Patents by Inventor Ernie Vadersen

Ernie Vadersen 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).

  • Golf club set with optimal center of mass
    Publication number: 20030139222
    Abstract: A set of golf club irons which have three parallel slots disposed in the back side of each club head, where the top slot is shorter than the middle slot, which in turn is shorter than the bottom slot, and where the depth of the middle slot remains the same for all clubs, but the depth of the top slot decreases progressively and the depth of the bottom slot increases progressively from the lesser lofted iron to the higher lofted iron, such that the center of mass is progressively higher over the set from the lesser lofted iron to the higher lofted iron.
    Type: Application
    Filed: January 18, 2002
    Publication date: July 24, 2003
    Inventor: Ernie Vadersen
  • Golf club hosel
    Patent number: 5511780
    Abstract: A golf club hosel comprising three segments is disclosed, the upper segment being circular in cross-section and adapted to receive a golf club shaft, a tapered middle segment having a circular cross-section diminishing in diameter from top to bottom, and an elliptical in cross-section lower segment adapted to join the hosel to the club head.
    Type: Grant
    Filed: July 6, 1995
    Date of Patent: April 30, 1996
    Inventor: Ernie Vadersen