Patents by Inventor Norbert Sann

Norbert Sann 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).

  • Patent number: 5560824
    Abstract: A filter device has a housing with connections for a fluid and can be secured to a filter pot. The filter has a filter element secured by a holder. A closure prevents the undesired leakage of fluid. The closure has two sealing plates with at least partly bound openings in mutually staggered array in two different planes. The openings can be mutually moved under the effect of a power store for closing or opening the openings. As the filter pot is moved further away from the housing, the closure gradually seals at least one of the connections and/or the filter pot off from the environment. The filter device has a universally usable closure which can be economically produced, requires little space inside the device and operates reliable.
    Type: Grant
    Filed: September 21, 1995
    Date of Patent: October 1, 1996
    Assignee: Hydac Filtertechnik GmbH
    Inventors: Norbert Sann, Jurgen Hausdorf
  • Patent number: 5200067
    Abstract: A device for mounting a filter element is located in a housing. The housing is sealed on its outside wall in contact with a mounting member. The mounting member is mounted on an inside partition of the container by a sealing connection. This sealing connection has a sealing element inserted between sealing surfaces of the mounting member and the inside partition. A holding device for fixing the position of filter element in the housing incorporates a pressure element which engages the filter element to secure the filter element against rotational movement relative to the housing.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: April 6, 1993
    Assignee: Hydac Filtertechnik GMBH
    Inventor: Norbert Sann