US4049358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Visible markers for road surfaces
Assignee: Individual
•
Filing: 1976-02-23
•
Granted: 1977-09-20
•
Expires: 1996-02-23
Abstract
Abstract A marker for road surfaces is of the type having a mounting adapted to be fixed in the roadway with an aperture at the upper end of the mounting for holding a visible portion held in upraised position by spring means; in the marker of the invention the visible portion is at least one reflector and/or light source, enclosed in a translucent sealed casing which is shaped to move vertically within the mounting. Preferably the visible portion is a pair of corner-cube reflectors, the mounting around the aperture contacts the casing so as to wipe its faces clean, and the spring means is a solid rubber ball.
Inventors
- 👤 Mendel King
- 👤 Raymond Brannan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:08
CPC Classifications
E; E01; E01F; E01F9/00; E01F9/50; E01F9/553; E01F9/565; E01F9/571; E01F9/559
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
142 words
A light-reflective road marker comprising: 1. an outer tubular member closed at its base and adapted for mounting in a roadway, the upper part having a flange extending outwardly to lie on the surface of the roadway, 2. at least one reflector held in a translucent plastic casing mounted for reciprocation in the upper part of the tubular member with its reflective surface against the inside of the casing in a plane of the long axis of the tubular member, and 3. spring means within the tubular member arranged to bias the reflector casing upwardly to allow retraction of the casing into the tubular member under pressure of a vehicle tire, said spring means being a solid spherical ball made of silicone rubber, and said casing is a polycarbonate resin sealing said reflector hermetically therewith so that entry of moisture is prevented.--
Claim 2
Dependent Claim
142 words
A light-reflective road marker comprising: 1. an outer tubular member closed at its base and adapted for mounting in a roadway, the upper part having a flange extending outwardly to lie on the surface of the roadway, 2. at least one reflector held in a translucent plastic casing mounted for reciprocation in the upper part of the tubular member with its reflective surface against the inside of the casing in a plane of the long axis of the tubular member, and 3. spring means within the tubular member arranged to bias the reflector casing upwardly to allow retraction of the casing into the tubular member under pressure of a vehicle tire, said spring means being a solid spherical ball made of silicone rubber, and said casing is a polycarbonate resin sealing said reflector hermetically therewith so that entry of moisture is prevented.--
Claim 3
Dependent Claim
31 words
A marker as claimed in claim 1, wherein the edges of the said aperture in the mounting are wiping portions which contact the faces of the casing which contain the reflector.
Claim 4
Dependent Claim
18 words
A marker as claimed in claim 2, wherein the mounting is made of a self-lubricating synthetic plastics material.
Claim 5
Dependent Claim
26 words
A marker as claimed in claim 3, wherein the mounting is made of polypropylene and the wiping portions are integral with the body of the mounting.
Claim 6
Dependent Claim
17 words
A marker as claimed in claim 1, wherein the visible portion is at least one corner-cube reflector.
Claim 7
Dependent Claim
30 words
A marker as claimed in claim 5, which comprises a pair of the reflectors placed within the housing with their facetted surfaces toward each other and separated by a gap.
Claim 8
Dependent Claim
19 words
A marker as claimed in claim 1, wherein the mounting includes shoulders raised above the aperture for the casing.
Claim 9
Dependent Claim
18 words
A marker as claimed in claim 1, wherein at least one of the mounting and reflector is coloured.
Claim 10
Dependent Claim
22 words
A marker as claimed in claim 1, in which a window is formed in the facetted surface of the or each reflector.
References Cited (Backward Citations)
US2157059A
Cited
GB614657A
Cited
GB738993A
Cited
US2941447A
Cited
GB965583A
Cited
US3292506A
Cited
US3377930A
Cited
US3717076A
Cited
US3703855A
Cited
US3920348A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-19 | 1981-03-21 | 1981-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-19 | 1985-03-21 | 1985-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-19 | 1989-03-21 | 1989-09-20 | $7700.00 | Window Closed / Lapsed |