Patents by Inventor Peter McFarlane

Peter McFarlane 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).

  • Hammer
    Patent number: 4344353
    Abstract: A hammer or impactor apparatus including improved motive fluid means cooperable with spring bias means to reciprocably drive a hammer element and an improved process of hammer cycling achieved thereby.
    Type: Grant
    Filed: May 18, 1981
    Date of Patent: August 17, 1982
    Assignee: Joy Manufacturing Company
    Inventors: John Duff, Peter McFarlane