Patents by Inventor Achim Kessler

Achim Kessler 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).

  • Water-jet drive mechanism for driving and controlling of particularly shallow-draught watercrafts
    Patent number: 4417877
    Abstract: A water-jet drive mechanism for driving and controlling a watercraft. A centrifugal water pump is encased in the support housing so that its inlet and its discharge nozzle open through the undersurface of the support housing. The pump drive shaft is inclined and lies in a vertical plane arranged at an angle to the direction of water discharge from the nozzle. A normally open ventilating valve provided in a wall of the pump is closed by the flow of water through the pump.
    Type: Grant
    Filed: June 9, 1981
    Date of Patent: November 29, 1983
    Assignee: Schottel-Werft Josef Becker GmbH & Co. KG
    Inventors: Franz Krautkremer, Achim Kessler, Gerd Krautkraemer