Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Cache memory control device, semiconductor integrated circuit, and cache memory control method
Methods for fabricating semiconductor devices
Horizontal cable manager
Transactional consistency scheme
Automatic setup of reflector instances
Method and system for automatic 3-D image creation
Sulfonated amorphous carbon, process for producing the same and use thereof
  Randomly Featured Patents
Multiple redundant through hole electrical interconnects and method for forming the same
Complex filter with higher order pole
Protective circuit for a secondary battery pack and method of operating the same
Variable capacitance circuit
Crystal quartz scepter
Fluoride dentifrices of enhanced efficacy
High gain, high bandwidth, fully differential amplifier
Device for plasma-activated vapor coating of large surfaces
Scanning method and apparatus
Fluidized bed apparatus