Patents by Inventor Arthur W. Virta

Arthur W. Virta 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).

  • Patent number: 4608038
    Abstract: An apparatus and method are disclosed for serially and automatically folding and gluing container body blanks, with optional lamination of a liner to the body blank prior to folding and gluing thereof. The apparatus includes a blank conveyor arrangement which intermittently advances a body blank along a horizontal straight-line work path through the apparatus. Arrangements are provided for applying adhesive to a flap portion of the body blank, folding the body blank about spaced parallel score lines thereof, and applying pressure to the blank to form a so-called manufacturer's joint at the flap portion. The present apparatus further includes an arrangement for advancing an inner liner into the apparatus in a direction transverse of the body blank work path, with an arrangement provided for maintaining the liner in a horizontally fixed stopped position above the blank work path, and for subsequently lowering the liner into superposition on a container body blank prior to folding and gluing of the blank.
    Type: Grant
    Filed: October 30, 1984
    Date of Patent: August 26, 1986
    Assignee: A. W. Virta & Associates, Inc.
    Inventors: Arthur W. Virta, Fred E. Ullman
  • Patent number: 4563169
    Abstract: A method and apparatus for folding a flat container blank about parallel score lines to bring a glue flap on the blank into juxtaposed relationship with respect to a side panel of the blank. Gripping mechanisms are associated with an intermittently operated conveyor means for pulling a blank past a glue applying station, into the folding station, and into a compressing station where the manufacturers' joint is set. Release means is provided for opening the gripping mechanisms downstream of the compressing station, and a following set of gripper mechanisms push the freed blank from the machine. Further conveyor means may be associated with the apparatus for feeding a liner to the blank to produce a laminated folded and glued blank.
    Type: Grant
    Filed: June 1, 1982
    Date of Patent: January 7, 1986
    Inventors: Arthur W. Virta, John R. Lane