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
Biometric data display system and method
Zero-copy network and file offload for web and application servers
Compositions of PD-1 antagonists and methods of use
Economic filtering system for delivery of permission based, targeted, incentivized advertising
Memory device and method for dynamic random access memory having serial interface and integral instruction buffer
Systems and methods for adaptive blind mode equalization
  Randomly Featured Patents
Adhering composition and method of applying the same
Door knob construction
Method and apparatus of echo planar imaging with real-time determination of phase correction coefficients
Aircraft automatic landing system
Multistage regulating valve
Stylus position sensing and digital camera with a digital micromirror device
Tire tread
Filter medium
Compositions containing platinum
Electronic device, and method of patterning a first layer