US4069281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prefabricated roadway marking strip material and method for producing same
Assignee: 3M Co
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Filing: 1975-09-29
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Granted: 1978-01-17
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Expires: 1995-09-29
Abstract
Abstract A method of producing a prefabricated roadway marking strip material adapted to be applied on and secured to selected areas of a prepared roadway pavement so as to form thereon a traffic regulating indicium comprised of defined signalling surfaces having nighttime visibility and non-skid properties consistent with that of the adjacent roadway pavement. The material comprises a base layer and a traffic-regulating, sign-forming and traffic wear-resisting upper layer having a generally smooth surface, spaced protuberances bulging from said surface and reflective elements concentrated on the top portions of the protuberances for providing said visibility and non-skid properties.
Inventors
- 👤 Ludwig Eigenmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:07
CPC Classifications
E; E01; E01F; E01F9/00; E01F9/50; E01F9/576; E01F9/578; E01F9/506; E01F9/512
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
133 words
A method of making a preformed roadway marking strip, comprising the steps of providing a lower layer of base-forming material which is to be subsequently applied over a roadway surface; applying a hardenable synthetic plastic material over said lower layer to form thereon an upper layer of such synthetic plastic material; embedding anti-skid particles in said upper layer prior to hardening of said synthetic plastic material; applying additional quantities of synthetic plastic material onto said upper layer at longitudinally spaced locations of the same and prior to hardening of the material thereof, so that each such additional quantity forms a protuberance on said upper layer; and cascading light-reflective particles over said protuberances prior to hardening of the synthetic plastic material thereof, so that upon subsequent hardening said light-reflective particles adhere to said protuberances.
Claim 2
Independent Claim
133 words
A method of making a preformed roadway marking strip, comprising the steps of providing a lower layer of base-forming material which is to be subsequently applied over a roadway surface; applying a hardenable synthetic plastic material over said lower layer to form thereon an upper layer of such synthetic plastic material; embedding anti-skid particles in said upper layer prior to hardening of said synthetic plastic material; applying additional quantities of synthetic plastic material onto said upper layer at longitudinally spaced locations of the same and prior to hardening of the material thereof, so that each such additional quantity forms a protuberance on said upper layer; and cascading light-reflective particles over said protuberances prior to hardening of the synthetic plastic material thereof, so that upon subsequent hardening said light-reflective particles adhere to said protuberances.
Claim 3
Dependent Claim
25 words
A method as defined in claim 1; and further comprising the step of embedding light-reflective particles in said upper layer together with said anti-skid particles.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-16 | 1981-07-18 | 1982-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-16 | 1985-07-18 | 1986-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-16 | 1989-07-18 | 1990-01-17 | $7700.00 | Window Closed / Lapsed |