Claims
- 1. A reflector assembly for use in an associated metal housing to provide a road surface marker, the associated metal housing having a generally rectangular cavity with a horizontal base formed therein, front and rear walls structured and dimensioned to the positioned perpendicular to the direction of traffic when said metal housing is secured to the road surface, and opposed side walls provided with integral attachment fingers extending into the cavity, said reflector assembly comprising:
- a resilient elastomeric core structured and dimensioned to be removably positioned in said metal housing and to extend in a normal operative position above said metal housing,
- said core being formed of Neoprene which includes a lubricant therewithin,
- said core including a hollow base portion of generally rectangular cross-section, and an upper lens housing portion,
- said hollow base portion having a front wall, a rear wall, and a pair of oppositely disposed side walls, each said side wall having apertures therein structured and dimensioned to register with and receive said opposing pairs of attachment fingers of said metal housing side walls when said core is positioned in said metal housing cavity;
- said lens housing portion including generally parallel front and rear walls parallel to said front and rear walls of said metal housing and including opposed inwardly inclined side walls extending upwardly from said base side walls and joined to a generally flat upper wall,
- at least one of said front or rear walls of said wall portion being provided with an inwardly extending wiper blade extending substantially from one side wall to the other side wall;
- a lens retainer block integral with said lens housing portion, said retainer block having a recess therein structured and dimensioned to receive an elongated lens member,
- said lens member having a generally flat front face terminating in a radiused lowermost edge and being provided on the rear face thereof with a plurality of cube-corner type reflecting elements for reflecting light incident on said front face generally parallel and back to the source thereof,
- said lens member being formed of a synthetic organic resin and further being provided with an outer light transmitting protective surface generally coextensive with the reflective area of said lens member, said outer surface being formed of a more abrasion resistant material than said lens member, whereby upon placement of said core in the associated metal housing, engagement of said upper lens housing portion by a vehicle tire will cause said upper body portion to be forced through a range of movement into said hollow are provided by said base member and into the cavity defined by said associated housing,
- said lens member and the associated abrasive resistant surface thereon effecting a wiping and debris cleaning movement against said wiping blade formed on said base member during said movement,
- said lens housing portion resiliently returning to said normal operative position thereof when disengaged by said vehicle tire.
- 2. The reflector assembly set forth in claim 1, wherein said protective surface face of said lens member is glass.
- 3. The reflector assembly set forth in claim 1, wherein one said wiper blade is positioned approximately at the plane of the associated roadway surface and adjacent to the front face of said lens member.
- 4. The reflector assembly set forth in claim 1, and further including means for fixedly securing said lens member to said upper lens housing portion.
- 5. The reflector assembly set forth in claim 1, wherein said lens member includes a "T" shaped section adhered to the lens member and having a leg of the "T" embedded in an accompanying groove provided in the upper lens housing portion.
- 6. The reflector assembly set forth in claim 1, wherein said wiper blade is configured such that the central portion between said side walls is curved inwardly toward said lens member thereby to assure uniform pressure on said lens member during wiping movement thereof past said wiper blade.
- 7. The reflector assembly set forth in claim 1, wherein said cube-corner type lens member includes a rearwardly extending peripheral wall and a plurality of rearwardly extending dividing walls separating areas of said cube-corner elements into discrete cellular sections, and a rigid backing member secured to said walls thereby to hermetically seal the same.
- 8. A reflector assembly for use in an associated metal housing to provide a road surface marker, the associated metal housing having a generally rectangular cavity with a horizontal base formed therein, front and rear walls structured and dimensioned to be positioned perpendicular to the direction of traffic when said metal housing is secured to the roadway surface, and opposed side walls provided with integral attachment fingers extending into the cavity, said front, rear and side wall having upper edges intended to be above the associated road surface when the metal housing is fixedly installed thereon, said reflector assembly comprising,
- a resilient elastomeric core structured and dimensioned to be removably positioned in said metal housing and to extend, in a normal operative position, above said metal housing;
- said core including a hollow base portion of generally rectangular cross-section, and an upper lens housing portion,
- said hollow base portion having a front wall, a rear wall, and a pair of oppositely disposed side walls, each said sidewall having apertures therein structured and dimensioned to register with and receive said opposing pairs of attachment fingers of said metal housing side walls when said core is positioned in said metal housing cavity,
- said lens housing portion including generally parallel front and rear walls parallel to said front and rear walls of said metal housing and including opposed inwardly inclined side walls extending upwardly from said base side walls and joined to a generally flat upper wall,
- at least one of said front or rear walls of said base portion being provided with an inwardly extending wiper blade extending substantially from one side wall to the other side wall;
- a lens retainer block integral with said lens housing portion, said retainer block having a recess therein structured and dimensioned to receive an elongated lens member therein;
- said lens member having opposite ends and an upper and lower edge, with said lower edge being radiused;
- said lens member having a generally flat rear face and a leg extending along said rear face between said opposite ends,
- said lens member having a generally flat front surface and being provided with a plurality of cube-corner type reflecting elements as the rear surface of said front face for reflecting light incident on said front face generally parallel and back to the source thereof,
- said lens member being formed of a synthetic organic resin and further being provided with an outer light transmitting protective surface generally coextensive to the reflective area of said lens member, said outer surface being formed of a more abrasion resistant material than said lens member, whereby upon placement of said core in the associated metal housing, engagement of said upper lens housing portion by a vehicle tire will cause said upper body portion to be forced through a range of movement into and thereafter out of said hollow area provided by said base member and into the cavity defined by said associated casting,
- said lens member and the associated abrasive resistant surface thereon effecting a wiping and debris cleaning movement against said wiping blade formed on said base member during said movement,
- said lens housing portion resiliently returning to said normal operative position thereof;
- said elastomeric core including means for reducing the tension generated within said core when said core is forced through said range of movement,
- said tension reduction means including at least one channel formed within said upper lens housing portion.
- 9. The reflector assembly of claim 8, wherein at least one said channel extends vertically within said upper lens housing portion.
- 10. The reflector assembly of claim 8, wherein at least one said channel is positioned proximate one said lens member.
- 11. The reflector assembly of claim 8, wherein at least one said channel is positioned within said lens retaining block.
- 12. The reflector assembly of claim 11, wherein each said channel extends generally vertically.
- 13. The reflector assembly of claim 8 wherein said tension reduction means includes at least two vertically extending channels formed within said upper lens housing portion and positioned proximate said opposite ends of said lens member.
- 14. The reflector assembly of claim 8 wherein said tension reduction means includes forming said lens leg centrally on said rear lens face and terminating said lens leg short of said lens member ends.
- 15. The reflector assembly of claim 8 wherein said tension reducing means includes means for securing said lens leg to said core in said recess, said securing means being applied to a central portion of said lens leg, said central portion being less in length than said lens leg,
- the remaining portion of said lens leg being positioned in said recess.
- 16. The reflector assembly of claim 15 wherein said securing means is an adhesive.
- 17. A reflector assembly for use in an associated rigid housing to provide a road surface marker, the associated rigid housing having a horizontal base with sidewalls extending above said base to define therewithin a cavity, said reflector assembly comprising:
- a resilient elastomeric core structured and dimensioned to be positioned in said cavity and to extend, in a normal operative position, above said rigid housing,
- said core being formed of Neoprene which includes a lubricant therewithin,
- means to retain said core in said housing;
- said core including an upper lens housing portion;
- a lens retainer block integral with said upper lens housing portion;
- a lens member having a plurality of reflecting elements for reflecting light incident on said lens member generally parallel and back to the source thereof, said lens retainer block including means for securing said lens member to said block,
- whereby engagement of said upper lens housing portion by a vehicle tire will cause said upper lens housing portion to be forced through a range of movement into said cavity defined by said housing.
- said core structured and dimensioned to cause said upper lens housing portion to resiliently return to said normal operative position thereof when disengaged by said vehicle tire.
Parent Case Info
The present invention relates to an improvement in pavement markers and, more particularly, to an improvement in the type of marker frequently used in Great Britain and referred to as traffic or road studs, or cat's eye markers. This is an improvement of the invention described and claimed in copending British application Ser. No. 83/25528, filed Sept. 23, 1983, and is a continuation-in-part of copending U.S. application Ser. No. 778,491, filed Sept. 20, 1985, which is a continuation-in-part of U.S. application Ser. No. 06/728,835, filed Apr. 30, 1985, and now abandoned.
US Referenced Citations (6)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2434064 |
Jan 1976 |
DEX |
Continuation in Parts (2)
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Number |
Date |
Country |
Parent |
778491 |
Sep 1985 |
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Parent |
728835 |
Apr 1985 |
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