Patents by Inventor Frank Wack

Frank Wack 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: 3974928
    Abstract: An improved child resistant safety closure and container assembly of the type including a cap having an end wall with a skirt projecting therefrom and bayonet locking means projecting from the inner wall of the skirt for engagement with complementary bayonet locking means on the container by combined axial and rotary motion of the cap relative to the container. A combined spring and sealing member is carried by the cap, which, when the cap is applied to the container, resiliently maintains the cap and container in locked engagement, and also provides a moisture proof seal for the contents of the container. The spring and sealing member comprises a one-piece plastic body having a sealing portion and a biasing portion, the sealing portion including a radially projecting, annular sealing flange for overlying the rim of the container, and an axially extending sealing flange for engaging the inner surface of the mouth of the container.
    Type: Grant
    Filed: May 7, 1975
    Date of Patent: August 17, 1976
    Assignee: International Tools (1973) Ltd.
    Inventors: John F. Domaracki, Leonard M. McBride, Frank Wack