Patents by Inventor Douglas Mervyn Wigfall

Douglas Mervyn Wigfall 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).

  • Hinges
    Patent number: 3965532
    Abstract: A hinge for pivotally connecting two components, the hinge being in the form of two pivotally inter-connected leaves and a casing, one leaf being arranged to be secured to one component and the casing being arranged to be secured to the other component. The casing provides a socket having opposed walls between which the other leaf can slide, one of the walls of the casing and the other leaf having complementary formations which interengage with a snap action to hold the other leaf in the socket and the one wall of the casing being arranged to lie between the other leaf and the other component when the hinge is in use.
    Type: Grant
    Filed: July 23, 1975
    Date of Patent: June 29, 1976
    Assignee: Crompton, Nettlefold Stenman Limited
    Inventor: Douglas Mervyn Wigfall