Patent US4751893A successfully refreshed from Google Patents.
US4751893A
Expired / Lapsed
US
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Anti-glare screen
Assignee: Individual
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Filing: 1987-03-20
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Granted: 1988-06-21
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Expires: 2007-03-20
Abstract
Abstract An anti-glare screen adapted to be mounted to concrete median barriers so as to block light from the headlights of oncoming vehicles on the opposite side of the glare screen. The anti-glare screen comprises a plurality of corrugated sections overlapped to form a continuous barrier yet flexible enough to conform to bends in a roadway.
Inventors
- 👤 William S. Brantley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:04
CPC Classifications
E; E01; E01F; E01F7/00; E01F7/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
176 words
An anti-glare screen for use in connection with a roadway median barier of the type including a relatively wide base portion and a narrower top portion, the anti-glare screen comprising: (a) a plurality of generally U-shaped, flexible screen sections mounted on the top portion of the median barrier; (b) each said screen section comprising: (1) a pair of parallel spaced-apart walls extending upwardly from the top portion of the median barrier to a height sufficient to block light from oncoming vehicles; (2) a connecting portion disposed substantially above the top portion of the median barrier for joining uppermost portions of the spaced-apart walls to form an inverted, U-shaped section; (3) a series of vertically oriented corrugations for reinforcing the screen sections against lateral forces, each said corrugation beginning at the lowermost portion of one spaced-apart wall and extending over the connecting portion and terminating at the lowermost portion of the other spaced-apart wall; and (c) means for joining the screen section in end-to-end relationship to form a continuous, uninterrupted screen for blocking light of oncomining vehicles.
Claim 2
Dependent Claim
176 words
An anti-glare screen for use in connection with a roadway median barier of the type including a relatively wide base portion and a narrower top portion, the anti-glare screen comprising: (a) a plurality of generally U-shaped, flexible screen sections mounted on the top portion of the median barrier; (b) each said screen section comprising: (1) a pair of parallel spaced-apart walls extending upwardly from the top portion of the median barrier to a height sufficient to block light from oncoming vehicles; (2) a connecting portion disposed substantially above the top portion of the median barrier for joining uppermost portions of the spaced-apart walls to form an inverted, U-shaped section; (3) a series of vertically oriented corrugations for reinforcing the screen sections against lateral forces, each said corrugation beginning at the lowermost portion of one spaced-apart wall and extending over the connecting portion and terminating at the lowermost portion of the other spaced-apart wall; and (c) means for joining the screen section in end-to-end relationship to form a continuous, uninterrupted screen for blocking light of oncomining vehicles.
Claim 3
Dependent Claim
49 words
The anti-glare screen of claim 1 wherein said joining means includes a first corrugation adjacent one end of said screen section and a second corrugation formed adjacent the opposite end of said screen section capable of being slideably received in a first corrugation of a similarly formed screen section.
Claim 4
Dependent Claim
37 words
The anti-glare screen of claim 2 wherein the corrugations of the screen sections have a substantially rectilinear configuration so that the variously disposed surfaces of the corrugation tend to reflect light in different directions thereby reducing glare.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1991-06-21 | 1991-12-21 | 1992-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-21 | 1995-12-21 | 1996-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-21 | 1999-12-21 | 2000-06-21 | $7700.00 | Window Closed / Lapsed |