Patent US4770495A successfully refreshed from Google Patents.
US4770495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temporary roadway barrier of contrasting panel portions with reflective ridges or beads at the panel junctions
Assignee: Glasdon Ltd
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Filing: 1986-02-24
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Granted: 1988-09-13
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Expires: 2006-02-24
Abstract
Abstract The disclosures relates to a barrier plank for a roadway having spaced triangular section ridges extending across the plank at spaced locations along the length of the plank. Each ridge provides a facet facing at an acute angle to the plank in one direction and a corresponding facet on the other side of the ridge facing at an acute angle along the plank in the opposite direction. Facets have red retro-reflective surfaces and facets have white retro-reflective surfaces. Thus light directed from a vehicle at a shallow angle onto the barrier plank will be reflected back by the facets according to the direction of approach so the plank will be readily visible to the driver. Between the ridges the plank has alternate red and white reflective surfaces to reflect back light directed at normal or near normal angles to the plank.
Inventors
- 👤 Anthony Lees
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:50
CPC Classifications
E; E01; E01F; E01F13/00; E01F13/02; E01F13/028
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
168 words
A barrier for a temporary free standing barrier system on a roadway or pavement, comprising: an elongate barrier member of rectangular form; coupling means, on said barrier member, for supporting said barrier member on a pair of independent free standing posts; the barrier member having one side face formed with panel portions spaced along the side face, said panel portions having alternate contrasting reflective colors with junctions between adjacent panel portions, whereby said side face is readily visible when illuminated by light from in front of the face; and triangular section ridges extending across said side face of the barrier member at the junctions between said contrasting reflective panel portions, each ridge having light retro-reflective facets on either side thereof facing in opposite directions at narrow angles to a lengthwise direction of the elongate barrier member respectively to retro-reflect light incident on the facets at narrow angles to the barrier member to render the barrier member readily visible when illuminated and viewed along or at narrow angles thereto.
Claim 2
Dependent Claim
168 words
A barrier for a temporary free standing barrier system on a roadway or pavement, comprising: an elongate barrier member of rectangular form; coupling means, on said barrier member, for supporting said barrier member on a pair of independent free standing posts; the barrier member having one side face formed with panel portions spaced along the side face, said panel portions having alternate contrasting reflective colors with junctions between adjacent panel portions, whereby said side face is readily visible when illuminated by light from in front of the face; and triangular section ridges extending across said side face of the barrier member at the junctions between said contrasting reflective panel portions, each ridge having light retro-reflective facets on either side thereof facing in opposite directions at narrow angles to a lengthwise direction of the elongate barrier member respectively to retro-reflect light incident on the facets at narrow angles to the barrier member to render the barrier member readily visible when illuminated and viewed along or at narrow angles thereto.
Claim 3
Dependent Claim
29 words
A barrier according to claim 1, wherein said retro-reflective facets facing in one direction along the barrier member are differently colored from retro-reflective facets facing in the opposite direction.
Claim 4
Dependent Claim
61 words
A barrier according to claim 2 wherein said light retro-reflective facets facing in said one direction are colored red; and said light retro-reflective facets facing in the opposite direct are colored white so that the barrier member can be arranged at a road side to reflect a red light back to near-side traffic and a white light back to off-side traffic.
Claim 5
Dependent Claim
18 words
A barrier to claim 3 wherein an angle of an apex of each ridge is about 30 degrees.
Claim 6
Dependent Claim
27 words
A barrier according to claim 1 wherein the reflective color portions between said ridges are alternately colored red and white along the length of the barrier member.
Claim 7
Dependent Claim
160 words
A barrier for a temporary free standing barrier system on a roadway or pavement, comprising: an elongate barrier member of rectangular form; coupling means, on said barrier member, for supporting said barrier member on a pair of independent free standing posts; the barrier member having one side face formed with panel portions spaced along the side face, the panel portions having alternate constrasting reflective colors with junctions between adjacent panel portions, whereby said side face is readily visible when illuminated by light from in front of the face; and a plurality of retro-reflective beads mounted at said spaced junctions along the side face of the barrier member between the contrasting colored panel portions and facing in both directions along the barrier member to retro-reflect light incident on the beads along or at a narrow angle to the lengthwise direction of the barrier member to render the barrier member readily visible when illuminated and viewed along or at narrow angles thereto.
Claim 8
Dependent Claim
160 words
A barrier for a temporary free standing barrier system on a roadway or pavement, comprising: an elongate barrier member of rectangular form; coupling means, on said barrier member, for supporting said barrier member on a pair of independent free standing posts; the barrier member having one side face formed with panel portions spaced along the side face, the panel portions having alternate constrasting reflective colors with junctions between adjacent panel portions, whereby said side face is readily visible when illuminated by light from in front of the face; and a plurality of retro-reflective beads mounted at said spaced junctions along the side face of the barrier member between the contrasting colored panel portions and facing in both directions along the barrier member to retro-reflect light incident on the beads along or at a narrow angle to the lengthwise direction of the barrier member to render the barrier member readily visible when illuminated and viewed along or at narrow angles thereto.
Claim 9
Dependent Claim
22 words
A barrier according to claim 6 wherein said retro-reflective beads are mounted along at least one longitudinal edge of the barrier member.
Claim 10
Dependent Claim
35 words
A barrier according to claim 6 wherein the reflective beads facing in one direction along the barrier member have a contrasting color to the reflective beads facing in the opposite direction along the barrier member.
Claim 11
Dependent Claim
28 words
A barrier according to claim 8 wherein the beads facing in said one direction are colored red and the beads facing in the opposite direction are colored white.
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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) | 1991-09-13 | 1992-03-14 | 1992-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-13 | 1996-03-14 | 1996-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-13 | 2000-03-14 | 2000-09-13 | $7700.00 | Window Closed / Lapsed |