Patents by Inventor Charles Norman Tebbutt

Charles Norman Tebbutt 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).

  • Tamper proof seal for a closure
    Patent number: 4087018
    Abstract: A lever lid and ring assembly, for a container body, has a tamper indicating sealing member which bridges the joint between the lid and ring. Various shapes of sealing member are described which are cut from aluminium foil coated with a hot melt adhesive. The seals are adhered to an external surface of the ring, and if the shape requires it, they are also sealed to the lid. In an alternative embodiment the sealing member is an annulus of plastics material extruded to seal the joint between the lid and ring.
    Type: Grant
    Filed: April 4, 1977
    Date of Patent: May 2, 1978
    Assignee: Metal Box Limited
    Inventor: Charles Norman Tebbutt