Patents by Inventor Richard G. Ingraham

Richard G. Ingraham 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).

  • Billiard ball
    Patent number: 3937467
    Abstract: An improved billiard ball is provided comprising a major portion and a minor portion together forming a solid, spherical body. The minor portion is preformed with inclined surfaces which define an interlock adapted to cooperate with associated surfaces of the major portion to form a mechanical bond between the major and minor portions after the major portion is formed about the minor portion. When the minor portion is molded in the shape of a bracelet, a slit may be provided therein to relieve stresses caused by shrinkage during cooling.
    Type: Grant
    Filed: March 10, 1975
    Date of Patent: February 10, 1976
    Assignee: Albany International Corporation
    Inventors: Richard W. Benson, John R. Crnak, Richard G. Ingraham