Patents by Inventor John S. Downs

John S. Downs 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).

  • Apparatus for manipulation of impactor hammers
    Patent number: 5092529
    Abstract: An apparatus for manipulating horizontal impactor hammers includes a crossbeam and a pair of depending lift arms, each lift arm having a corresponding pivot arm configured to be secured to respective ends of the hammer and to pivot about the lift arm. Once the pivot arms are attached to the ends of the hammer, the crossbeam is elevated, withdrawing the hammer from the rotor and causing the hammer to invert about the pivot axis for reinsertion into the rotor. Provisions are also made for rotating the withdrawn hammer about a vertical axis.
    Type: Grant
    Filed: October 3, 1990
    Date of Patent: March 3, 1992
    Assignee: Nordberg Inc.
    Inventors: David J. Bechler, John S. Downs