Patents by Inventor Donald S. McWilliam

Donald S. McWilliam 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).

  • End closure member for a container
    Patent number: 4576779
    Abstract: A closure in the form of a wedge-shaped member (3) to close the end of a container, such as a transport flask. The wedge-shaped member (3) carries a seal plate (7) which is urged by spring means (9) to project beyond the smaller end of the wedge-shaped member when the latter is in a position to open the end of the container. On advancing the wedge-shaped member (3) to close the end of the container the projecting end of the plate (7) first abuts against a stop (18) and continued advance of the wedge-shaped member relative to the seal plate (7) causes displacement of the seal plate towards the interior of the container to effect a seal at the end of the container.
    Type: Grant
    Filed: October 31, 1983
    Date of Patent: March 18, 1986
    Assignee: British Nuclear Fuels Limited
    Inventors: Donald S. McWilliam, David Minshall