초록 ▼

A pavement marker having a relatively fragile pavement marker housing and a snow plow frame for guiding snow plows and similar implements over the pavement marker housing. Retrodirective reflector elements may be included in the pavement marker housing. The snow plow frame includes a unitary sheet m

A pavement marker having a relatively fragile pavement marker housing and a snow plow frame for guiding snow plows and similar implements over the pavement marker housing. Retrodirective reflector elements may be included in the pavement marker housing. The snow plow frame includes a unitary sheet metal body adapted to be secured to the roadway surface and having a base member with a fore and aft axis that extends parallel to the direction of travel when the body is secured to the roadway, and a transverse axis perpendicular to the fore and aft axis. A pair of snow plow ramp sections are formed on the body on opposite sides of the fore and aft axis, each of the ramp sections including a pair of snow plow ramps extending in opposite directions from the transverse axis. Each of the snow plow ramps has an enlarged end adjacent the transverse axis and decreases in cross-section to a tip portion at the distal end thereof spaced from the transverse axis. An opening is formed in the base member for receiving and positioning the pavement marker housing relative to the frame, and a strap member extends from one ramp section to the other along the transverse axis to overlie the pavement marker housing.

대표청구항 ▼

A pavement marker comprising: a snow plow frame having a unitary sheet metal body adapted to be secured to the surface of a roadway, said body having a base member with a fore and aft axis that extends parallel to the direction of travel when the body is secured to a roadway, and a transverse axis p

A pavement marker comprising: a snow plow frame having a unitary sheet metal body adapted to be secured to the surface of a roadway, said body having a base member with a fore and aft axis that extends parallel to the direction of travel when the body is secured to a roadway, and a transverse axis perpendicular to said fore and aft axis; a pair of snow plow ramp sections formed on said body on opposite sides of said fore and aft axis, each of said ramp sections including a pair of snow plow ramps extending in opposite directions from said transverse axis; each of said snow plow ramps having an inner side wall projecting upwardly from said base member on the side of said snow plow ramp adjacent said fore and aft axis, an outer side wall on the opposite side of its respective inner side wall from said fore and aft axis, an a top wall extending between the upper edges of said inner and outer side walls; each of said snow plow ramps having an enlarged end adjacent said transverse axis and decreasing in cross-section to a tip portion at the distal end thereof spaced from said transverse axis; a first opening in said base member extending on both sides of said transverse axis; an elongated strap spaced from the plane of said base and extending from one ramp section to the other along said transverse axis; said strap having one end connected with one ramp section and its other end connected with the other ramp section and being otherwise unconnected with said body so that there is a space between said strap and base member; a second opening in the junction of the inner side walls of the oppositely extending snow plow ramps of each of said ramp sections, each of said second openings having an flange-like edge portion extending from the edge of said first opening to said strap on opposite sides of said strap; a pavement marker housing seated in said opening; said pavement makrer housing having a top wall spaced from the plane of said base member and extending between said snow plow ramp sections beneath said strap; said pavement marker housing having a pair of outer walls intersected by said fore and aft axis and extending from opposite edges of the top wall thereof to the edge of said first opening such that the lower edge of each of said outer walls engages an edge of said first opening; said pavement marker housing having a pair of longitudinal ribs extending between said outer walls on opposite sides of said fore and aft axis and joined integrally to the top wall and outer walls of said housing to define an open ended chamber in said pavement marker housing; the edge portions of said second openings closely engaging the outer walls of said pavement marker housing; a closure plate sealingly secured to the outer walls and longitudinal ribs of said pavement marker housing to close and hermetically seal said chamber; at least one of said outer walls being transparent such that the interior of said chamber is visible through said transparent outer walls; a nighttime marker element received in said chamber, said marker element having retro-directive reflector elements formed thereon for reflecting light rays incident on said transparent outer walls; and desiccant material in said chamber to prevent the accumulation of moisTure therein.