Patents by Inventor Michael J. Danks

Michael J. Danks 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).

  • Protector device
    Patent number: 4964160
    Abstract: A Protector device 20 connectable between a subscribers line pair and the telephone exchange includes a protector P1 comprising a pair of foldback diodes and fuses F1 and F2 in series with the respective lines which fuses incorporate an impedence/heater element 25. A pair of contacts S1, S2 with meltable insulation provides a fail-safe short circuit path following continued operation of the protector P1. The device 20 will deal with accidental contact with mains voltages that appear on the lines and will also handle short surges due to lightning strikes for example.
    Type: Grant
    Filed: January 31, 1989
    Date of Patent: October 16, 1990
    Assignee: British Telecommunications public limited company
    Inventors: Roy F. Traube, Michael J. Danks