Resources Contact Us Home
Molded roller for tape cartridge

Image Number 3 for United States Patent #6129301.

A drive roller for a belt-driven tape cartridge is molded of composite polymeric material in a single step to include outer segment and inner segment integrally formed together with a radial web segment between the outer and inner segments to provide highly concentric operating surfaces on the outer segment and in the inner segment. Electrical conductivity throughout the molded drive roller is provided by including in the composite material a quantity of carbon powder, and selective shrinkage of the composite material during cooling from molding temperatures provides desirable bearing surface within the inner bore through the inner segment. Thrust bearing surfaces at the ends of the inner segment engage mating bearing surfaces that include lubricant traps to inhibit migration of lubricant away from the bearing surfaces of the drive roller. Stepped inner bore and axially ospaced corresponding stepped axle diameters promotes lower frictional drag, provides a reservoir for lubricant, and facilitates removal of the molded component from its molding cavity.

  Recently Added Patents
Stretchable elastic laminate having increased CD elongation zones and method of production
Wire guide
Method and apparatus for modeling computer program behaviour for behavioural detection of malicious program
Methods and apparatus for address translation functions
Techniques for data assignment from an external distributed file system to a database management system
Bad column management with bit information in non-volatile memory systems
Integrated disk driving module including a stepping motor integrally formed with a base unit
  Randomly Featured Patents
Compounds and methods for modulating OB-cadherin mediated cell adhesion
Article inspection and stabilizing system
Methods and apparatus for detecting impurities in semiconductors
Media player
Headliner having a sunroof opening
Stylized microphone
Developing device for image forming apparatus and process cartridge having the same
Frame assembly for snowmobile
Liquid electrophotographic reproduction machine having a desired abrasion fix level