricating bearings on a vertical rotatable shaft within a bearing housing, is comprised of an annular lower lubricant sump at a lower portion of the bearing housing; an annular upper lubricant reservoir at an upper portion of the bearing ho...	07/14/1998
5683183	Spindle device and bearing device therefor A bearing device includes a housing, a shaft arranged in an inner circumference of the housing, and a pair of bearings arranged between the shaft and the housing, and spaced from each other in an axial direction of the shaft, at least one of the bearings ...	11/04/1997
5348401	Hybrid bearings for turbopumps In rocket engines power is usually obtained by burning fuel and oxidizer. The two are mixed, pressurized, and directed to a combustion chamber by means of turbopumps. Hydrostatic bearings have been proposed for use in these turbopumps because during fligh...	09/20/1994
5202937	Arrangement for an axial and radial bearing unit The present invention relates to an axial hydrostatic thrust-bearing for an axial and radial bearing unit. This consists of two hydrostatic axial bearings (12, 13) acting on either side of a pressure plate or flange (14) which is connected to the shaft (6...	04/13/1993
5145262	Compact ball spline bearing assembly A ball spline bearing assembly includes a spline shaft having a peripheral surface formed with a spline groove, an outer sleeve fitted onto the spline shaft with a predetermined gap therebetween and a plurality of balls interposed between the spline shaft...	09/08/1992
5125719	Tunnel boring machine and method A tunnel boring machine having increased thrust capability is disclosed. The machine includes a rotatable cutter head for cutting material away from the face of the tunnel and a drive shaft and motor for rotating the cutter head in a cutting state of oper...	06/30/1992
5046863	Dynamic pressure bearing device A dynamic pressure bearing device induced a housing having a sleeve and a thrust receiver and a shaft fit into the sleeve. Herringbone-shaped grooves for generating dynamic pressure comprising outer groove segments and inner group segments are disposed to...	09/10/1991
4989997	Radial load reducing device, and sliding bearing and screw compressor using the device A radial load reducing device includes a high-pressure fluid chamber defined to face an outer circumferential portion of a rotating shaft or an outer circumferential portion of a rotating body integrally rotating with the rotating shaft at a first positio...	02/05/1991
4955730	Oil-pressure bearing apparatus An oil-pressure-supplied bearing apparatus which is ideally suited for the support of rotating shafts receiving significantly heavy thrust loads such as the propulsion shaft of a vessel. A plurality of pressurized chambers receiving oil pressure and a plu...	09/11/1990
4927274	Slip ring air bearing A compound journal airbearing having a sleeve concentric with a rotor and having an inner surface forming an airbearing space with the surface of the rotor so as to maintain the rotor surface and inner sleeve surface out of contact. The sleeve is supporte...	05/22/1990
4641977	Bearing system A bearing system for a high-speed, rotating shaft (20) includes an outer race (12) adapted to be rotatable in its machine support and ( 32) to carry a rolling bearing (16), such as a ball bearing, at one end and further includes a floating sleeve bearing ...	02/10/1987
4616388	Process for producing a hydrodynamic bearing having internal foil cartridge The invention provides a process for producing hydrodynamic bearings for supporting and guiding rotary machine shafts. The process consists of pre-manufacturing a self-contained cartridge formed of thin foils, each fixed to its two next adjacent foils at ...	10/14/1986
4605317	Hydrostatic roller bearing A bearing for supporting a load by the reaction force of a pressurized fluid, by the reaction force of a plurality of solid or hollow bearing rollers in the absence of the pressurized fluid or by a combined reaction force of the pressurized fluid and the ...	08/12/1986
4603458	Roller supported by a pneumatic bearing A roller used for a roller conveyor which includes an outer cylinder of the roller supported by a pneumatic bearing. The roller also includes a fixed shaft having a path for letting air pass through in the center thereof, and annular members fitted on the...	08/05/1986
4545741	Vertical motor pump A vertical motor pump including an upper bearing and a lower bearing located on the motor side for journaling a rotary shaft for rotation at an upper portion and a lower portion respectively of a rotor, at least one of the upper and lower bearings being c...	10/08/1985
4542994	Fluid bearings A fluid bearing in which parts of the bearing land are free to move relative to the bearing member on which they are mounted, so that in use the speed of the relative movement of the two confronting surfaces that define the bearing clearance is less than ...	09/24/1985
4527910	Dual clearance squeeze film damper This invention relates to a dual clearance hydrodynamic liquid squeeze film damper for a gas turbine engine. Under normal operating conditions the device functions as a conventional squeeze film damper, using only one of its oil films. When an unbalance r...	07/09/1985
4394091	Air bearing and antifriction bearing assembly A hybrid bearing assembly includes a shaft rotatably supportable within a shaft housing by a hydrodynamic foil bearing acting in parallel with an antifriction bearing. The shaft is supported solely by the antifriction bearing at zero and low shaft speeds,...	07/19/1983
4365759	Rotary type electrostatic spray painting device A rotary type electrostatic spray painting device comprising a rotary shaft and a spray head fixed onto the front end of the rotary shaft. Paint is fed onto the cup shaped inner wall of the spray head. The rotary shaft is supported by a single thrust air ...	12/28/1982
4360165	Rotary type electrostatic spray painting device A rotary type electrostatic spray painting device comprising a rotary shaft and a spray head fixed onto the front end of the rotary shaft. Paint is fed onto the cup shaped inner wall of the spray head. The rotary shaft is supported by a single thrust air ...	11/23/1982
4325591	Sealed and unitized bearing A two row tapered roller bearing having a one-piece double cup and separate cone assemblies fitted into the ends of the cup is unitized by seals which close the ends of the bearing. Each seal includes a metal seal case pressed into a bore that opens out o...	04/20/1982
4323197	Rotary type electrostatic spray painting device A rotary type electrostatic spray painting device comprising a rotary shaft and a spray head fixed onto the front end of the rotary shaft. Paint is fed onto the cup shaped inner wall of the spray head. The rotary shaft is supported by a single thrust air ...	04/06/1982
4260204	Damping restraining bearing for supercritically operation rotors Damping restraining bearing for supercritically operating rotors encompassing the rotor with a predetermined gap. The restraining bearing is actuated or deactivated responsive to radial rotor movements. The restraining bearing includes a damping member wh...	04/07/1981
4227755	Bearing arrangement for shaft of rotary compressor A slide bearing journals the rotor shaft in the compressor housing with a clearance radially of the shaft; and an anti-friction bearing mounted on the shaft journals it axially thereof, the housing having a fixed support surface against which the anti-fri...	10/14/1980
4019392	Torquing system for stabilizing inertial platforms A spherical inertial platform has a plurality of rotary torquer units spaced around the periphery thereof for torquing the platform relative to its housing in response to stabilization signals thereby to stabilize the platform. The torquer units, which ma...	04/26/1977
4000559	Combined bearing The combination of an axially loaded rolling bearing with an hydrostatic thrust bearing in a tandem arrangement. The hydrostatic thrust bearing bears against a housing by means of a piston action, and externally produced hydrostatic fluid is conducted fro...	01/04/1977

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Class 384/101 - With antifriction bearing