Patents Represented by Attorney Howard P. West, Jr.

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  • Apparatus for heating yarn
    Patent number: 4880961
    Abstract: A yarn heating element wherein fixed elongated core having a heater therein serves as a support for a sleeve rotatably mounted to and telescoped over the core. The space between the core and sleeve can be varied along their lengths for controlling heat radiated from the core to the shell to control the temperature profile along the length of the shell. Varying the winding density of the heater can serve the same purpose.
    Type: Grant
    Filed: March 2, 1988
    Date of Patent: November 14, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: James E. Duncan