US3157089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for illuminating interior of underground shelters
Assignee: Individual
•
Filing: 1962-06-01
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Granted: 1964-11-17
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Expires: 1982-06-01
Abstract
No abstract record available.
Inventors
- 👤 Jerry B Menefee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:29
CPC Classifications
F; F21; F21S; F21S11/00; E; E04; E04D; E04D13/00; E04D13/03; E04D2013/034
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
IN AN ILLUMINATING DEVICE FOR UNDERGROUND STRUCTURES HAVING A ROOF BELOW THE GROUND SURFACE, IN COMBINATION, A TUBULAR HOUSING ARRANGED THROUGH THE SAID ROOF AND EXTENDING ABOVE THE GROUND SURFACE, A SPRING BIASED CAP HINGED TO THE TOP OF SAID HOUSING FOR NORMALLY CLOSING THE SAME, A RETRACTABLE GLASS SHAFT FORMED WITH BULBOUS LIGHT REFRACTING ELEMENTS ON EACH END, THE SAID SHAFT HAVING A LIGHT REFLECTING COATING COEXTENSIVE THEREWITH BETWEEN SAID LIGHT REFRACTING ELEMENTS, SPRING TENSIONED MEANS ON SAID SHAFT FOR SUPPORTING THE SAME VERTICALLY CONCENTRICALLY OF SAID HOUSING WHEREBY SAID SHAFT CAN BE RAISED AND LOWERED IN SAID HOUSING TO EXPOSE THE LIGHT REFRACTING ELEMENT ON THE UPPER END THEREOF TO SUNLIGHT WHILE HOLDING THE CAP IN OPEN POSITION AGAINST THE TEN-
Claim 2
Dependent Claim
123 words
IN AN ILLUMINATING DEVICE FOR UNDERGROUND STRUCTURES HAVING A ROOF BELOW THE GROUND SURFACE, IN COMBINATION, A TUBULAR HOUSING ARRANGED THROUGH THE SAID ROOF AND EXTENDING ABOVE THE GROUND SURFACE, A SPRING BIASED CAP HINGED TO THE TOP OF SAID HOUSING FOR NORMALLY CLOSING THE SAME, A RETRACTABLE GLASS SHAFT FORMED WITH BULBOUS LIGHT REFRACTING ELEMENTS ON EACH END, THE SAID SHAFT HAVING A LIGHT REFLECTING COATING COEXTENSIVE THEREWITH BETWEEN SAID LIGHT REFRACTING ELEMENTS, SPRING TENSIONED MEANS ON SAID SHAFT FOR SUPPORTING THE SAME VERTICALLY CONCENTRICALLY OF SAID HOUSING WHEREBY SAID SHAFT CAN BE RAISED AND LOWERED IN SAID HOUSING TO EXPOSE THE LIGHT REFRACTING ELEMENT ON THE UPPER END THEREOF TO SUNLIGHT WHILE HOLDING THE CAP IN OPEN POSITION AGAINST THE TEN-
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) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |