Resources Contact Us Home
Method and system for withstanding shock in a spindle motor bearing

Image Number 8 for United States Patent #7407327.

A system, method and means is provided for withstanding mechanical shock for use with fluid dynamic bearings. A sealing system is provided that withstands 1000 G shock events. In an aspect, a grooved pumping seal employed between a thrust plate and a shield, a thrust plate having spiral grooves, a fluid recirculation passageway, and a reservoir creates an asymmetric pressure gradient. In an aspect, fluid is retained and air is purged utilizing an enlarged fluid reservoir, axial channels and an angled fill hole. In an aspect, a shaft is attached to a top cover supplying radial stiffness, and an enlarged single-sided thrust plate improves dynamic parallelism.

  Recently Added Patents
Spectral sensor for checking documents of value
Position-measuring device
Reception system including a mechanism countering pulsed interference
System and method for providing advertising content using a group training system
Methods and devices for enforcing network access control utilizing secure packet tagging
Method and system for routing telephony communications together with modified calling party identifier information
  Randomly Featured Patents
Smoke detecting method and device
Point-of-sale terminal system with integrated RF card reader and interchangeable base
Dynamic semiconductor memory device having excellent charge retention characteristics
Geranium plant named Casino
Laser system for rotating amplitude distribution of output light
Tuned phase stable limiter amplifier
Clutch bearing for automotive air conditioning compressor
Apparatus for the steam-cooking of foodstuffs
Dynamic seal using vulcanization of fluorocarbon elastomers
Cooling apparatus for articles operated at low temperature