Patents by Inventor John R. Perulfi

John R. Perulfi 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).

  • Multiple vacuum interrupter fluid insulated circuit breaker with isolation gap
    Patent number: 4972055
    Abstract: A circuit breaker utilizes a plurality of vacuum interrupters immersed in oil. A cross-bar with electrically conductive sections completes a series electrical circuit through the circuit breaker and actuates operating mechanisms, to close the contacts of the vacuum interrupters when in the raised position as the cross-bar is lowered, the contacts of the vacuum interrupters are opened by impact forces before isolation gaps which fill with oil are created in the series electrical circuit. Various arrangements of the vacuum interrupters are disclosed for uprating existing oil circuit breakers.
    Type: Grant
    Filed: December 29, 1989
    Date of Patent: November 20, 1990
    Assignee: ABB Power T&D Company Inc.
    Inventors: John R. Perulfi, Joseph R. Rostron
  • Current transformer
    Patent number: 4510477
    Abstract: A current transformer characterized by a terminal bushing extending from a tank with a pair of spaced conductors extending through the bushing and into the tank and with the portions of the conductors in the tank being enclosed within tubular means. The assembly of the conductors, bushing, and tubular means being clamped together by resilient (spring) means for holding the conductors in tension and the bushing and tubular means in compression. The transformer also embodies two separate oil systems.
    Type: Grant
    Filed: October 19, 1983
    Date of Patent: April 9, 1985
    Assignee: Westinghouse Electric Corp.
    Inventors: Joseph R. Rostron, John R. Perulfi
  • High-voltage puffer-type compressed-gas circuit-interrupter assemblage
    Patent number: 4293747
    Abstract: A generally cross-shaped, or "T"-shaped circuit-interrupter assemblage is provided having three outwardly radiating supporting arms, or members, within each of which is disposed a puffer-type compressed-gas circuit-interrupting unit. Common contact-operating means are provided at the common point of intersection of the three arms, or legs, so that simultaneous operation of the three puffer-type interrupters is accomplished. The electrical circuit passes serially through each of the three puffer-interrupting structures to thereby provide a high-voltage circuit-interrupter adaptable for voltages of the order of 345 KV, for example.An additional feature of the present invention is the provision of a common rotatable operating disc having pivotally connected thereto, adjacent its outer periphery, floating-connecting link structure, each of the three floating links being pivotally connected to the respective movable contact-operating rod of each of the three puffer-type interrupting units.
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: October 6, 1981
    Assignee: Westinghouse Electric Corp.
    Inventor: John R. Perulfi