Patents Represented by Law Firm Frahwitter Patent- und Rechtsanwolte
  • Countersunk head screw
    Patent number: 5772376
    Abstract: The invention relates to a countersunk head screw with an even number of ribs with countersinking blades on the underside of the screw head and projecting therefrom. Every other rib has a step at its end towards the screw shaft formed by shortening the rib concerned in relation to each adjacent rib.
    Type: Grant
    Filed: May 15, 1997
    Date of Patent: June 30, 1998
    Assignee: Ejot Verbindungstechnik GmbH & Co. KG
    Inventor: Gottfried Konig