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US3989351A Expired / Lapsed US ⏱️ 0.0 years remaining

Reflection device

Assignee: Individual
•
Filing: 1974-12-10
•
Granted: 1976-11-02
•
Expires: 1994-12-10
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Abstract

Abstract The invention provides an improved reflection device comprising a tubular means enclosing a reflective element and arranged for mounting at desired level over a road surface at some distance from the road border. In the preferred embodiment, the tubular means has two open ends, and the reflective element has reflective material at both sides thereof and is arranged for being detachably inserted through a slot in the envelope wall of the tubular means. For eliminating or decreasing the risk of soiling the reflective element, said element is protected by the tubular means which has portions of substantial length in front of both sides of the reflective element. Preferably, each of said portions have a length of at least equal to half the internal maximum cross section dimension of the tubular means at the location of the reflective element. The reflective element is provided with a grip and is easily insertable and removable into and out from said slot. The slot is preferably converging towards the open end thereof. The tubular means can be moulded of plastic material integrally with an attachment flange for mounting said tubular means to a support rod.

Inventors

  • 👤 John Bjorlund

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 17:28
CPC Classifications
E; E01; E01F; E01F9/00; E01F9/60; E01F9/604; E01F9/619; E01F9/608; E01F9/61

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 198 words
A reflective road marker comprising an elongated tubular means for removably supporting a reflecting element; means on said tubular means for mounting the tubular means at a desired level horizontally disposed over a road surface or similar surface so that said reflecting element is visable through opposite ends of said tubular means, the improvement wherein said tubular means includes an intermediate, transverse slot normal to the longitudinal axis thereof and opening into the outer surface of said tubular means; and a reflecting element having opposite reflecting surfaces, removably disposed in said slot, said tubular means having portions at opposite sides of said reflecting element of a length at least substantially equal to half the maximum internal cross-section of said tubular means at the location of the reflecting element, the portions of said tubular means at opposite sides of said reflecting element comprising through passages at which the reflecting surfaces of the reflecting element are exposed; said slot in the tubular means having a width substantially equal to the thickness of said reflecting element, said slot tapering from a medial portion of said tubular means toward the outer surface therefor for grippingly engaging opposite sides of said reflecting element.
Claim 2
Dependent Claim 198 words
A reflective road marker comprising an elongated tubular means for removably supporting a reflecting element; means on said tubular means for mounting the tubular means at a desired level horizontally disposed over a road surface or similar surface so that said reflecting element is visable through opposite ends of said tubular means, the improvement wherein said tubular means includes an intermediate, transverse slot normal to the longitudinal axis thereof and opening into the outer surface of said tubular means; and a reflecting element having opposite reflecting surfaces, removably disposed in said slot, said tubular means having portions at opposite sides of said reflecting element of a length at least substantially equal to half the maximum internal cross-section of said tubular means at the location of the reflecting element, the portions of said tubular means at opposite sides of said reflecting element comprising through passages at which the reflecting surfaces of the reflecting element are exposed; said slot in the tubular means having a width substantially equal to the thickness of said reflecting element, said slot tapering from a medial portion of said tubular means toward the outer surface therefor for grippingly engaging opposite sides of said reflecting element.
Claim 3
Dependent Claim 19 words
The reflective road marker according to claim 1, wherein said tubular means is symmetric along the longitudinal axes thereof.
Claim 4
Dependent Claim 45 words
The reflective road marker according to claim 1, wherein said tubular means is cylindrical in cross-section and where the portions of the tube located towards the open ends of the tube each have a length substantially equal to half the internal diameter of the tube.
Claim 5
Dependent Claim 48 words
The reflective road marker according to claim 3, wherein said slot is perpendicular to the mid portion of the cylindrical tube and along half the circumference of the tube, said slot having at the base portion thereof a width substantially equal to the thickness of the reflecting element.

References Cited (Backward Citations)

US2241596A Cited
US3551024A Cited
US3796477A Cited
US3802378A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-11-02 1980-05-03 1980-11-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-11-02 1984-05-03 1984-11-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-11-02 1988-05-03 1988-11-02 $7700.00 Window Closed / Lapsed

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