Patents by Inventor Siegbert Adelhardt

Siegbert Adelhardt 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).

  • Switching element cast into an insulating compound and method of making the same
    Patent number: 5890586
    Abstract: In a resin-embedded switching element provided with a casting containment, which encloses an area of the switching element to be covered by a resin, the casting containment has a fill hole consisting of a blind bore having at its inner end a diaphragm which is sufficiently thin that it can be ruptured by casting resin supplied to the fill hole under pressure and a measuring opening is formed in the top of the casting containment through which air can escape during filling of the casting containment with liquid casting resin and the level of the casting resin in the casting containment can be controlled.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: April 6, 1999
    Assignee: Cherry Mikroschalter GmbH
    Inventors: Siegbert Adelhardt, Helmut Brunnhuber, Wilfried Pohner, Stefan Gebhardt