Patents by Inventor Donald C. Wohlin

Donald C. Wohlin 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: 5464220
    Abstract: A golf practice device includes a first strip having indicia for indicating proper positioning of a golfer's feet, a second strip having a marker for indicating a proper ball position, and third and fourth strips pivotally interconnecting the first and second strips to form an adjustable parallelogram. A template is attached to the first and second strips at the corner between the two for indicating the angle therebetween. The template includes indicia for indicating predetermined angles corresponding to particular golf clubs so that, by arranging the strips to form a particular predetermined angle, the correct golf stance and ball placement is indicated for a selected golf club. The spacing between the first and second strips is adjustable to allow for different sized golfers. In one form, an adjustable and customizable template is provided. Also, optionally, a mirror and a back swing clicker are provided for improved feedback to a golfer using the device.
    Type: Grant
    Filed: November 30, 1994
    Date of Patent: November 7, 1995
    Inventors: Dale G. Hansen, Donald C. Wohlin