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US3575092A Expired / Lapsed US ⏱️ 0.0 years remaining

Highway divider button

Assignee: Individual
•
Filing: 1969-05-22
•
Granted: 1971-04-13
•
Expires: 1989-05-22
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Abstract

Abstract For use along divider strips on highways, a button which is attached to the pavement to remind drivers to stay in divided lanes, the button preferably being comprised of an ionomer base which provides desirable abrasion-resistant and impact-resistant characteristics, the base having added thereto a suitable filler such as titanium oxide to impart a desired color thereto and being joined to the pavement through a preferably integral adhesive which is dry and nontacky at most temperatures, but which becomes adhesive at elevated temperatures to join the button to the pavement. The button, when joined to the pavement, is particularly advantageous in the absorption of impact or shock and does not transmit pavement-damaging shock to the pavement.

Inventors

  • 👤 Clarence S Freeman

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 11:34
CPC Classifications
E; E01; E01F; E01F9/00; E01F9/50; E01F9/553

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 61 words
A highway button comprising a curved rounded surface having an absence of sharp corners or edges and a lower face adapted to be contacted against the surface of a highway, the body of said highway button being comprised of a metal ion-neutralized copolymer which consists of ethylene and an acid selected from the group consisting of acrylic acid or methacrylic acid.
Claim 2
Dependent Claim 61 words
A highway button comprising a curved rounded surface having an absence of sharp corners or edges and a lower face adapted to be contacted against the surface of a highway, the body of said highway button being comprised of a metal ion-neutralized copolymer which consists of ethylene and an acid selected from the group consisting of acrylic acid or methacrylic acid.
Claim 3
Dependent Claim 18 words
The invention of claim 1 wherein said copolymer includes from about 5 to 20 percent of the acid.
Claim 4
Dependent Claim 21 words
The invention of claim 1 wherein the metal ions are selected from the group consisting of sodium, zinc, lithium, or potassium.
Claim 5
Dependent Claim 35 words
The invention of claim 1 including an adhesive on the lower face of said button which is inert and nontacky at room temperature, and becomes adhesive at elevated temperatures sufficient to make said adhesive tacky.
Claim 6
Dependent Claim 12 words
The invention of claim 4 wherein said adhesive is a hydralized copolymer.
Claim 7
Dependent Claim 19 words
The invention of claim 1 including a filler material comprising a portion of the body of said highway button.
Claim 8
Dependent Claim 21 words
The invention of claim 6 wherein said filler comprises about 40 percent to 60 percent by weight of said highway button.
Claim 9
Dependent Claim 11 words
The invention of claim 6 wherein said filler is titanium dioxide.
Claim 10
Dependent Claim 22 words
The invention of claim 6 wherein said filler is selected from the group consisting of titanium dioxide, barium sulfate, or calcium carbonate.
Claim 11
Dependent Claim 19 words
The invention of claim 1 including a reflective surface on the exterior of the body of said highway button.

References Cited (Backward Citations)

US3404134A Cited
US3096694A Cited
US3114597A Cited
US3373224A Cited
US3332327A Cited
US3347957A Cited
US3373223A Cited
US3428514A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-04-12 1974-10-12 1975-04-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-04-12 1978-10-12 1979-04-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-04-12 1982-10-12 1983-04-13 $7700.00 Window Closed / Lapsed

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