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
DDR PSRAM and data writing and reading methods thereof
Systems and methods for controlling neurostimulation based on regional cardiac performance for use by implantable medical devices
Location analysis using fire retardant-protected nucleic acid-labeled tags
High bandwidth compression to encoded data streams
Process for the dehydration of substituted 4-dimethylamino-2-aryl-butan-2-ol compounds and process for the preparation of substituted dimethyl-(3-aryl-butyl)-amine compounds by heterogeneo
Methods of manufacturing large-area sputtering targets by cold spray
Trench isolation structure
  Randomly Featured Patents
Information processing device with display having attachable/detachable data storage device having a plurality of recording media
Flame-proof moulding compounds
System and method for providing a graft in a vascular environment
Surveying instrument
Power steering valves
DC offset calibration in a direct conversion receiver
Adhesive blends
Optical disc, tracking controlling apparatus and method, and focus controlling apparatus and method
Handle for lifting, moving and securing the lid of a cooking utensil
Apparatus and process for fiberizing fluoride glasses using a double crucible and the compositions produced thereby