Patents by Inventor Robert Newkirk

Robert Newkirk 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).

  • TORQUE REDUCING VALVE SEAT
    Publication number: 20180149278
    Abstract: A valve seat includes an annular sealing surface comprising a rubber-lubricant mixture; and a seat body. A valve includes a valve body; a valve element disposed within the valve body; and a valve seat comprising a rubber-lubricant mixture, the valve element configured to seal against the valve seat. A method for forming a valve seat includes mixing a raw rubber with a lubricant to form a rubber-lubricant mixture; placing the rubber-lubricant mixture into a mold configured to form a valve seat; and curing the rubber-lubricant mixture.
    Type: Application
    Filed: November 29, 2016
    Publication date: May 31, 2018
    Inventors: Ashraf Abouelleil, Purushottam Savalia, Robert Newkirk
  • Foldable shelving unit
    Patent number: 5899346
    Abstract: A space saver shelving unit adapted to straddle the tank of a toilet for convenient shelves above the tank. The shelving unit includes detachable leg members which connect to a folding upper section. The upper section has a plurality of shelves pivotably attached to a rear panel and front posts. The leg members are secured to the back panel and posts to supply rigidity retaining the shelves in their proper position. The foldable shelving unit allows for convenient storage and shipment by folding to a flat surface.
    Type: Grant
    Filed: May 6, 1997
    Date of Patent: May 4, 1999
    Assignee: Zenith Products Corp.
    Inventor: John Robert Newkirk
  • Shelving unit
    Patent number: D383921
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: September 23, 1997
    Assignee: Zenith Products Corp.
    Inventor: John Robert Newkirk
  • Shelf unit
    Patent number: D388267
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: December 30, 1997
    Assignee: Zenith Products Corporation
    Inventors: John Robert Newkirk, Paul Henry Winter
  • Cabinet
    Patent number: D389668
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: January 27, 1998
    Assignee: Zenith Products Corporation
    Inventors: John Robert Newkirk, Paul Henry Winter
  • Shelf unit with cabinet
    Patent number: D392121
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: March 17, 1998
    Assignee: Zenith Products Corporation
    Inventors: John Robert Newkirk, Paul Henry Winter