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Class Information
Number: 384/113
Name: Bearings > Rotary bearing > Fluid bearing > Radial and thrust > Central member recess
Description: Subject matter wherein an inner relatively rotating element has a groove, or passage for receiving the fluid.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8641283 Hydrodynamic bearing apparatus and spindle motor having the same Feb. 4, 2014
8628246 Groove configuration for a fluid dynamic bearing Jan. 14, 2014
8568111 Fluid flow machine Oct. 29, 2013
8454237 Spindle motor Jun. 4, 2013
8366321 Bearing unit, and motor and electronic apparatus having bearing unit Feb. 5, 2013
8292506 Fluid dynamic bearing, motor, and recording-medium driving apparatus Oct. 23, 2012
8231277 Sliding bearing with different sets of cavities Jul. 31, 2012
8182154 Fluid dynamic bearing system May. 22, 2012
8157447 Groove configuration for a fluid dynamic bearing Apr. 17, 2012
7854552 Hydrodynamic bearing device, spindle motor equipped with same, and recording and reproducing apparatus Dec. 21, 2010
7794152 Bearing for motor Sep. 14, 2010
7736061 Fluid dynamic bearing motor, and recording-medium driving apparatus Jun. 15, 2010
7210850 Hydrodynamic bearing device, spindle motor and hard disk driving apparatus having the hydrodynamic bearing device May. 1, 2007
7011450 Fluid dynamic bearing device and motor including the device Mar. 14, 2006
6955472 Lubricant reservoir for gas bearing Oct. 18, 2005
6869212 Rotor/stator type homogenizer Mar. 22, 2005
6834997 Spindle device using dynamic pressure bearing Dec. 28, 2004
6761483 Combined radial-axial slide bearing Jul. 13, 2004
6604858 Hydro dynamic gas bearing and disk drive using the same Aug. 12, 2003
6457867 Method and apparatus for replenishing oil in a fluid dynamic bearing using a sleeve groove Oct. 1, 2002
6402384 Hydrostatic axle bearing Jun. 11, 2002
6371650 Hydraulic dynamic bearing and spindle motor and rotary assembly provided Apr. 16, 2002
6271612 Spindle motor Aug. 7, 2001
6267035 Fiber chopper apparatus and method Jul. 31, 2001
6215217 Dynamic pressure bearing motor Apr. 10, 2001
6211592 Motor for driving storage disks Apr. 3, 2001
6183135 Single plate hydrodynamic bearing with self-balancing fluid level and fluid circulation Feb. 6, 2001
6147424 Gas dynamic pressure bearing apparatus Nov. 14, 2000
6072660 Disk driving apparatus using dynamic pressure-type bearing device Jun. 6, 2000
6059459 Hydrodynamic pressure bearing May. 9, 2000
6020664 Electric spindle motor Feb. 1, 2000
6019515 Externally pressurized gas bearing assembly Feb. 1, 2000
5993066 Fluid retention principle for hydrodynamic bearings Nov. 30, 1999
5969903 Magnetic particle trap for hydrodynamic bearing Oct. 19, 1999
5956204 Magnetic disc drive having magnetic particle trap for hydrodynamic bearing Sep. 21, 1999
5941644 Hydrodynamic bearing Aug. 24, 1999
5926342 Air dynamic pressure bearing apparatus and data drive apparatus using the same Jul. 20, 1999
5885005 Bearing device and spindle motor provided with the bearing device Mar. 23, 1999
5879084 Hydrodynamic bearing Mar. 9, 1999
5872409 Bearing system and brushless DC motor using such system Feb. 16, 1999
5855438 Journal bearing apparatus Jan. 5, 1999
5736799 Miniature electric motor having bearing unit Apr. 7, 1998
5707154 Hydrodynamic fluid pressure bearings Jan. 13, 1998
5685647 Single plate hydrodynamic bearing with self-balancing fluid level and fluid circulation Nov. 11, 1997
5580175 Bearing with particle trap Dec. 3, 1996
5524502 Positioning apparatus including a hydrostatic bearing for spacing apart a supporting surface and a guide surface Jun. 11, 1996
5487608 Single plate hydrodynamic bearing with self-balancing fluid level and fluid circulation Jan. 30, 1996
5433529 Fluid bearing construction employing thrust plate with pressure compensation ports Jul. 18, 1995
5427456 Fluid bearing with asymmetrical groove pattern Jun. 27, 1995
5370463 Hydrodynamic gas bearing Dec. 6, 1994

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