Patents by Inventor William Ferdinand Bowin

William Ferdinand Bowin 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).

  • Patent number: 4058685
    Abstract: An arrangement for preventing false reseizures of loop-signaling, repeat coil-coupled interoffice trunk circuits for telephone switching systems is disclosed. In the prior art, false reseizures of an incoming trunk circuit can be caused by discharge of the midpoint capacitor at the facility side of the repeat coil bridge of an associated outgoing trunk circuit at the opposite terminus of the interoffice trunk facility. During the talk state, this midpoint capacitor is charged approximately to the signaling battery supply level with polarity such that, upon termination of the talk state and accompanying tip-ring reversal, the capacitive discharge is sufficient to re-operate the supervisory relay in the distant office incoming trunk circuit, thereby generating a false reseizure attempt.
    Type: Grant
    Filed: November 19, 1976
    Date of Patent: November 15, 1977
    Assignee: North Electric Company
    Inventor: William Ferdinand Bowin