Patents by Inventor Oscar L. Yeager

Oscar L. Yeager 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).

  • Process and assembly for sealing an opening of a press
    Patent number: 4396451
    Abstract: A sealing assembly for use in a press having one or several openings defined by a number of platens, consisting of a plate to which an inflatable, flexible seal with a protective retainer is attached and is installed in the space in each opening by suspending it to the bottom side of each platen. After closing of the press, positive air pressure is delivered into the sealing element to gradually inflate the sealing element causing a tight sealing of the space between the platens irrespective of the irregularities existing in the contact surface of the sealing element. A vacuum can be applied to remove any contaminants and/or gasses trapped in the space enclosed by the sealing assembly.
    Type: Grant
    Filed: December 9, 1981
    Date of Patent: August 2, 1983
    Assignee: Wean United, Inc.
    Inventor: Oscar L. Yeager