Patents by Inventor Mark Richard Whitmire

Mark Richard Whitmire 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).

  • Coupling for joining ductile iron and plastic pipes
    Patent number: 10094504
    Abstract: A coupling for use in joining together a ductile iron pipe and a plastic pipe includes a ductile portion, a plastic portion and a transition portion that has a frustoconical transition inside surface. The ductile portion has a first end that is adapted to accept the ductile iron pipe, an annular groove adjacent to the first end that is adapted to receive a sealing gasket, and a ductile engagement portion having an inside diameter that is sized so as to form a friction fit with the outside diameter of the ductile iron pipe. The plastic portion has a second end that is adapted to accept the plastic pipe, an annular groove adjacent to the second end that is adapted to receive a sealing gasket, and a plastic engagement portion having an inside diameter that is sized so as to form a friction fit with the outside diameter of the plastic pipe.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: October 9, 2018
    Inventor: Mark Richard Whitmire
  • COUPLING FOR JOINING DUCTILE IRON AND PLASTIC PIPES
    Publication number: 20150292657
    Abstract: A coupling for use in joining together a ductile iron pipe and a plastic pipe includes a ductile portion, a plastic portion and a transition portion that has a frustoconical transition inside surface. The ductile portion has a first end that is adapted to accept the ductile iron pipe, an annular groove adjacent to the first end that is adapted to receive a sealing gasket, and a ductile engagement portion having an inside diameter that is sized so as to form a friction fit with the outside diameter of the ductile iron pipe. The plastic portion has a second end that is adapted to accept the plastic pipe, an annular groove adjacent to the second end that is adapted to receive a sealing gasket, and a plastic engagement portion having an inside diameter that is sized so as to form a friction fit with the outside diameter of the plastic pipe.
    Type: Application
    Filed: April 13, 2015
    Publication date: October 15, 2015
    Inventor: Mark Richard Whitmire