Patents by Inventor Roy J. Dunlop

Roy J. Dunlop 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).

  • Publication number: 20030084556
    Abstract: A tool for inserting a plump plunger through a packing in a fluid end of a plunger pump enables easy and rapid insertion of the plunger through the packing without damaging the packing or the pump plunger.
    Type: Application
    Filed: November 6, 2001
    Publication date: May 8, 2003
    Inventor: Roy J. Dunlop
  • Patent number: 6431165
    Abstract: A heat-resistant, flat sheet with a reflective surface is used to remove food residues from a barbecue grill after cooking. The flat sheet reflects and concentrates heat in the grill to oxidize the food residues quickly and efficiently. Remaining ash is easily brushed off of the grill and no residues remain to contaminate food to be cooked. The advantage is a faster, more thorough cleaning with significantly reduced energy consumption.
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: August 13, 2002
    Inventors: Clifford F. Dow, Roy J. Dunlop