Patents by Inventor Dwayne N. Lewis

Dwayne N. Lewis has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Adhesive spray gun and nozzle attachment
    Patent number: 4785996
    Abstract: An apparatus for spraying heated hot melt adhesive in elongated strands or fibers in a controlled, spiral pattern upon a substrate comprises a spray gun having a nozzle formed with an adhesive delivery passageway and an air delivery passageway both of which terminate at the base of the nozzle. A nozzle attachment in the form of an annular plate is mounted to the base of the nozzle by an end cap. The annular plate is formed with a throughbore which receives hot melt adhesive from the adhesive delivery passageway and ejects an adhesive bead through a nozzle tip formed on the plate. An annular groove formed in the plate facilitates the drilling of air jet bores therein at an angle relative to the throughbore and adhesive bead ejected therefrom.
    Type: Grant
    Filed: April 23, 1987
    Date of Patent: November 22, 1988
    Assignee: Nordson Corporation
    Inventors: Roger A. Ziecker, Bentley J. Boger, Dwayne N. Lewis
  • Adhesive spray gun and nozzle attachment
    Patent number: RE33481
    Abstract: An apparatus for spraying heated hot melt adhesive in elongated strands or fibers in a controlled, spiral pattern upon a substrate comprises a spray gun having a nozzle formed with an adhesive delivery passageway and an air delivery passageway both of which terminate at the base of the nozzle. A nozzle attachment in the form of an annular plate is mounted to the base of the nozzle by an end cap. The annular plate is formed with a throughbore which receives hot melt adhesive from the adhesive delivery passageway and ejects an adhesive bead through a nozzle tip formed on the plate. An annular groove formed in the plate facilitates the drilling of air jet bores therein at an angle relative to the throughbore and adhesive bead ejected therefrom.
    Type: Grant
    Filed: April 28, 1989
    Date of Patent: December 11, 1990
    Assignee: Nordson Corporation
    Inventors: Roger A. Ziecker, Bentley J. Boger, Dwayne N. Lewis