Patents by Inventor David John Hoffmann

David John Hoffmann 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: 5704500
    Abstract: A dispensing-sealing arrangement (10) is disclosed for a container (12) comprising a resiliently deformable dispensing apparatus typically in the form of a teat (14) connected about opening (16) of the container (12). The teat (14) is provided with an outlet (18) for dispensing matter contained in the container (12). Cap (20) is provided with a skirt (22) for insertion into the opening (16) for sealing the container (12). Sealing is achieved by the skirt (22) deforming the teat (14) in the manner so that a first portion (24) of the teat is sandwiched between the opening (16) and the skirt (22). The skirt (22) is configured so that sufficient pressure is applied to the teat (14) to ensure positive sealing between the teat and the first skirt (22). The skirt (22) is located in board of the periphery of, and depends from, upper wall (26) of cap (20).
    Type: Grant
    Filed: May 16, 1996
    Date of Patent: January 6, 1998
    Inventors: David John Hoffmann, Robert Anthony James Hunter