Patents by Inventor Jurgen Onasch

Jurgen Onasch 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).

  • Anchor
    Patent number: 4640654
    Abstract: An anchor for fastening in bore holes comprises an expander body driven into an expansion sleeve, having a slotted expansible portion, by a stay bolt to which a torque is applied to draw the expander body into the expansion sleeve. The expander body has at its trailing end a conical portion which merges into a concavely-curved portion. The angle of the concavity of the curved portion at the leading end of the expander body corresponds to a double angle of inclination of the conical portion to the central axis of the anchor.
    Type: Grant
    Filed: June 3, 1985
    Date of Patent: February 3, 1987
    Assignee: Artur Fischer
    Inventors: Artur Fischer, Jurgen Onasch, Manfred Haage
  • Self-tapping screw
    Patent number: 4527932
    Abstract: For the purpose of assuring, during insertion in plastic, a highly stressable connection between screw and plastic with relatively small driving torques, a self-tapping screw is provided with a symmetrical thread profile whose thread angle (8) changes steadily from the crest (5) of the flank to the root (3) of the thread.
    Type: Grant
    Filed: March 3, 1983
    Date of Patent: July 9, 1985
    Assignee: Richard Bergner GmbH & Co.
    Inventors: Jurgen Onasch, Gottfried Ehrenstein