Patents by Inventor Robert E. Parkinson

Robert E. Parkinson 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).

  • Striker bar for rotary cage grinder
    Patent number: 4307845
    Abstract: A striker bar for a rotary cage grinder in which the impact-receiving portions of the bar are of an abrasion resistant ceramic, such as aluminum oxide, silicon carbide, or tungsten carbide. The bar includes a block of the ceramic, preferably formed in sections abutting end-to end, adhesively affixed to an angle iron mounting, which is removably attached to supporting structural members in the cage.
    Type: Grant
    Filed: September 12, 1977
    Date of Patent: December 29, 1981
    Assignee: United States Steel Corporation
    Inventors: Thomas M. Larimer, Joseph P. McGinness, Robert E. Parkinson
  • Coated metal fasteners
    Patent number: 3936407
    Abstract: Coated nails and other driven fasteners designed to increase the force requied to withdraw the nail, screw, tack, staple, or other fastener from wood or similar materials, are disclosed. The coating for the metal fasteners is an emulsion or rosin or a rosin-like resin in an ethylene co- or terpolymer.
    Type: Grant
    Filed: September 23, 1974
    Date of Patent: February 3, 1976
    Assignee: United States Steel Corporation
    Inventor: Robert E. Parkinson
  • Coated articles
    Patent number: 3931448
    Abstract: Aqueous dispersions in which ethylene-carboxylic acid copolymers and a low molecular weight phenolic resin are combined to produce a material useful as an adhesive, insulator, primer or coating. Additives enhancing the properties of the composition are also disclosed.
    Type: Grant
    Filed: December 7, 1973
    Date of Patent: January 6, 1976
    Assignee: United States Steel Corporation
    Inventor: Robert E. Parkinson