Patents by Inventor Roy B. Pugh

Roy B. Pugh 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).

  • Method and apparatus for applying additive to fibrous products and products produced thereby
    Publication number: 20040258790
    Abstract: A method and apparatus for incorporating an additive material into a fibrous web to be bonded into an elongated porous element by heating the fibers in a confined forming die with a heating medium adapted to bond the fibers to each other at spaced points of contact. An additive material is admixed with the heating medium and then the web of fibers is contacted with the heating medium/additive material mixture whereby the heating medium simultaneously carries the additive material into the fibrous web and heats the fibers to bond them into the porous element. The apparatus includes an adjustable venturi assembly through which the heating medium passes to create a pressure gradient adapted to aspirate a quantity of additive material and entrain a metered quantity of same in the heating medium.
    Type: Application
    Filed: July 14, 2004
    Publication date: December 23, 2004
    Applicant: Filtrona Richmond, Inc.
    Inventors: Bennett C. Ward, Raymond J. Nelson, Roy B. Pugh, Jackie F. Payne, Brian V. Nutter, Michael W. Spencer
  • Method and apparatus for applying additive to fibrous products and products produced thereby
    Patent number: 6814911
    Abstract: A method and apparatus for incorporating an additive material into a fibrous web to be bonded into an elongated porous element by heating the fibers in a confined forming die with a heating medium adapted to bond the fibers to each other at spaced points of contact. An additive material is admixed with the heating medium and then the web of fibers is contacted with the heating medium/additive material mixture whereby the heating medium simultaneously carries the additive material into the fibrous web and heats the fibers to bond them into the porous element. The apparatus includes an adjustable venturi assembly through which the heating medium passes to create a pressure gradient adapted to aspirate a quantity of additive material and entrain a metered quantity of same in the heating medium.
    Type: Grant
    Filed: March 11, 2003
    Date of Patent: November 9, 2004
    Assignee: Filtrona Richmond, Inc.
    Inventors: Bennett C. Ward, Raymond J. Nelson, Roy B. Pugh, Jackie F. Payne, Jr., Brian V. Nutter, Michael W. Spencer
  • Method and apparatus for applying additive to fibrous products and products produced thereby
    Publication number: 20030222372
    Abstract: A method and apparatus for incorporating an additive material into a fibrous web to be bonded into an elongated porous element by heating the fibers in a confined forming die with a heating medium adapted to bond the fibers to each other at spaced points of contact. An additive material is admixed with the heating medium and then the web of fibers is contacted with the heating medium/additive material mixture whereby the heating medium simultaneously carries the additive material into the fibrous web and heats the fibers to bond them into the porous element. The apparatus includes an adjustable venturi assembly through which the heating medium passes to create a pressure gradient adapted to aspirate a quantity of additive material and entrain a metered quantity of same in the heating medium.
    Type: Application
    Filed: March 11, 2003
    Publication date: December 4, 2003
    Inventors: Bennett C. Ward, Raymond J. Nelson, Roy B. Pugh, Jackie F. Payne, Brian V. Nutter, Michael W. Spencer