Patents by Inventor Charles W. Kertz

Charles W. Kertz 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).

  • Patent number: 5686884
    Abstract: A power supervised emergency warning device provides a shaking motion to a piece of furniture coupled thereto upon receipt of an electronic actuating signal from an external closed contact type device. A backup battery provides power to the device in the case of a main power outage. External warning devices may be coupled to the device which are activated upon receipt by the device of the actuating signal. Additional external device hook-ups are provided as well as the ability to be coupled to auxiliary modules. The auxiliary modules accept actuating signals from additional external closed contact type devices to produce shaking. Additional indication devices may also be coupled thereto. Additional auxiliary modules may also be chained thereto.
    Type: Grant
    Filed: January 3, 1996
    Date of Patent: November 11, 1997
    Inventors: Dennis S. Larkin, William J. Aaron, Jr., Charles W. Kertz
  • Patent number: 4399614
    Abstract: This horseshoe measuring device consists primarily of a base member, which is used as a straight edge, for determining if a horseshoe player has a "ringer", or not, and a pair of pivotal arms are secured to the base member, for accurately measuring the distance between a pair of horseshoes and the anchored horseshoe peg. The device further consists of a file, for removing burrs from horseshoes, so as to prevent them from damaging the peg.
    Type: Grant
    Filed: April 23, 1981
    Date of Patent: August 23, 1983
    Assignee: Charles W. Kertz
    Inventor: Charles W. Kertz