Patents by Inventor John T. Darner

John T. Darner 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: 4691922
    Abstract: Golf practice device, especially for putting and approach shot practice. The device comprises an elongated shaft having a tapered end for insertion into the ground, a stop adjacent to the pointed end for limiting the depth of insertion, and a target spaced a short distance from the pointed end for indicating the accuracy of the golfer's stroke. The target is preferably a bendable disk having a diameter about the same as the diameter of a standard golf hole, i.e. about 4.25 inches. The distance from the stop to the target may range from about one-half the diameter of a golf ball (which is 1.68 inches) to about the diameter of a golf ball. The golfer inserts the pointed end of the shaft into the ground so that the shaft is substantially upright. He or she then putts or chips the ball toward the shaft. If the ball comes to rest either against or under the marker, the golfer has "holed out".
    Type: Grant
    Filed: March 10, 1986
    Date of Patent: September 8, 1987
    Inventors: Robert M. Peel, John T. Darner