Abstract: Disclosed is a protector for a retro-reflective road marker mounted on a road that includes a top surface that has a generally flat region and a bottom surface oppositely disposed from the top surface. The generally flat region has an opening where the retro-reflective road marker can be at least partially mounted to the protector by deforming studs located along the perimeter of the opening such that the retro-reflective road marker is moveable independent from the protector. The protector is made from a moldable polymer and the top surface is operable to protect the road reflector from motor vehicle tires passing thereover.

Abstract: Disclosed is a protector for a retro-reflective road marker mounted in a road that includes a top portion that has a generally flat region where the retro-reflective road marker can be mounted and a bottom portion oppositely disposed from the top portion. The protector is made from a moldable polymer and the top portion is operable to protect the road reflector from motor vehicle tires passing thereover and the bottom portion of the protector has a bottom arcuate surface that defines an arc extending from the top portion.

Abstract: An improved road marker with a one piece shell and recesses containing elongated members with an undercut relief is provided. The road marker contains a retroreflective lens and a bottom surface with a plurality of the recesses protruding into the shell. The cross section of the recesses can be in the shape of a circle, ellipse, triangle or any shaped polygon, and said cross section can vary as a function of the depth of the recess into the shell and the location of said recess on the bottom surface. The cross section of the elongated member in an axial direction can be in the shape of a circle, ellipse, triangle or any shaped polygon. The undercut relief can be in the form of threads, ridges or any type of indentation into the elongated member that provides a rough surface.

Abstract: A reflective pavement marker includes a shell having a top wall, a side wall extending from an end of the top wall, and reflective end walls extending from an other end of said top wall, wherein the shell forms an interior cavity. The reflective pavement marker also includes a reflective portion integral with the reflective end wall, a reflective coating covering the reflective portion and a bonding coating covering at least the reflective portion. The reflective pavement marker further includes a filler material within the interior cavity of the shell.

Abstract: A road marker and method of manufacturing a road marker having a base with a large surface area. The base is molded around a potted road reflector to completely seal the bottom and encapsulate the ends of the reflective member. The reflective member has end extensions with notches formed to interlock with the base member.

Abstract: A road marker having a collar for mounting a reflector to the surface of the road. The collar is a generally flat disk, having a pair of diametrically opposed projections. The projections have inner planar surfaces to receive a reflector therebetween and curved outer surfaces to facilitate the passage of tires over the marker. The projections have a width and height greater than that of the reflector to protect the ends of the reflector from abrasion. A recess is provided for mounting the reflector to the collar. A plurality of shallow apertures are formed on the bottom surface for receiving a mounting compound for adhering the collar to the road surface.

Abstract: A snowplowable retro-reflective pavement marker having a reflector mounted between a pair of flanged side ramps and a pair of center ramps. The side ramps have longitudinal flanges extending outwardly from each of the ramps to position the base properly with respect to the road surface. The flanges are tapered to provide a smooth contour for guiding snowplow blades when approaching from the side. The center ramps extend longitudinally on either side of the reflector to guide a snowplow blade when it engages the marker at a steep angle.

Abstract: A snowplowable retro-reflective pavement marker having a reflector mounted between a pair of flanged side ramps and a pair of center ramps. The side ramps have longitudinal flanges extending outwardly from each of the ramps to position the base properly with respect to the road surface. The flanges are tapered to provide a smooth contour for guiding snowplow blades when approaching from the side. The center ramps extend longitudinally on either side of the reflector to guide a snowplow blade when it engages the marker at a steep angle.

Abstract: A low profile snowplowable road marker and method of installation is disclosed. The snowplowable road marker has a circular dome section having a pair of deflectors which wrap/encircle a signalling device along a circumferential edge of the marker. The deflectors are separated by a gap to permit drainage. The deflectors have wedge shaped ends to lift the snowplow over the signalling device. The circumferential edge is radiused and mounted in a bore as to be below the level of the road surface.

Abstract: A low profile pavement marker having a glass bead type reflector and an inclined top surface is disclosed. Flanges extend from a peripheral surface on the face and from the rear of the reflector for engagement with epoxy for mounting the pavement marker to the road surface. The front face is angled to permit wiping of the glass beads of the reflector. The shell of the pavement marker may be trimmed to be combined with other shells or other reflectors.

Abstract: A low profile snowplowable road marker and method of installation is disclosed. The snowplowable road marker has a circular top section with opposed dished surfaces extending from a peripheral edge. The peripheral edge is mounted in an outer bore below the level of the road surface. A bridge portion extends between a pair of channels. The bridge portion has at least one inclined wall having a recess for accepting a signalling device. A brow extends outwardly from the inclined wall over the recess to reduce contact between the tire of a vehicle passing over the road marker and the signalling device.

Abstract: A pavement marker for a roadway surface includes a lower base portion and a retro-reflective lens mounted on the base portion at an angle to it. A photopolymerizable clear acrylic protective hard coat is deposited over and integrally formed with the front face of the lens for resisting abrasion of the lens and reducing the loss of optical efficiency resulting from such abrasion. The pavement marker also includes a frame of generally arcuate cross-section formed about an edge of the hard coat potentially susceptible to peeling from impact of vehicle tires against the hard coat. The frame is preferably formed as a bead raised from the face of the marker, and the bead includes a sharp interior edge lying generally perpendicular to the lens, adjacent the edge of the hard coat.

Abstract: A reflective pavement marker of the type having a shell-like housing of synthetic resin or other moldable material with a reflective end wall of light transmitting material with a filler of epoxy or other potting material. The reflective end wall is formed with retro-directive reflective elements of cube corner type. The end wall is dished so that light rays reflect from the array of cube corner reflective elements and converge to enhance the candle power of the reflective light. Also disclosed is a method and apparatus for making the device.

Abstract: A reflective pavement marker of the type having a shell-like housing of synthetic resin or other moldable material with reflective end walls of light transmitting material and a filler of epoxy or other potting material. Ribbing is formed on the inner surface of the housing. The ribbing has a surface that makes an acute angle with respect to the inner surface of the housing to coact with the filler material to increase the resistance to separation of the filler material from the housing.

Abstract: A roadway pavement marker protective member defined by a single rail for the protection of pavement markers. A pavement marker is placed on the roadway surface and one or two of these rails are placed about the pavement marker for its protection. The protective member deflects potential hazards presented by oncoming traffic, such as snowplow machines, from the pavement marker and prevents it from being dislodged.

Abstract: A pavement marker for roadway surface including a housing 12 having a lower base portion 14 and at least one wall 18 extending substantially upwardly from the base portion 14. A retroreflective lens 20 is mounted on the wall 18 and has a front surface 22 facing away from the wall 18. A photopolymerizable clear acrylic protective hard coat is deposited over the front face of the lens for resisting abrasion of the lens and reducing the loss of optical efficiency resulting from such abrasion.A method of making the pavement marker includes the steps of forming the lens 20 having the front face 22, coating the front face 22 of the lens 20 with a photopolymerizable acrylic composition, irradiating the coating with ultraviolet or electron beam irradiation to cure the acrylic composition to an abrasion resistant coating 24, and mounting the lens 20 in the housing 12 to dispose the coated front face 22 away from the housing 12.