Patents by Inventor Franz Zberg

Franz Zberg 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 screw cap
    Patent number: 4011960
    Abstract: A security screw cap has a closed internally screw-threaded inner cap or sleeve clipped in an outer actuating sleeve which has two axial position, a pulled-out security position in which it rotates freely and a pushed-in actuating position in which a keyhole-shaped profile on top of the inner sleeve engages in a keyhole-shaped opening in the top of the outer sleeve.
    Type: Grant
    Filed: April 30, 1976
    Date of Patent: March 15, 1977
    Assignee: S.A.S. Trading S.A.
    Inventors: Yves Mauvernay, Franz Zberg