Patents by Inventor John R. McNair

John R. McNair 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).

  • Single sheet feeding mechanism
    Patent number: 4564188
    Abstract: Single sheet feed reliability for suction cup mechanisms handling highly permeable paper sheet is improved with a quickly and conveniently attached rigid cup enclosure of an extensible bellows cup. An internal thread is provided in the suction pipe ends for receipt of an externally threaded T-nut shank. The T-nut secures both, the rigid cup enclosure and the extensible bellows.
    Type: Grant
    Filed: November 13, 1984
    Date of Patent: January 14, 1986
    Assignee: Westvaco Corporation
    Inventor: John R. McNair