Patents Represented by Attorney C. M. Corin

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  • Volt-per-hertz protection apparatus
    Patent number: 4847723
    Abstract: An inverse-time timer for a volt/Hertz ratio relay includes a ladder of level detectors associated with a like series of counters connected in cascade with a variable voltage-to-frequency connector responsive to the v/Hz ratio signal for controlling the counters to establish the time delay for tripping.
    Type: Grant
    Filed: May 20, 1988
    Date of Patent: July 11, 1989
    Assignee: Westinghouse Electric Corp.
    Inventor: Donald S. Kimmel