Patents Represented by Law Firm Lockwook, Alex, FitzGibbon & Cummings
  • Patent number: 5274324
    Abstract: A hot line indicator for instantaneously indicating the presence of voltage on an electrical conductor in an AC power distribution system includes a unitary one-piece housing having a projecting metallic probe and a hookeye for engaging a conventional lineman's hot stick. Within the housing, the display electrodes of a high impedance liquid crystal display component are coupled to the monitored conductor through the probe and a capacitive coupling to ground to provide an unambiguous "HL" display indicative of the presence of voltage on the conductor.
    Type: Grant
    Filed: January 16, 1991
    Date of Patent: December 28, 1993
    Inventor: Edmund O. Schweitzer, Jr.