Patents by Inventor Erhard Runtsch

Erhard Runtsch 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).

  • Device for limiting currents
    Patent number: 4021699
    Abstract: The combination of a current limiting device and at least one openable isolating point electrically connected therewith, the current limiting device including a variable, pressure-sensitive solid-state resistance the resistance being variable from an initially relatively very low resistance or impedance value to a relatively very high resistance or impedance value when the isolating point is opened, the solid-state resistance being integrated into the isolating point as a switch contact member.
    Type: Grant
    Filed: August 13, 1975
    Date of Patent: May 3, 1977
    Assignee: Brown, Boveri & Cie. A.G.
    Inventor: Erhard Runtsch