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
Matching geometry generation and display of mammograms and tomosynthesis images
Selecting content for storage in a multi-device cache
Field emission cathode device and field emission display using the same
Method and apparatus for management and analysis of services in VoIP networks
Synergistic preparations based on mixtures of glycerol ether with aromatic alcohol for controlling mycobacteria
Cordless hand blender
Telecommunications system and method
  Randomly Featured Patents
Double hermetic package for fiber optic cross connect
Lifting tool
Integrated unit, optical pickup, and optical recording medium drive device
Process for the continuous preparation of 2,2,6,6-tetramethylpiperidine
Incremental position-based guidance for a UAV
Fuel moisture analog
Natural language hypernym weighting for word sense disambiguation
Inhalation device with a dose counting unit