Patents by Inventor Fred Greter

Fred Greter 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 device for optionally passing a flow of medium through a first or second treatment member
    Patent number: 6668860
    Abstract: A switching device for optionally passing a flow of medium, such as a highly pressurized gas, through a first or second treatment member (2, 3), in which the medium is subjected to a treatment, such as filtration, heating, cooling or the like, comprises a medium inlet, a medium outlet and two distribution valves (1, 5), of which the valve bodies, which are provided with passages, are attached to a common rotation pin (10). For safety's sake, safety valves (12, 13, 14, 15) are arranged in the connections between distribution valves arranged at the inlet and at the oulet and the two treatment members.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: December 30, 2003
    Assignee: Indufil B.V.
    Inventors: Peter Alexander Josephus Pas, Fred Greter
  • Switching unit which is composed of a set of switching valves and is suitable for making a first and second medium flow through one of two plate coolers as desired
    Patent number: 6415819
    Abstract: A switching unit which is suitable for making a first and a second medium—for example oil and cooling water—flow through one of the two plate coolers as desired comprises four switching valves. The valve bodies of the four valves (1-4) are connected to one another by an actuating mechanism (19, 20, 21, 22), in such a manner that when one of the four valves is switched the other three valves are also switched. This definitively prevents incorrect switching operations.
    Type: Grant
    Filed: July 18, 2001
    Date of Patent: July 9, 2002
    Assignee: Indufil B.V.
    Inventors: Peter Pas, Fred Greter
  • Switching uint which is composed of a set switching valves and is suitable for making a first and second medium flow through one of two plate coolers as desired
    Publication number: 20020023685
    Abstract: A switching unit which is suitable for making a first and a second medium—for example oil and cooling water—flow through one of the two plate coolers as desired comprises four switching valves. The valve bodies of the four valves (1-4) are connected to one another by an actuating mechanism (19, 20, 21, 22), in such a manner that when one of the four valves is switched the other three valves are also switched. This definitively prevents incorrect switching operations.
    Type: Application
    Filed: July 18, 2001
    Publication date: February 28, 2002
    Inventors: Peter Pas, Fred Greter