Patents by Inventor Thallam Subbarao

Thallam Subbarao 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).

  • Gapless discharge counter for lightning arresters
    Patent number: 4338648
    Abstract: A discharge counter and arrester current meter employs a zinc oxide disk in combination with a pair of bridge rectifiers to accurately determine surge arrester steady state current and to count the number of discharges occurring through a voltage surge arrester. The discharge counter and meter circuit, connected between the surge arrester and ground, monitors the steady state current by means of an ammeter and records the number of discharges by means of a capacitor, cyclometer coil, and a recorder. The meter circuit and the discharge counter are uniquely protected by a single zinc oxide disk during the discharge of high current surges.
    Type: Grant
    Filed: November 10, 1980
    Date of Patent: July 6, 1982
    Assignee: General Electric Company
    Inventor: Thallam Subbarao