Patents by Inventor Philip John Merrifield

Philip John Merrifield 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).

  • Patent number: 6749132
    Abstract: A spray gun includes a main body and a spray head. The spray head has an air cap, a hollow nozzle member having a nozzle tip for dispensing a liquid to be sprayed. The hollow nozzle member has a radially extending weir which together with a surface of the main body defines an air distribution chamber for receiving and distributing compressed air from a supply inlet. An annular sealing member is sealingly disposed between the radially extending weir and the surface of the main body, dividing the chamber, so that air passing into the chamber through an opening to one side of the annular wall is directed to a central aperture of the air cap and air passing into the chamber through an opening to the other side of the annular wall is directed to lateral apertures of the air cap.
    Type: Grant
    Filed: February 25, 2002
    Date of Patent: June 15, 2004
    Assignee: ITW Limited
    Inventors: Neville Thomas Pettit, Philip John Merrifield
  • Publication number: 20020176944
    Abstract: The invention relates to a set of two or more spray guns for use when applying two or more types of fluid coating to an article, the spray guns bearing a recognizable coding sequence indicating the sequence by which the spray guns are to be used.
    Type: Application
    Filed: February 15, 2002
    Publication date: November 28, 2002
    Inventor: Philip John Merrifield
  • Publication number: 20020166902
    Abstract: The invention provides a spray gun comprising a main body 2, a spray head 6, an inlet 12 for a liquid to be sprayed, and an inlet 10 for a supply of a compressed air;
    Type: Application
    Filed: February 25, 2002
    Publication date: November 14, 2002
    Inventors: Neville Thomas Pettit, Philip John Merrifield
  • Patent number: 5678591
    Abstract: A multi-component feed system to feed two fluid materials from a feed tank to a spraygun is described. The combined pressure feed tank comprises a pressure feed tank with a lid. Inside the tank is a removable support structure having a cone-shaped member with a central chamber supporting a second container closed by a lid. A splash-proof membrane extends between the inner wall of container and the outer wall of container to protect a second fluid component, e.g. a catalyst from entering the lower chamber of tank. Air is fed to containers and via a regulator, a regulator pipe and through an aperture in the lid. Pressure air feeds the fluid components via tubes to a spray gun, where the components combine to be sprayed.
    Type: Grant
    Filed: May 20, 1996
    Date of Patent: October 21, 1997
    Assignee: ITW Limited
    Inventors: Philip John Merrifield, Bernard Michael Daley