US4088415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glare screen blade
Assignee: SYRO STEEL Co
•
Filing: 1977-08-31
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Granted: 1978-05-09
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Expires: 1997-08-31
Abstract
Abstract A hollow, vertically standing blade having a width substantially greater than its thickness is provided with raised chevron-like configurations on its wider surfaces to deflect light directed thereagainst. A plurality of such blades mounted in spaced relation in a row on a support in the mediun strip of a highway block light from the headlights of vehicles traveling in one direction with respect to vehicles traveling in the opposite direction.
Inventors
- 👤 Charles W. Syak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:09
CPC Classifications
E; E01; E01F; E01F7/00; E01F7/06; E01F9/00; E01F9/60; E01F9/604; E01F9/619
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
94 words
A glare shield blade, a plurality of which may be used to block headlight glare from one lane of a divided highway to the other, said blade comprising a vertically standing elongated member having a width greater than its thickness and similarly formed front and back surfaces, a plurality of ribs formed on at least one of said front and back surfaces, each of said ribs having at least one surface disposed at an angle to the surface on which it is formed and acting to deflect light at an angle to its source.
Claim 2
Dependent Claim
94 words
A glare shield blade, a plurality of which may be used to block headlight glare from one lane of a divided highway to the other, said blade comprising a vertically standing elongated member having a width greater than its thickness and similarly formed front and back surfaces, a plurality of ribs formed on at least one of said front and back surfaces, each of said ribs having at least one surface disposed at an angle to the surface on which it is formed and acting to deflect light at an angle to its source.
Claim 3
Dependent Claim
19 words
The glare shield blade set forth in claim 1 and wherein said ribs are integrally formed in said blade.
Claim 4
Dependent Claim
34 words
The glare screen blade set forth in claim 1 and wherein said blade is a hollow blow molded plastic article and the ribs are integrally formed therewith and the exterior surfaces thereof are smooth.
Claim 5
Dependent Claim
28 words
The glare screen blade set forth in claim 1 and wherein said ribs have a surface parallel with the surface of the blade on which they are formed.
Claim 6
Dependent Claim
44 words
The glare screen blade set forth in claim 1 wherein the ribs have a surface parallel with the surface of the blade on which they are formed and wherein a light reflecting substance is positioned on said parallel surface of each of said ribs.
Claim 7
Dependent Claim
45 words
The glare screen blade set forth in claim 1 and wherein the ribs have a surface parallel with the surface of the blade on which they are formed and wherein a light absorbing substance is positioned on said parallel surface of each of said ribs.
Claim 8
Dependent Claim
43 words
The glare screen blade set forth in claim 1 and wherein each of said ribs has a surface formed at an angle to the plane of the surface on which they are formed and a surface offset with respect thereto and parallel therewith.
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) | 1981-05-08 | 1981-11-07 | 1982-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-08 | 1985-11-07 | 1986-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-08 | 1989-11-07 | 1990-05-09 | $7700.00 | Window Closed / Lapsed |