Visible markers for road surfaces
OwnerMendel King, Raymond Brannaninventors
Life of this patent
Estimating the term…
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.
Claims9
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.--
Dependencies are inferred from the claim text.