Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Secure data exchange for processing requests
Chair
Multiple input multiple output transceiver
Method and apparatus of communication using soft decision
Door-activated entry light fixture
Semiconductor device
Taxi cab key chain
  Randomly Featured Patents
Electromaagnetic high-pressure injection valve
Connection fitting for tubular conduits
On-vehicle display apparatus
Method and system for selectively dedicating resources for recording data exchanged between entities attached to a network
Dentifrice composition
Liquid crystal display having separate connection element to couple upper and lower containers together
Method, system and smart card reader for management of access to a smart card
Servo-linearized opto-electronic analog interface
System and method for initializing variables in an object-oriented program
Semiconductor device and method of forming wafer-level multi-row etched leadframe with base leads and embedded semiconductor die