Patents by Inventor Gerald J. Engelhardt

Gerald J. Engelhardt 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: 4415154
    Abstract: A low density hollow spherical ball body having radially extending openings spaced apart uniformly and extending therethrough is encased in a covering of an inter-resilient reinforcing layer and an outer flexible enclosing layer. A soft impact deadening target is provided for use with the ball. The target is adjustably and detachably mounted in a frame by elongated pile tabs attached to the peripheral front of the target and adapted to be wrapped around the frame and attached to the back of the target. The ball is burr coated and the target is provided with burr adherent material.
    Type: Grant
    Filed: February 25, 1981
    Date of Patent: November 15, 1983
    Inventor: Gerald J. Engelhardt