Patents by Inventor Carl U. Soderbaum

Carl U. Soderbaum 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).

  • Folding boat propeller
    Patent number: 4364711
    Abstract: A boat propeller with foldable blades, a so-called folding propeller, in which the mounting axes of the blades in the hub are inclined towards the rotational axis of the hub, so that the blades are movable between their folded and unfolded positions by rotating essentially one-half turn.
    Type: Grant
    Filed: January 13, 1981
    Date of Patent: December 21, 1982
    Assignee: AB Volvo Penta
    Inventors: Lennart H. Brandt, Ingvar O. Hultmark, Lars H. Petersson, Carl U. Soderbaum
  • Boat propeller
    Patent number: 4275991
    Abstract: The invention relates to a boat propeller with foldable blades, a so-called folding propeller. The characteristic feature of the propeller is that it is provided with resilient structure disposed to brake the swinging movement of the blades as they are spread out from the folded position to the operating position.
    Type: Grant
    Filed: June 14, 1979
    Date of Patent: June 30, 1981
    Assignee: AB Volvo Penta
    Inventor: Carl U. Soderbaum