×

Wall box dimmer switch with plural remote control switches

  • US 4,563,592 A
  • Filed: 10/13/1983
  • Issued: 01/07/1986
  • Est. Priority Date: 10/13/1983
  • Status: Expired
First Claim
Patent Images

1. A dimmer switch comprising:

  • first and second power leads connectable in series with a source of power and a load;

    a controllably conductive device having first and second main electrodes connected between said first and second power leads and further having a control electrode;

    control circuit means connected between at least one of said first and second main electrodes and said control electrode for applying a control signal having a maximum voltage substantially lower than the voltage of said source to said conrol electrode to cause said controllably conductive device to become conductive, and variable control means, connected to said control circuit means to variably apply said control signal to said control electrode;

    said variable control means including a movable adjustment member which is incrementally movable between a minimum and maximum setting to determine the magnitude of said control signal;

    first disconnect switch means locally operable between an engaged and a disengaged position, said first switch means connected in a series circuit which includes at least said controllably conductive device, said first switch means and said power leads, whereby opening said first switch means opens the electrical circuit between said conductive device and at least one of said power leads; and

    second disconnect switch means operable between an engaged and disengaged position and an operating mechanism therefor, said second switch means connected in said control circuit means and being connected between said at least one of said first and second main electrodes and said control electrode, said variable control means being independent of said first and second disconnect switch means whereby dimming settings associated with said variable control means are unaffected by changing the condition of said first and second switches and whereby operation of said second switch means to one of its said positions prevents application of said control signal to said control electrode and renders said controllably conductive device nonconductive.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×