Patents by Inventor James T. Sikorski

James T. Sikorski 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).

  • Method of and apparatus for severing glass
    Patent number: 4454972
    Abstract: An apparatus for partially fracturing a glass body along a score line to facilitate subsequent severance of the body along such score line by conventional top and bottom roller devices. The partial fracturing is effected by an apparatus having an impact element periodically engageable against the glass body on the glass surface opposite the surface on which the score line is inscribed.
    Type: Grant
    Filed: April 15, 1982
    Date of Patent: June 19, 1984
    Assignee: Libbey-Owens-Ford Company
    Inventors: Robert E. Maltby, Jr., James T. Sikorski
  • Apparatus for testing glass
    Patent number: 4395917
    Abstract: Apparatus for the destructive testing of glass sheets. The sheets to be tested are subjected to a differential pressure condition by establishing a vacuum on one side thereof and lowering the pressure on such side until the glass deflects to its breaking point. The vacuum system includes a control circuit which enables lowering the pressure in a controlled linear manner with time. The apparatus is designed to permit selection of and testing of sheets substantially immediately after the capping operation.
    Type: Grant
    Filed: October 26, 1981
    Date of Patent: August 2, 1983
    Assignee: Libbey-Owens-Ford Company
    Inventors: Robert E. Maltby, Jr., James T. Sikorski