Patents by Inventor David Joseph Clark

David Joseph Clark 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).

  • Assembly for filling canisters
    Patent number: 6250516
    Abstract: A device for controlling fluid or liquid flow which comprises: a.) a metallic fill tube which is tapered at one end and has an opening at said end and has an internal profile and an outer profile; b.) a metallic tip and elastomeric assembly within said metallic fill tube; and which forms a seal with the internal profile of said fill tube upon contact with said internal profile; c.) a nozzle which at one end is attached to said metallic tip; and wherein the opening of said metallic fill tube has approximately the same radius as the metallic tip and elastomeric assembly, is described.
    Type: Grant
    Filed: April 5, 1999
    Date of Patent: June 26, 2001
    Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.
    Inventors: Edward Ross Story, David Joseph Clark