Patents by Inventor Zbigniew Oleszek

Zbigniew Oleszek 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).

  • Security nut, bolt and screw
    Patent number: 7051624
    Abstract: A security screw fastener, e.g. a nut or bolt having a head (3) around which is a curved exterior surface (5) which is at least partially conical or dome-shaped on which several left-handed and right-handed grooves (12, 13) are formed which are designed to receive a projection (31) from an interior surface (30) of a co-operating tool (20).
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: May 30, 2006
    Inventor: Zbigniew Oleszek
  • Security nut, bolt and screw
    Publication number: 20050002756
    Abstract: A security screw fastener, e.g. a nut or bolt having a head (3) around which is a curved exterior surface (5) which is at least partially conical or dome-shaped on which several left-handed and right-handed grooves (12, 13) are formed which are designed to receive a projection (31) from an interior surface (30) of a co-operating tool (20).
    Type: Application
    Filed: June 9, 2004
    Publication date: January 6, 2005
    Inventor: Zbigniew Oleszek