Automatic headlamp switching system

  • US 5,420,480 A
  • Filed: 07/31/1992
  • Issued: 05/30/1995
  • Est. Priority Date: 07/31/1992
  • Status: Expired due to Term
First Claim
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1. An accessory unit for attachment to a vehicle of the type that has a primary light circuit including a primary light source, an energy source, a first switch means for connecting said energy source and said primary light source so that when said first switch means is activated said primary light source is selectively illuminated, said accessory unit comprising:

  • coupling means for selectively connecting and disconnecting said accessory unit to said vehicle;

    a secondary light circuit including a secondary light source on said accessory unit; and

    a second switch means connectable into said primary and secondary light circuits, said second switch means activated by said coupling means connecting said accessory unit to said vehicle and by said first switch means being activated for interrupting said primary light circuit and for simultaneously completing said secondary light circuit by connecting said energy source to said secondary light source so that said secondary light source is illuminated and said primary light source is de-illuminated.

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