US3920346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for direction-indicating surface marking and the like
Assignee: CTF BRITE Corp A CORP OF
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Filing: 1974-09-13
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Granted: 1975-11-18
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Expires: 1994-09-13
Abstract
Abstract This disclosure is concerned with distinctively and unambiguously marking the directions of travel on motoring highways, airports and other surfaces with the aid of a thin novel saw-tooth-like marker strip that is adhered to the traveling surface and the upwardly and downwardly inclining wedges of which are light-transparent, each embedding therewithin an upwardly disposed retroreflective member to indicate the direction of travel.
Inventors
- 👤 Charles W Wyckoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:55
CPC Classifications
E; E01; E01F; E01F9/00; E01F9/50; E01F9/576; E01F9/578
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
108 words
A direction-indicating surface marker apparatus having, in combination, a continuous longitudinally extending strip having length and width many times its thickness and provided with integral successive longitudinally spaced transverse contiguous light-tranSparent upwardly and downwardly inclining wedges of somewhat saw-tooth configuration embedding substantially centrally within each wedge, an upwardly disposed substantially planar transverse retroreflective member; the upwardly and downwardly inclining surfaces of the wedge integrally protecting said member and enabling incident light passing through such surfaces to become retroreflected from said member, presenting a predetermined color indicative of direction, said strip having sufficient structural strength to permit it to be handled and secured to a roadway surface by adhesive.
Claim 2
Dependent Claim
108 words
A direction-indicating surface marker apparatus having, in combination, a continuous longitudinally extending strip having length and width many times its thickness and provided with integral successive longitudinally spaced transverse contiguous light-tranSparent upwardly and downwardly inclining wedges of somewhat saw-tooth configuration embedding substantially centrally within each wedge, an upwardly disposed substantially planar transverse retroreflective member; the upwardly and downwardly inclining surfaces of the wedge integrally protecting said member and enabling incident light passing through such surfaces to become retroreflected from said member, presenting a predetermined color indicative of direction, said strip having sufficient structural strength to permit it to be handled and secured to a roadway surface by adhesive.
Claim 3
Dependent Claim
29 words
A direction-indicating surface marker apparatus as claimed in claim 1 and in which said wedges are of substantially hemispherical contour and said member is substantially diametrically vertically embedded therewithin.
Claim 4
Dependent Claim
29 words
A direction-indicating surface marker apparatus as claimed in claim 1 and in which said wedges are of substantially triangular contour and said member is substantially vertically centrally embedded therewithin.
Claim 5
Dependent Claim
28 words
A direction-indicating surface marker apparatus as claimed in claim 1 and in which said retroreflective member is provided with different color-presenting means on opposite faces of said member.
Claim 6
Dependent Claim
22 words
A direction-indicating surface marker apparatus as claimed in claim 1 and in which said retroreflective member comprises a laminate of retroreflective layers.
Claim 7
Dependent Claim
27 words
A direction-indicating surface marker apparatus as claimed in claim 5 and in which said laminate comprises retroreflective tape disposed on opposite sides of a transverse supporting strip.
References Cited (Backward Citations)
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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) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |