Patents by Inventor Cornelis Jan Ravesteyn

Cornelis Jan Ravesteyn 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).

  • Swingable water and slush tube assembly for suction dredgers
    Patent number: 4083133
    Abstract: In a suction dredger, the connection between the water tube flange and the water duct flange is more reliable in operation, if the slush tube is adapted to turn by means of a rotary gland with respect to the slush tube flange to be rigidly coupled with the floating body, with the slush tube flange being connected through an arm with a water tube piece, while the water tube piece is connected through a flexible tubing with the water tube.
    Type: Grant
    Filed: October 18, 1976
    Date of Patent: April 11, 1978
    Assignee: Ballast-Nedam Groep N.V.
    Inventors: Cornelis Jan Ravesteyn, Jan DE Koning, Tjako Aaldrik Wolters