Patents by Inventor Frederick L. Duckett

Frederick L. Duckett 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).

  • Container-handling spreader beam or the like
    Patent number: 4219228
    Abstract: A container-handling spreader beam for use both with "Sealand" and I.S.O. containers which have differently spaced transversely disposed pairs of corner castings. The spreader beam has pairs of twistlock assemblies and each twistlock assembly is resiliently held on the spreader beam frame structure so that it is transversely movable on the frame structure to cater for the differently spaced corner castings of the two types of container.
    Type: Grant
    Filed: February 15, 1979
    Date of Patent: August 26, 1980
    Assignee: Stothert & Pitt Limited
    Inventor: Frederick L. Duckett