Patent US3253276A successfully refreshed from Google Patents.
US3253276A
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US
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Signal lantern lens
Assignee: Elastic Stop Nut Corp
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Filing: 1963-12-19
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Granted: 1966-05-24
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Expires: 1983-12-19
Abstract
No abstract record available.
Inventors
- 👤 Robert I Nagel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:28
CPC Classifications
F; F21; F21V; F21V13/00; F21V13/02; F21V13/04; B; B64; B64F; B64F1/00; B64F1/18; B64F1/20; F21V5/00; F21V5/02; F21V7/00; F21W; F21W2111/00; F21W2111/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A SUPPLEMENTARY LENS FOR USE IN A LANTERN WHICH PROJECTS A VISIBLE SIGNAL INTO A PREDETERMINED AREA, THE LANTERN INCLUDING A POINT SOURCE OF LIGHT AND AN OPENENDED, VERTICALLY EXTENDING DRUM-SHAPED LENS HAVING LENS ELEMENTS FOR INTERCEPTING A PORTION OF THE LIGHT EMANATING FROM THE SOURCE AND PROJECTING SAID PORTION INTO A FIRST HORIZONTALLY BEAMED SIGNAL, AND SUPPLEMENTARY LENS BEING ADJACENT THE OPEN END OF THE DRUM-SHAPED LENS FOR INTERCEPTING A FURTHER PORTION OF THE LIGHT EMANATING FROM THE SOURCE AND PASSING THROUGH THE OPEN END TO PROJECT SAID FURTHER PORTION INTO A SECOND HORIZONTALLY BEAMED SIGNAL, SAID SUPPLEMENTARY LENS HAVING A PLURALITY OF CATADIOPTRIC
Claim 2
Dependent Claim
105 words
A SUPPLEMENTARY LENS FOR USE IN A LANTERN WHICH PROJECTS A VISIBLE SIGNAL INTO A PREDETERMINED AREA, THE LANTERN INCLUDING A POINT SOURCE OF LIGHT AND AN OPENENDED, VERTICALLY EXTENDING DRUM-SHAPED LENS HAVING LENS ELEMENTS FOR INTERCEPTING A PORTION OF THE LIGHT EMANATING FROM THE SOURCE AND PROJECTING SAID PORTION INTO A FIRST HORIZONTALLY BEAMED SIGNAL, AND SUPPLEMENTARY LENS BEING ADJACENT THE OPEN END OF THE DRUM-SHAPED LENS FOR INTERCEPTING A FURTHER PORTION OF THE LIGHT EMANATING FROM THE SOURCE AND PASSING THROUGH THE OPEN END TO PROJECT SAID FURTHER PORTION INTO A SECOND HORIZONTALLY BEAMED SIGNAL, SAID SUPPLEMENTARY LENS HAVING A PLURALITY OF CATADIOPTRIC
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) | 1969-05-23 | 1969-11-22 | 1970-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-23 | 1973-11-22 | 1974-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-23 | 1977-11-22 | 1978-05-24 | $7700.00 | Window Closed / Lapsed |