Patents by Inventor Robert Callis

Robert Callis 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: 5976028
    Abstract: A golf club spine finder comprising a shaft holding member which comprises a bottom wall and a vertical member. The vertical member comprises a plurality of extended members, each extended member further comprising extended member apertures. A gripping member functions to secure the shaft holding member in a substantially upright position. A golf club shaft is then removably inserted through the extended member apertures of the shaft holding member, the golf club shaft comprising a traditional grip end and club head end. An indicator handle comprises at least one aperture further comprising roller bearings therein and a display. The golf club shaft is removably inserted through the indicator handle substantially near the club head end of the golf club shaft. The indicator handle functions to measure the flexure of the golf club shaft at differing angles when depressed downwardly as the golf club shaft is rotated.
    Type: Grant
    Filed: June 22, 1998
    Date of Patent: November 2, 1999
    Inventors: Carl Ciccarello, Iain Mossman, Robert Callis