Patents by Inventor Herbert Eckhard

Herbert Eckhard 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).

  • Drainage canal
    Patent number: 4726392
    Abstract: A drainage canal assembly includes a canal housing for receiving electrical components, a drainage canal in the form of a syphon formed in the canal housing, and a check valve disposed in the drainage canal permitting liquid to leave the canal housing but preventing liquid and dust from entering.
    Type: Grant
    Filed: April 16, 1986
    Date of Patent: February 23, 1988
    Assignee: Brown, Boveri & Cie AG
    Inventors: Gerhard Schwarz, Herbert Eckhard