Patent US4460161A successfully refreshed from Google Patents.
US4460161A
Expired / Lapsed
US
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Guard rail and reflective strip
Assignee: Individual
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Filing: 1983-03-02
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Granted: 1984-07-17
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Expires: 2003-03-02
Abstract
Abstract A guard rail and reflective strip is comprised of a modified guard rail having additional compound curved surfaces into which a reflective strip is secured. The reflective strip is preferably formed of an elastic material having a reflective surface backed with an adhesive layer. The strip conforms to the compound curves in the guard rail providing a parabolic reflective surface for the lights of an oncoming vehicle.
Inventors
- 👤 Joseph R. Grenga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:17
CPC Classifications
E; E01; E01F; E01F15/00; E01F15/02; E01F15/04; E01F15/0407; E01F15/0423; E01F9/00; E01F9/60; E01F9/658; E01F9/669
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
132 words
A guard rail and reflective strip for highway use in combination; a guard rail having a pair of longitudinally extending cross sectionally compound curved portions defining pairs of vertically spaced convex surfaces and at least one concave surface between said pairs of convex surfaces, said concave surface defines a generally parabolic surface, each of said pairs of vertically spaced convex surfaces defining a parabolic concave surface therebetween, a light reflecting strip comprising a base, a light reflecting material on one surface of said base, and an adhesive back on the other surface of said base, said base formed of a synthetic resin having an elastic quality, said flexible light reflective strip affixed continuously to said concave surfaces of said guard rail and means for securing said guard rail to a support means.
Claim 2
Dependent Claim
132 words
A guard rail and reflective strip for highway use in combination; a guard rail having a pair of longitudinally extending cross sectionally compound curved portions defining pairs of vertically spaced convex surfaces and at least one concave surface between said pairs of convex surfaces, said concave surface defines a generally parabolic surface, each of said pairs of vertically spaced convex surfaces defining a parabolic concave surface therebetween, a light reflecting strip comprising a base, a light reflecting material on one surface of said base, and an adhesive back on the other surface of said base, said base formed of a synthetic resin having an elastic quality, said flexible light reflective strip affixed continuously to said concave surfaces of said guard rail and means for securing said guard rail to a support means.
Claim 3
Dependent Claim
24 words
The guard rail and light reflecting strip of claim 1 wherein said reflecting strip conforms to the parabolic surface shape of said guard rail.
Claim 4
Dependent Claim
18 words
The guard rail and light reflecting strip of claim 1 wherein said light reflecting material includes glass beads.
Claim 5
Dependent Claim
28 words
The guard rail and light reflecting strip of claim 1 wherein said light reflecting strips are affixed continuously in said spaced parallel concave surfaces of said guard rail.
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) | 1987-07-17 | 1988-01-16 | 1988-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-17 | 1992-01-16 | 1992-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-17 | 1996-01-16 | 1996-07-17 | $7700.00 | Window Closed / Lapsed |