Patents by Inventor Murray D. Etherington

Murray D. Etherington 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).

  • Fluid operable hammer
    Patent number: 4150603
    Abstract: A fluid operable hammer including variable volume exhaust fluid receiving chamber means cooperable with improved motive fluid inlet and exhaust valve means.
    Type: Grant
    Filed: September 6, 1977
    Date of Patent: April 24, 1979
    Assignee: Joy Manufacturing Company
    Inventors: Murray D. Etherington, David V. Roberts