Patents Assigned to ENFO Grundlagen Forschungs AG
  • Patent number: 4231394
    Abstract: A closing member for a ring valve is a flexible reed of substantially semicircular form comprising an outer ring portion with mounting points at its ends, and a plurality of inner ring portions connected to the outer ring portion by at least one radial web.
    Type: Grant
    Filed: May 30, 1979
    Date of Patent: November 4, 1980
    Assignee: Enfo Grundlagen Forschungs AG
    Inventors: Hans Hrabal, Josef Wimmer
  • Patent number: 4193424
    Abstract: In a valve where a port is opened and closed by movement of a lamina away from or towards the port, the lamina is held between two adjacent parts of the valve. To ensure that the lamina is held rigidly in place, it is provided with resiliently deformable projections on its side facing away from the port which it is to close.
    Type: Grant
    Filed: October 4, 1977
    Date of Patent: March 18, 1980
    Assignee: ENFO Grundlagen Forschungs AG
    Inventor: Hans Hrabal