Patents by Inventor Lynn W. Craig

Lynn W. Craig 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).

  • Belt refurbishing
    Patent number: 4254589
    Abstract: Stainless steel belts having a thickness of about 0.060 inch used for casting sheet materials such as acrylic plastic sheet are refurbished by first grinding the back surface of the belt until no further distortions can be removed and then grinding the mirrored surface of the belt until said mirrored surface is uniformly dull and thereafter polishing the dulled surface to a mirrored finish. During the grinding and polishing, the belt is cooled to avoid local overheating.
    Type: Grant
    Filed: November 22, 1978
    Date of Patent: March 10, 1981
    Assignee: Rohm and Haas Company
    Inventors: Walter H. Hunt, IV, Lynn W. Craig