Patents by Inventor Ernst H. Schoellkopf

Ernst H. Schoellkopf 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).

  • Leakage protective apparatus for storage containers or the like
    Patent number: 4161957
    Abstract: A leakage protective apparatus for the outlet line of a storage container for flowable material includes a conduit arrangement which connects a storage container and consumer and itself includes a pump for pumping the flowable material from the storage container to the consumer. The conduit arrangement also includes an intermediate container connected between the pump and storage container. A negative pressure source is connected to the intermediate container. The conduit also includes a shutoff valve. A detecting means is provided for detecting a predetermined minimum negative pressure in the conduit arrangement, a switching device being provided for closing the shutoff valve when the detecting means detects a pressure above the predetermined minimum negative pressure.
    Type: Grant
    Filed: September 28, 1976
    Date of Patent: July 24, 1979
    Assignee: Ironflex AG
    Inventor: Ernst H. Schoellkopf