Patents by Inventor Edward G. Bollin

Edward G. Bollin 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).

  • Mold apparatus and method for vacuum forming glass sheets
    Patent number: 5951733
    Abstract: Glass sheet forming apparatus (12) and a glass sheet forming method utilize a mold (20) having a curved forming face (22) with holes (26) in which a vacuum is drawn to form a glass sheet. A vacuum distributor (48) of the apparatus distributes a vacuum impulse of at least 0.1 atmospheres of vacuum from a valved vacuum reservoir (52) through a plurality of tubes (58) to a limited number of the holes (26) to provide additional forming of the glass sheet. The vacuum impulse distributor (48) is located within a vacuum chamber of the mold (20) that draws the vacuum by a gas jet pump in the holes (26) to which the vacuum impulse is not distributed.
    Type: Grant
    Filed: August 4, 1998
    Date of Patent: September 14, 1999
    Assignee: Glasstech, Inc.
    Inventors: Scott L. Clark, Thomas L. Shaw, Edward G. Bollin, David B. Nitschke