Patents Represented by Attorney, Agent or Law Firm Keith Newbury, Esq.
  • Solenoid motion detection circuit
    Patent number: 6211665
    Abstract: A circuit arrangement is described which detects when the moving member of an electromagnetic device is in motion by detecting coincidence of energization of the device coil and a negative first differential of the current/time waveform and a positive first differential of the voltage/time waveform through said coil.
    Type: Grant
    Filed: April 13, 1999
    Date of Patent: April 3, 2001
    Assignee: AlliedSignal Inc.
    Inventors: Terry J. Ahrendt, Stephen G. Abel