Patents by Inventor David Ascroft

David Ascroft 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).

  • Current transformer assemblies
    Patent number: 5835000
    Abstract: A current transformer assembly has three pairs of contacts projecting from the upper and lower surface of a mounting plate. Below the plate, the contacts in each pair are interconnected by a conductor embraced by a toroidal current transformer. The transformers are electrically connected to a connector accessible on the upper surface of the plate. Four mounting bolts project from the upper surface of the plate so that the assembly can be connected to cooperating contacts on an equipment panel. The lower surface of the plate is enclosed by a housing.
    Type: Grant
    Filed: May 27, 1997
    Date of Patent: November 10, 1998
    Assignee: Smiths Industries plc
    Inventors: David Ascroft, David Ian Colguhoun