US4726706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflective pavement marker
Assignee: Individual
•
Filing: 1986-06-02
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Granted: 1988-02-23
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Expires: 2006-06-02
Abstract
Abstract A retro-reflective roadway marker is generally comprised of a one-piece housing, having integrally molded retro-reflective faces. The reflective faces having outside surfaces with abrasing reducing raised members and inside surfaces of light reflecting elements that are preferably formed from three mutually intersecting surfaces. In one form the reflective elements within the housing are integrally molded with partition walls, dividing the reflective elements into small cells, each cell with a plurality of the reflective elements functioning independently without being encapsulated by the filler material.
Inventors
- 👤 Adil H. Attar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:16
CPC Classifications
E; E01; E01F; E01F9/00; E01F9/50; E01F9/553
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
159 words
A reflective pavement marker comprising an integrally molded multisided hollow housing made of organic resinous material which has at least one side formed to be reflective face, said reflective face having an outside surface including rhombic shaped raised load bearing portions defining planar surfaces of a plurality of rhombic shaped cells, said cells adapted to intercept light from oncoming vehicles, said rhombic shaped cells each having an inside surface comprising at least one light reflecting element, said at least one element having three mutually intersecting surfaces, said inside surfaces of the rhombic shaped cells being divided by partition and load carrying walls which provide means to isolate and seal said at least one reflective element within each cell from adjacent cells, a backing sheet adhered to said partition and load carrying walls, said backing sheet made of organic resinous material, the interior of the housing being completely filled with thermosetting material and said thermosetting material supporting the backing sheet.
Claim 2
Dependent Claim
159 words
A reflective pavement marker comprising an integrally molded multisided hollow housing made of organic resinous material which has at least one side formed to be reflective face, said reflective face having an outside surface including rhombic shaped raised load bearing portions defining planar surfaces of a plurality of rhombic shaped cells, said cells adapted to intercept light from oncoming vehicles, said rhombic shaped cells each having an inside surface comprising at least one light reflecting element, said at least one element having three mutually intersecting surfaces, said inside surfaces of the rhombic shaped cells being divided by partition and load carrying walls which provide means to isolate and seal said at least one reflective element within each cell from adjacent cells, a backing sheet adhered to said partition and load carrying walls, said backing sheet made of organic resinous material, the interior of the housing being completely filled with thermosetting material and said thermosetting material supporting the backing sheet.
Claim 3
Dependent Claim
38 words
The marker of claim 1 in which the outside surface of the reflective face makes an acute angle X with the base plane, said acute angle X to be within the range of about 20° to about 50°.
Claim 4
Dependent Claim
70 words
The marker of claim 1 in which a generally horizontal base and top interconnect said reflective faces with two multi-angled sides, said sides each form two distinct angles A 1 and A 2 with the vertical planes, said angle A 1 having a value within the range of about 5° to about 15° and said angle A 2 having a value within the range of about 15° to about 60°.
Claim 5
Dependent Claim
18 words
The marker of claim 1 wherein said inside surface of each cell has a plurality of reflecting elements.
Claim 6
Dependent Claim
91 words
The marker of claim 1 in which the three mutually intersecting surfaces of said reflective elements are of the cube corner type within each cell, said cube corner being positioned such that the axis through each cube corner makes an acute angle with the normal to the outside surface of the reflective face, the size and the number of said reflective cube corner elements within each said rhombic cell is set forth by the size of the rhombic cells to be used within the inside surface of the said reflective face.
Claim 7
Dependent Claim
26 words
The marker of claim 1 in which the three mutually intersecting surfaces of said reflecting elements with at least two surfaces being perpendicular to one another.
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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) | 1991-02-22 | 1991-08-24 | 1992-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-22 | 1995-08-24 | 1996-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-22 | 1999-08-24 | 2000-02-23 | $7700.00 | Window Closed / Lapsed |