Patents by Inventor Jack E. DiFranco

Jack E. DiFranco 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: 4979742
    Abstract: A tennis ball holder (1) has flexible petals (4) arranged around a tennis ball receiving recess (10). Nap-catching pins (9) attached to the petals project into the recess. When a tennis ball (21) is forced against the holder, the petals open outwardly, permitting the ball to enter the recess. The pins are then forced elastically into the nap (20) that covers the ball, thereby holding the ball in place. When the ball is manually pulled away, the pins release the nap undamaged and the petals elastically return to their original position. The holder is designed for economical fabrication in one piece. The holder may be attached to the handle end of a tennis racket for retrieving fallen balls without stopping. Alternatively, the holder may be attached to clothing for holding a ball not in use.
    Type: Grant
    Filed: October 10, 1989
    Date of Patent: December 25, 1990
    Inventor: Jack E. DiFranco
  • Patent number: 4903375
    Abstract: A spring clip attaches to the temple bar of eyeglasses to engage the edge of a fabric pocket for temporary but secure storage. The clip is formed of a single piece of springy plastic in the form of inner and outer elongate legs joined at one end. The inner leg has at least two transverse grooves to receive elastic O-rings. The O-rings slip over a temple bar and the inner leg. The O-rings hold the inner leg of the clip tightly against the temple bar and the outer leg holds the outer surface of the fabric pocket against the inner leg with spring bias. By providing O-rings of several different diameters, the clip is readily attached to a variety of sizes and shapes of temple bars or earpieces without tools or special skills.
    Type: Grant
    Filed: July 7, 1989
    Date of Patent: February 27, 1990
    Inventor: Jack E. DiFranco
  • Patent number: 4815738
    Abstract: A tennis ball retriever at the handle end of a tennis racket has flexible petals arranged around a ball-receiving recess. Nap-catching pins attached to the petals project into the recess. When the retriever is forced over a tennis ball, the petals open outwardly, permitting the ball to enter the recess. The pins are forced elastically into the nap covering the ball, thereby holding the ball in place so that it may be lifted from the ground without stooping.
    Type: Grant
    Filed: May 7, 1987
    Date of Patent: March 28, 1989
    Inventor: Jack E. DiFranco