Patents by Inventor Heino Petersen

Heino Petersen 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: 4947744
    Abstract: A screen printing method wherein a flat article that is to be printed, printing material for example, is laid out on a printing table and secured if necessary by vacuum, a screen with a stencil that has printing ink on its upper surface is lowered with its lower surface against the article, a squeegee is scraped over the upper surface of the stencil to force ink through the screen and onto the article, the stencil is lifted, and the printed article is removed from the table. An ionizing electrode supplied with direct-current voltage is moved along with the squeegee.
    Type: Grant
    Filed: March 29, 1989
    Date of Patent: August 14, 1990
    Assignee: Eltex Elektrostatik GmbH
    Inventor: Heino Petersen
  • Patent number: 4893803
    Abstract: A method of folding a sheet, cut from at least one advancing web of material electrostatically bonded at least on one side and preferably consisting of paper or of a composite manufactured therefrom, transferred to a collecting cylinder, picked up in the vicinity of its midline by a folding cylinder that rests against the collecting cylinder in a nip along the midline of the sheet, and drawn completely over the folding cylinder while both halves of the sheet are folded together along the midline as the rotation continues, whereby the cylinders rotate in opposite directions and the web is charged at least outside the cylinders if necessary. An electrostatic field exerts a force of attraction in the nip (which is upstream in the direction that the two cylinders rotate in) on the top of the sheet (which is pulled off in a direction opposite the one that the collecting cylinder rotates in) toward a guide and the sheet is accordingly attracted and transferred to the folding cylinder.
    Type: Grant
    Filed: January 16, 1987
    Date of Patent: January 16, 1990
    Assignee: Eltex-Elektrostatik Gesellschaft mbH
    Inventor: Heino Petersen