Patent US3143300A successfully refreshed from Google Patents.
US3143300A
Expired / Lapsed
US
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Variable color illuminator
Assignee: Mobilcolor Inc
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Filing: 1963-03-04
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Granted: 1964-08-04
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Expires: 1983-03-04
Abstract
No abstract record available.
Inventors
- 👤 Frederick L Way
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:30
CPC Classifications
G; G09; G09F; G09F13/00; F; F21; F21V; F21V9/00; F21V9/40; F21W; F21W2131/00; F21W2131/40; F21W2131/406
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
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.
Claim 2
Dependent Claim
116 words
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.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |