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
Methods and systems for dynamic spectrum arbitrage
Biometric data display system and method
Method for producing vinyl acetate monomer
Method for preparing an organic film at the surface of solid support under non-electrochemical conditions, solid support thus obtained and preparation kit
Method of controlling semiconductor device, signal processing method, semiconductor device, and electronic apparatus
Display device and method of repairing display device
Phone messaging using audio streams
  Randomly Featured Patents
Semiconductor interconnect interface processing by high temperature deposition
Pulse generator circuit for producing simultaneous complementary output pulses
Fuzzy search using progressive relaxation of search terms
Method for forming metal compression-spring gemstone mounting
Torque converter hub sleeve convertible to various drive connections
Formable hose
Semiconductor apparatus having field limiting rings
System for training optimisation
Charging and capture of particles in coronas irradiated by in-situ X-rays
Golf club head