US3204093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Warning light reflector
Assignee: Elastic Stop Nut Corp
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Filing: 1963-04-04
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Granted: 1965-08-31
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Expires: 1983-04-04
Abstract
No abstract record available.
Inventors
- 👤 Sidney A Heenan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:21
CPC Classifications
F; F21; F21V; F21V13/00; F21V13/02; F21V13/04; F21W; F21W2111/00; F21W2111/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
216 words
A REFLECTOR FOR PROVIDING A MONO-DIRECTIONAL VISUAL SIGNAL IN A WARNING LIGHT ASSEMBLY, THE WARNING LIGHT ASSEMBLY HAVING A LENS FIXED THEREIN DIAMETRICALLY OPPOSED TO THE REFLECTOR FOR ACCEPTING LIGHT FROM A FOCAL POINT, AND A LAMP FIXED BETWEEN THE LENS AND THE REFLECTOR, THE FILAMENT OF THE LAMP BEING LOCATED AT A FIXED POINT COINCIDENT WITH THE FOCAL POINT OF THE LENS, SAID REFLECTOR COMPRISING: (A) A SEMI-SPHERICAL REFLECTING SURFACE HAVING A RELATIVELY SMALL RADIUS IN COMPARISON TO THE RADIUS OF THE LENS; AND (B) MEANS COOPERATING WITH SAID REFLECTING SURFACE AND HAVING A PORTION CORRESPONDING TOTHE DIAMETER OF THE LENS FOR FIXING SAID REFLECTOR IN THE ASSEMBLY AND LOCATING SAID REFLECTING SURFACE IN THE ASSEMBLY RELATIVE TO THE LAMP AND THE LENS WITH THE ORIGIN OF SAID RELATIVELY SMALL RADIUS DISPLACED A RELATIVELY SHORT DISTANCE FROM THE FIXED POINT, SAID SHORT DISTANCE BEING GREAT ENOUGH TO INDUCE A CONDITION WHICH PRECLUDES THE PROJECTION OF A SHADOW OF THE LAMP FILAMENT UPON THE LENS BY DEFEATING THE TENDENCY FOR ALL OF THE LIGHT EMANATING FROM THE FILAMENT AND REFLECTED BY SAID REFLECTING SURFACE TO BE CONCENTRATED AT THE FIXED POINT AND TO INTERCEPT THE FILAMENT, AND SMALL ENOUGH TO MAINTAIN THE OPTICAL ERROR ARISING FROM SUCH A CONDITION AT A MINIMUM COMPATIBLE WITH SAID CONDITION.
Claim 2
Dependent Claim
216 words
A REFLECTOR FOR PROVIDING A MONO-DIRECTIONAL VISUAL SIGNAL IN A WARNING LIGHT ASSEMBLY, THE WARNING LIGHT ASSEMBLY HAVING A LENS FIXED THEREIN DIAMETRICALLY OPPOSED TO THE REFLECTOR FOR ACCEPTING LIGHT FROM A FOCAL POINT, AND A LAMP FIXED BETWEEN THE LENS AND THE REFLECTOR, THE FILAMENT OF THE LAMP BEING LOCATED AT A FIXED POINT COINCIDENT WITH THE FOCAL POINT OF THE LENS, SAID REFLECTOR COMPRISING: (A) A SEMI-SPHERICAL REFLECTING SURFACE HAVING A RELATIVELY SMALL RADIUS IN COMPARISON TO THE RADIUS OF THE LENS; AND (B) MEANS COOPERATING WITH SAID REFLECTING SURFACE AND HAVING A PORTION CORRESPONDING TOTHE DIAMETER OF THE LENS FOR FIXING SAID REFLECTOR IN THE ASSEMBLY AND LOCATING SAID REFLECTING SURFACE IN THE ASSEMBLY RELATIVE TO THE LAMP AND THE LENS WITH THE ORIGIN OF SAID RELATIVELY SMALL RADIUS DISPLACED A RELATIVELY SHORT DISTANCE FROM THE FIXED POINT, SAID SHORT DISTANCE BEING GREAT ENOUGH TO INDUCE A CONDITION WHICH PRECLUDES THE PROJECTION OF A SHADOW OF THE LAMP FILAMENT UPON THE LENS BY DEFEATING THE TENDENCY FOR ALL OF THE LIGHT EMANATING FROM THE FILAMENT AND REFLECTED BY SAID REFLECTING SURFACE TO BE CONCENTRATED AT THE FIXED POINT AND TO INTERCEPT THE FILAMENT, AND SMALL ENOUGH TO MAINTAIN THE OPTICAL ERROR ARISING FROM SUCH A CONDITION AT A MINIMUM COMPATIBLE WITH SAID CONDITION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |