Resources Contact Us Home
Dynamic pressure gas bearing structure and method of manufacturing the same as well as method of using the same

Image Number 5 for United States Patent #5944427.

A cross-sectional shape of a shaft body 1 perpendicular to its axis O has a shape defined by a closed curve having a plurality of maximal points M.sub.1, M.sub.2 and M.sub.3 whose distances from the axis are maximized about the axis O and a plurality of minimal points N.sub.1, N.sub.2 and N.sub.3 whose distances from the axis are minimized. This cross-sectional shape has a groove forming region provided with one groove 1b.sub.1 at least between the maximal points M.sub.1 and M.sub.2. When a bearing body 2 rotates on a CCW side with respect to the shaft body 1, the groove 1b.sub.1 is so arranged that an outer peripheral length a.sub.1 in the forward rotational direction exceeds an outer peripheral length b.sub.1 in the reverse rotational direction. Thus, a dynamic pressure gas bearing structure which can prevent galling of the shaft body and the bearing body by shifting the shaft body and the bearing body to a noncontact state at a low rotational frequency is obtained

  Recently Added Patents
Compounds with (1 E, 6E)-1,7-bis-(3,4-dimethoxyphenyl)-4,4-disubstituted-hepta-1,6-diene-3,5-d- ione structural scaffold, their biological activity, and uses thereof
Endotracheal tube
Light-reflective anisotropic conductive paste and light-emitting device
Kit and method for the capture of tumor cells
Summarization of short comments
Multi-port, gigabit SERDES transceiver capable of automatic fail switchover
Spectral sensor for checking documents of value
  Randomly Featured Patents
System and method for card shoe security at a table game
Thermal overload protection apparatus for a commutator or slipring motor
Serial bus data control device
Electronically monitored mechanical pipette
Measuring range adapter
Card light having a cover being an adhesively attached label
Eddy current sensing arrays and system
Apparatus and method for producing logs of sheet material
Target flowmeter
Fastening device