Variable color illuminator

• US 3,143,300 A
• Filed: 03/04/1963
• Issued: 08/04/1964
• Est. Priority Date: 03/04/1963
• Status: Expired due to Term

• Current Assignee: Frederick L. Way
• Original Assignee: Frederick L. Way
• Inventors: Way, Frederick L.
• Application Number:
  US04/263,378
• Time in Patent Office: 519 Days
• US Class Current: 362/231
• CPC Class Codes: F21V 9/40 with provision for controlling spectral properties, e.g. colour, or intensity
• CPC Class Codes: F21W 2131/406 for theatres, stages or film studios
• CPC Class Codes: G09F 13/00 Illuminated signs; Luminous advertising G09F9/00, G09F11/00 take precedence; control of displays in general using static means to present variable information G09G

Claims

1. A VARIABLE COLOR ILLUMINATOR COMPRISING A PLURALITY OF DIFFERENT COLORED ELECTRIC LIGHT SOURCES, RESISTANCE MEANS CONNECTED IN SERIES WITH EACH LIGHT SOURCE, EACH OF SAID RESISTANCE MEANS COMPRISING A PLURALITY OF HEAT PRODUCING RESISTANCE ELEMENTS, AND A PLURALITY OF NORMALLY OPEN THERMAL SWITCH MEANS EACH DISPOSED IN CLOSE PROXIMITY TO AND CONNECTED ACROSS A CORRESPONDING RESISTANCE ELEMENT, EACH OF SAID SWITCH MEANS HAVING A THERMAL RESPONSE CHARACTERISTIC IN CONJUNCTION WITH THE HEAT GENERATED BY THE CORRESPONDING RESISTANCE ELEMENT WHICH DIFFERS FROM THE THERMAL RESPONSE CHARACTERISTIC OF THE OTHER SWITCH MEANS ASSOCIATED WITH THE SAME RESISTANCE MEANS SO THAT SAID SWITCH MEANS WILL CLOSE AT RANDOM TIME INTERVALS IN DIRECT RESPONSE TO HEAT GENERATED BY THE ELEMENT.