Patents by Inventor John A. Henns

John A. Henns 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).

  • Self adjusting water ski assembly
    Patent number: 5385495
    Abstract: A water ski fin extends through the rear of a water ski. Pivotally connected to a lower portion of the fin is a wing extending substantially perpendicularly from the fin. A device is connected to the wing that allows the wing to pivot and change its angle of attack as a function of the speed of the fin through the water.
    Type: Grant
    Filed: April 8, 1993
    Date of Patent: January 31, 1995
    Inventor: John A. Henns
  • Self adjusting water ski assembly
    Patent number: 5342231
    Abstract: A water ski fin extends through the rear of a water ski. Pivotally connected to a lower portion of the fin is a wing extending substantially perpendicularly from the fin. A linkage is connected to the wing that permits the wing from pivoting until the speed of the fin through the water exceeds a predetermined velocity to pivot and change its angle of attack in response to the speed of the fin through the water exceeding the predetermined velocity.
    Type: Grant
    Filed: May 5, 1993
    Date of Patent: August 30, 1994
    Inventor: John A. Henns