Patents by Inventor Daniel L. Wetherell

Daniel L. Wetherell 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).

  • Coupling arrangement for power line carrier systems
    Patent number: 4066912
    Abstract: First and second bands of separate frequencies are coupled through hybrid transformers and frequency isolation filters to each of three phase wires of a power transmission line. The hybrid transformers and filters are arranged so that both bands of frequencies are transmitted and received even though there is an open or short circuit on one of the feed lines or one of the phase wires, thus providing the reliability desired or needed, particularly when the frequency bands provide relaying functions.
    Type: Grant
    Filed: April 21, 1976
    Date of Patent: January 3, 1978
    Assignee: General Electric Company
    Inventor: Daniel L. Wetherell