Patents by Inventor Ted N. Tilman

Ted N. Tilman 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).

  • Soft break switch
    Patent number: 4822961
    Abstract: A soft break switch for forming a short circuit between two conductors while the switch is in a closed position, for forming an increasingly resistive circuit between the conductors while the switch is being moved to an open position, and for forming an open circuit between the conductors when the switch is in an open position. The resistive circuit enhances arc suppression.
    Type: Grant
    Filed: March 7, 1988
    Date of Patent: April 18, 1989
    Inventors: Peter E. Hugin, Ted N. Tilman
  • High direct and alternating current switch
    Patent number: 4215253
    Abstract: Presented is a high power switch for making, breaking and carrying high direct and alternating current circuits. The switch incorporates pairs of contacts that operate in sequence, one of the contact pairs being the first to "make" and the last to "break" and the other contact constituting a movable conductive bridge to carry the primary load through the switch structure.
    Type: Grant
    Filed: December 28, 1978
    Date of Patent: July 29, 1980
    Inventor: Ted N. Tilman
  • High current high voltage switch structure with conductive piston
    Patent number: 3941957
    Abstract: Presented is a switch structure having high current carrying capacity over a broad range of frequencies from DC to 50 megacycles, constructed to be air operated so as to eliminate the need for an external actuator. The switch includes an airactuated piston which reciprocates between open and closed positions of the switch, and which also constitutes the movable contact element of the switch.
    Type: Grant
    Filed: May 9, 1974
    Date of Patent: March 2, 1976
    Inventor: Ted N. Tilman