US3423148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Natural light regenerating glare-shields
Assignee: FRANCOIS M REBOUL
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Filing: 1966-08-11
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Granted: 1969-01-21
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Expires: 1986-08-11
Abstract
No abstract record available.
Inventors
- 👤 Francois M Reboul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:22
CPC Classifications
E; E21; E21D; E21D9/00; E21D9/14; F; F21; F21S; F21S11/00; F21V; F21V11/00; F21V11/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
GLARE-SHIELD FOR CREATING AT THE ENTRANCE OF DARK AND ARTIFICIALLY ILLUMINATED PASSAGEWAYS OPEN TO AUTOMOTIVE CIRCULATION A TRANSITION ZONE ILLUMINATED BY DIFFUSE REFFECTION OF THE NATURAL LIGHT, COMPRISING AT LEAST A HORIZONTAL SYSTEM OF PARALLEL BLADES ENSURING A PERMANENT OCCULTATION OF THE RAYS OF THE SUN OVER THE ENTIRE RANGE OF SAID ZONE, EACH OF SAID BLADES EXHIBITING A PLURALITY OF PLANE SURFACEW WITH DIFFERENT INCLINATIONS, AND SAID PLURALITY OF PLANE SURFACES COMPRISING AT LEAST ONE SEMIREFLECTING SURFACE, ONE DIFFUSING SURFACE AND ONE ABSORBING SURFACE WHEREBY SAID SYSTEM OF PARALLEL BLADES PROJECTS TOWARDS THE ROADWAY IN PREFERENTIAL DIRECTIONS OF HIGH SIGHTS, A PROPORTION OF THE INCIDENT LIGHT WHICH IS GREATER AS THE HEIGHT OF THE SUN IS LOWER.
Claim 2
Dependent Claim
118 words
GLARE-SHIELD FOR CREATING AT THE ENTRANCE OF DARK AND ARTIFICIALLY ILLUMINATED PASSAGEWAYS OPEN TO AUTOMOTIVE CIRCULATION A TRANSITION ZONE ILLUMINATED BY DIFFUSE REFFECTION OF THE NATURAL LIGHT, COMPRISING AT LEAST A HORIZONTAL SYSTEM OF PARALLEL BLADES ENSURING A PERMANENT OCCULTATION OF THE RAYS OF THE SUN OVER THE ENTIRE RANGE OF SAID ZONE, EACH OF SAID BLADES EXHIBITING A PLURALITY OF PLANE SURFACEW WITH DIFFERENT INCLINATIONS, AND SAID PLURALITY OF PLANE SURFACES COMPRISING AT LEAST ONE SEMIREFLECTING SURFACE, ONE DIFFUSING SURFACE AND ONE ABSORBING SURFACE WHEREBY SAID SYSTEM OF PARALLEL BLADES PROJECTS TOWARDS THE ROADWAY IN PREFERENTIAL DIRECTIONS OF HIGH SIGHTS, A PROPORTION OF THE INCIDENT LIGHT WHICH IS GREATER AS THE HEIGHT OF THE SUN IS LOWER.
References Cited (Backward Citations)
US289537A
Cited
US583580A
Cited
US586223A
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US586251A
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US721258A
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US1652347A
Cited
FR1354676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |