Patents Represented by Attorney, Agent or Law Firm Wm. T. Klett, III
  • Patent number: 6617840
    Abstract: A wireless phasing voltmeter having a high impedance AC voltmeter in series with two high impedance probes. Shielding surrounds and electrically isolates the voltmeter and probes which communicate via wireless, FM transmission, thus eliminating the cable customarily used to connect the probes. The signal transmitted may be analog or digital. The transmitter and receiver may be plugged into the same jacks on the probe that were used for the cable. In parallel with the voltmeter and connected electrically with the shielding is an electrical circuit designed to add the capacitive current to a current detected by the probes in such a way that the net effect on the measured current is zero.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: September 9, 2003
    Inventor: Walter S Bierer