Patents by Inventor David M. Raber

David M. Raber 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: 4940433
    Abstract: A control for a high performance watercraft that will automatically cut engine power and stabilize pitch attitude when the watercraft is airborne. This device maintains a manually trimmed pitch attitude when fully airborne. A gyroscope senses the boat's attitude and, when airborne, causes an airfoil or airfoils to correct a nose high or low attitude so that when the craft re-enters the water, it is at the proper, safe attitude. When back in the water, the engines return to the throttle position selected and the airfoil or airfoils return to the previously manually trimmed position. When in the water, the airfoil or airfoils can be manually trimmed so as to fine tune the craft for both water and wind conditions. It is this tuned position that the gyroscope seeks to attain while airborne.
    Type: Grant
    Filed: May 30, 1989
    Date of Patent: July 10, 1990
    Inventor: David M. Raber