Patents by Inventor Martens Isenberg, Jr.

Martens Isenberg, Jr. 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).

  • Patent number: 3996875
    Abstract: An improvement in a steering assembly for navigating a boat, such as a sailboat, having a vertically movable centerboard and/or an adjustable backstay either or both of which are movable by a hydraulic means including a hydraulic pump whereby to raise or lower the centerboard and/or rake the mast attached to the backstay, the boat having a steering wheel connected to a hollow steering wheel shaft which shaft in turn is connected to a steering sprocket. The improvement resides in means for simultaneously either (a) raising or lowering the centerboard or (b) adjusting the tension on the backstay and steering which means comprises a hydraulic pump shaft connected to a hydraulic pump, said pump shaft disposed through the hollow steering wheel shaft, said shaft terminating at the steering wheel where it is connected to an actuating means.
    Type: Grant
    Filed: December 4, 1974
    Date of Patent: December 14, 1976
    Inventor: Martens Isenberg, Jr.