Patents by Inventor Jan P. Koert

Jan P. Koert 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).

  • Detachable coupling for a suction head
    Patent number: 4597200
    Abstract: Suction pipe with trailing head for a trailing suction dredger, the pipe being provided at its lower end with a connection piece of the trailing head in which the essentially rectangular throughflow opening of the trailing head passes into the circular cross section of the pipe. A replaceable endpiece or trailing head part, which forms the suction aperture or suction slit, is or can be detachably fixed at the side facing the connection piece by a quick action coupling to the connection piece in such a way that it rotates about a horizontal cross-shaft.
    Type: Grant
    Filed: October 29, 1984
    Date of Patent: July 1, 1986
    Assignee: IHC Holland N.V.
    Inventors: Paulus van der Meer, Jan P. Koert