WO2019148016A1 - Marqueur de chaussée pouvant faire office de chasse-neige - Google Patents

Marqueur de chaussée pouvant faire office de chasse-neige Download PDF

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Publication number
WO2019148016A1
WO2019148016A1 PCT/US2019/015263 US2019015263W WO2019148016A1 WO 2019148016 A1 WO2019148016 A1 WO 2019148016A1 US 2019015263 W US2019015263 W US 2019015263W WO 2019148016 A1 WO2019148016 A1 WO 2019148016A1
Authority
WO
WIPO (PCT)
Prior art keywords
holder
reflector
pocket
marker
opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2019/015263
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English (en)
Inventor
Harry E. LOWE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2019148016A1 publication Critical patent/WO2019148016A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/50—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users
    • E01F9/553—Low discrete bodies, e.g. marking blocks, studs or flexible vehicle-striking members
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F11/00—Road engineering aspects of Embedding pads or other sensitive devices in paving or other road surfaces, e.g. traffic detectors, vehicle-operated pressure-sensitive actuators, devices for monitoring atmospheric or road conditions
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/50—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users
    • E01F9/576—Traffic lines
    • E01F9/578—Traffic lines consisting of preformed elements, e.g. tapes, block-type elements specially designed or arranged to make up a traffic line
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/50—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users
    • E01F9/506—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users characterised by the road surface marking material, e.g. comprising additives for improving friction or reflectivity; Methods of forming, installing or applying markings in, on or to road surfaces
    • E01F9/512—Preformed road surface markings, e.g. of sheet material; Methods of applying preformed markings

Definitions

  • the present invention relates to reflectors and, more particularly, to snowplowable pavement markers.
  • Pavement markers provide visible delineation of center lines, edge lines, turning lanes, ramps, and the like. Pavement markers must withstand damage 25 from vehicle traffic, snowplows, and sundry environmental factors. Presently, two types of snowplowable pavement markers are generally being used, namely, raised markers and recessed markers.
  • a typical raised marker utilizes a heavy iron casting embedded within a pavement cutout.
  • the casting has raised laterally spaced inclined longitudinal BO keels or rails, and a reflector held between and at a lower height than the rails.
  • Raised markers have been used extensively in snow-belt states, as the rails effectively guide the snowplow up and over the reflector.
  • raised marker castings are often dislodged from the pavement, which then potentially become heavy projectiles 5 capable of causing both vehicle damage and personal injury.
  • some states have already demanded increased inspection of raised markers and/or their removal.
  • Recessed markers which are being increasingly specified in highway construction, are mounted below the pavement surface in long narrow line-of- io sight grooves that allow vehicle headlight rays to illuminate the reflector.
  • Recessed markers typically have reflector assemblies that are held in plastic holders.
  • the plastic holders are positioned in the grooves and fixed to the roadway pavement by epoxy or other suitable adhesive.
  • Raised snowplowable markers using cast iron metal holders introduced is commercially in 1976, were the forerunner of present day designs. Then and now, the reflector predominantly used in raised and recessed snowplowable markers has an integral butyl rubber pad coated with pressure sensitive adhesive as its bottom surface.
  • the bond between the reflector and the iron holder is tenuous.
  • water penetration under the butyl-type pad causes continuing interfacial rusting and subsequent release of the reflector from the holder.
  • the iron holder disclosed herein illustrates a solution to these problems by providing a tough, non-rusting, structural adhesive surface in the holder for initial and future bonding of the reflector to the holder.
  • the present invention is directed to overcoming one or more of the problems as set forth above.
  • It is an object to provide a marker that is fixed to a roadway with adhesive is comprising a holder and a reflector wherein the holder has a bottom through opening permitting adhesive to directly adhere the holder and reflector to the roadway.
  • the holder is a metal casting with spaced keels and a central connecting portion defining a pocket sized and configured to receive a reflector within the pocket and having an opening through the bottom of the pocket.
  • the holder is a thin, rectangular, plastic container having a pocket sized and configured to receive a reflector within the pocket and having an opening through the bottom of the pocket.
  • a roadway marker has a reflector and a holder with an opening formed in the bottom permitting epoxy or other adhesive BO to flow into the interior of the holder and into contact with the reflector.
  • the opening is circumscribed by a tapered wall so that epoxy or other adhesive can flow onto the taper and positively lock the holder and reflector down to the pavement.
  • the holder opening is dimensionally smaller than the pocket to define a shoulder for supporting the reflector.
  • Fig. 1 is an exploded perspective view of a prior art marker having a metal holder with a closed pocket and a reflector;
  • Fig. 2 is an exploded perspective view of a first embodiment of a marker is having a metal holder with a bottom opening and a reflector;
  • Fig. 3 is a top plan view of the metal holder shown in Fig. 2;
  • Fig. 4 is a vertical cross-sectional view of the metal holder taken along line 4-4 of Fig. 3;
  • Fig. 5 is an exploded perspective view of a second embodiment of a 2o marker having a plastic holder with a bottom opening and a reflector;
  • Fig. 6 is a top plan view of the plastic holder shown in Fig. 5;
  • Fig. 7 is a vertical cross-sectional view of the plastic holder taken along line 7-7 of Fig. 6;
  • Fig. 8 is a vertical cross-sectional view of the plastic holder taken along 25 line 8-8 of Fig. 6;
  • Fig. 9 is a vertical cross-sectional view of the marker shown in Fig. 2 and a portion of roadway in which it is installed taken along one side of the metal holder;
  • Fig. 10 is a vertical cross-sectional view of the marker shown in Fig. 2 and BO a portion of roadway in which it is installed taken through the center of the metal holder; and, Fig. 11 is a vertical cross-sectional view of the marker shown in Fig. 5 and a portion of roadway in which it is installed taken through the center of the plastic holder.
  • a prior art raised roadway marker, generally designated 30, is seen to be comprised of a metal holder, generally designated 31 , and a reflector, generally designated 32.
  • the holder 31 which may be integrally formed as a metal casting, typically iron, is bilaterally symmetrical and includes a pair of longitudinally-extending, laterally-spaced rails, or keels 34, connected by a supporting cross member 35.
  • Each keel 34 has an outer side wall 37, an inner side wall 38, a top wall 39, and a stepped convex bottom wall 40.
  • the top wall 39 includes a flat top surface 41 , forward and rearward ramp surfaces 42 and 43, and forward and rearward inclined surfaces 44 and 45 adjacent the keel ends 46 and 47.
  • a pair of positioning tabs 48, or projecting sponsons, extend outward from the outer side wall 37 at the top of tapering grooves 49.
  • the cross member 35 has a relatively flat top surface 50 and an arcuate bottom surface (not shown). Formed in the top surface 50 is a downwardly- extending, generally rectangularly shaped pocket 55 having a planar floor 56 that extends laterally into the side walls 38.
  • the reflector 32 comprises a plastic body 70 and one or more
  • the reflector body 70 has an attached butyl
  • elastomeric adhesive pad 73 at the bottom, trapezoidal high lateral end walls 74, and low axial walls 75 defining recesses in which the retroreflective lenses 71 are mounted.
  • the angularly-mounted retroreflective lenses 71 typically include a flat lens 77 on the exposed obverse face sealing a series of cells each having an array of microprismatic cube elements, or triple mirror corner reflectors, internally disposed along the reverse face.
  • Reflector assemblies of the type described here are commercially available from Ennis-Flint, Inc. of Thomasville, North Carolina, and from 3M Company's Traffic Safety and Security Division of St.
  • an improved raised roadway marker is seen to be comprised of a metal holder, generally designated 131 , and a reflector 32.
  • the reflector 32 is of the type described above.
  • the holder 131 may be integrally formed as a single metal casting approximately 10 inches long, 1.9 inches high, and 5.75 inches wide.
  • the casting which is typically made of iron and is bilaterally symmetrical, includes a pair of longitudinally-extending, laterally-spaced rails, or keels 134, connected by a transverse supporting cross member 135.
  • Each keel 134 has an outer side wall 137, an inner side wall 138, a top wall 139 and a stepped convex bottom wall 140.
  • the top wall 139 includes a flat top surface 141 , forward and rearward ramp surfaces 142 and 143, and forward and rearward inclined surfaces 144 and 145 adjacent the keel ends 146 and 147.
  • a pair of positioning tabs 148 extend outward from the outer side wall 137 at the top of tapering grooves 149.
  • the cross member 135 has a relatively flat top surface 150 and an arcuate bottom surface 151. Extending vertically into the cross member 135 between the top and bottom surfaces 150 and 151 is a generally rectangular pocket 155 with a through opening 156 circumscribed by the slanting faces of inwardly projecting internal walls 157.
  • the internal walls 157 define an internal shoulder 158 having an upwardly-facing horizontal surface transverse to the internal walls 157 that supports the bottom edges of the reflector 32 when it is located within the pocket 155.
  • the sides of the opening 156 slant upwardly and radially outward such that the opening 156 has a cross-sectional area at its top end that is dimensionally larger than the cross-sectional area at its bottom end.
  • An air vent 159 is formed along the top edge of the internal wall 157 at each side thereof. Additional vents may be formed around any side surface of the internal shoulder.
  • the pocket 155 defining the shoulder 158 and opening 156 may extend laterally into the keel 134 as shown in Figs. 2 and 3.
  • the reflector 32 is located within the pocket 155 with the bottom edges of the reflector 32 located on the shoulder 158.
  • the reflector 32 is of the type described above and comprises a plastic body 70 and one or more retroreflective lenses 71.
  • the reflector body 70 has an attached butyl
  • elastomeric adhesive pad 73 trapezoidal high lateral end walls 74, and low axial walls 75 defining recessed transverse faces on which the retroreflective lenses 71 are mounted.
  • the retroreflective lenses 71 are mounted within the reflector 32 so that the lens face 77 is tilted about 30° relative to the bottom surface. While an angle of 30° relative to the roadway is preferred, this may be modified up to plus 20°.
  • the retroreflective lenses 71 may be colored white, yellow, red, blue or green. In some installations, where the marker 130 is to be seen from opposite directions, two retroreflective lenses 71 are used.
  • a reflector refers to an assembly of one or more retroreflective lenses and a retroreflector refers to an assembly of one or more smaller elements that reflect light back in the direction of incident light.
  • the reflector 32 described hereabove formed separately from the holder is approximately 2 inches long and 4 inches wide and is made of polycarbonate ("PC").
  • the adhesive coated elastomeric pad 73 is permanently factory bonded to the bottom of the reflector 32 to temporarily affix it to the holder 131 before installation of the marker 130 in the roadway.
  • the marker 130 is shown positioned in a section of pavement 180.
  • an arcuate cavity 181 having an H- shaped cross-section is cut into the pavement 180.
  • the laterally-spaced sections of the groove 181 a are cut to a depth sufficient to receive the keels 134, while the middle section 181 b is cut to a shallower depth sufficient to receive the cross member 135.
  • this is done with a 3-part circular diamond blade arrangement.
  • the blades for the narrow cuts have a diameter of 20 inches and the wider cut inner blades have a diameter of 18 inches, the large-diameter cut being about 1.5-2.0 inches deep.
  • Adhesive 185 is poured into the cavity 181 and the marker 130 is set into place.
  • the marker 130 is pressed into the cavity 181 until the positioning tabs 148 rest on the adjacent uncut pavement surface with the keel 134 positioned just above the cavity bottom (Fig. 9).
  • the adhesive 185 flows around the keel ends (Fig. 10), against the keels 134 and the arcuate bottom of the cross member 135, and through the pocket opening 156 into contact with the bottom of the reflector 32.
  • the marker 130 will thereby be securely held therein when the adhesive 185 cures.
  • a recessed roadway marker generally designated 230, is shown and is seen to include a plastic holder, generally designated 231 , and a reflector 32 of the type previously described above.
  • the reflector holder 231 which might be of unitary construction, has an upwardly facing recess, or pocket 233, defined by a peripheral shoulder 234 with a horizontal upwardly-facing surface 235, a pair of axially-spaced short end walls 236 and 237, and a pair of laterally-spaced, transverse, elevated side walls 238 and 239.
  • Positioning tabs 241 and 242 project outwardly from the upper portion of the side walls 238 and 239.
  • the tabs 241 and 242 might be narrower at the top of the side wall 238 and
  • Holder anchoring means or tabs 244 project outwardly away from the lower portions of the axial end walls 236 and 237 outside the pocket 233.
  • the anchoring means 244 may be comprised of many separate spaced apart projections extending off the holder 231 as shown or may be a single projecting flange extending across the entire width of each axial end wall.
  • Defined through the bottom 248 is a rectangular through opening 250.
  • the top of the opening 250 is dimensionally larger than the bottom of the opening 250 so that the slanting faces of the internal side wall 251 of the opening 250 are angled approximately 20° relative to vertical.
  • a cutout is formed in the shoulder 234 at the lateral sides to create shallow air relief vents 255. It is understood that a plurality of openings may be substituted for a single opening and openings may be of differing size and have side surfaces of differing angles.
  • the recessed marker 230 is shown positioned in a section of pavement 280.
  • a long line-of-sight groove 281 is cut longitudinally in the pavement 280 starting at zero depth where the groove 281 begins and ends and extending progressively to a deepest medial portion 281 a, such as where the one or more markers might be secured.
  • the line-of-sight groove 281 may have a length of 9 feet or longer.
  • a deeper, shorter secondary groove, or cavity 281 b is cut sufficiently deep to mount the marker 230 therein allowing the marker 230 to have a top clearance below the adjacent uncut pavement surface.
  • the arcuate secondary groove 281 b is slightly wider than the width of the holder 231.
  • An epoxy adhesive 285 or other adhesive (hereinafter the term "adhesive” shall mean to include any effective or suitable adhesive) is poured into the secondary groove 281 b and the marker 230 is set into place.
  • the marker 230 is pressed into the concave secondary groove 281 b until the positioning tabs 241 and 242 rest on the adjacent uncut pavement surface 280. This accurately locates the marker 230 vertically relative to the pavement surface.
  • the adhesive 285 flows around and over the anchoring tabs 244 and also up through the pocket opening 250 and tapered internal side walls 251 of the holder 231 into contact with the bottom of the reflector 32. The reflector 32 will then be securely held therein when the adhesive 285 cures and bonds to the butyl pad.
  • the adhesive is a structural or engineering adhesive that includes epoxies, polyesters, polyurethanes, acrylics, and the like.
  • the high laterally-spaced side walls 238 and 239 are situated below the level of the pavement where they will not be impacted by vehicular traffic or snowplows.
  • the low axially-spaced end walls 236 and 237 are at a level relative to the bottom of the reflective lenses 71 or such that the axially-spaced end walls 236 and 237 do not block the line-of-sight from 5 vehicles to the reflective lenses 71.
  • a reflector as disclosed herein needs to be replaced because it is worn or broken, it can be chiseled or pried out of the holder. After the pocket surface is cleaned or otherwise prepared by removing residual adhesive and other contaminants, new adhesive is applied and a new reflector is pressed io down into the adhesive forcing it to flow onto all surfaces and around corners and edges to bond the reflector to the holder.
  • top,” “bottom,” “forward,” “rear,” “rearward,” “upper,” “lower,” “inner,” “outer,” “side,” “lateral,” “end,” “height,” “width,” “length,” “horizontal,” “vertical,” and similar terms as used herein, have reference only to the structure shown in the drawings and are utilized only to BO facilitate describing the invention.
  • the terms and expressions employed herein have been used as terms of description and not of limitation.
  • the term “within” shall mean “to be partially or completely inside of; the term “axial” refers to a direction that is longitudinal and substantially straight; the term “transverse” refers to a direction other than the axial direction (e.g., orthogonal or nonorthogonal).

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Road Signs Or Road Markings (AREA)

Abstract

L'invention concerne des marqueurs de chaussée pouvant faire office de chasse-neige perfectionnés (130, 230) maintenus de manière fixe sur une chaussée (180, 280) par un adhésif (185, 285). Les marqueurs (130, 230) comportent un support (131, 231) et au moins un réflecteur agencé transversalement (32) permettant de rétro-réfléchir la lumière incidente provenant de phares de véhicules à l'approche. Les supports (131, 231) présentent une poche (155, 233) destinée à supporter le réflecteur (32). Une ou plusieurs ouvertures traversantes (156, 250) présentant des côtés inclinés (157, 251) sont définies dans le fond de la poche (155, 233) de sorte que lorsque le marqueur (131, 231) est installé dans un lit d'adhésif sur la chaussée (180, 280), un adhésif (185, 285) circule en contact avec le support (131, 231) et le fond du réflecteur (32) pour fixer ces deux derniers simultanément sur la chaussée (180, 280). Des réflecteurs (32) peuvent être remplacés par un simple burinage d'un ancien réflecteur de la poche de support (155, 233) pour créer une surface inférieure plate dans la poche sur laquelle un cordon d'adhésif à base de mastic (185, 285) est appliqué et un nouveau réflecteur (32) est ensuite installé. Cette nouvelle structure de marqueur s'applique à la fois à des marqueurs de chaussée en relief et en creux.
PCT/US2019/015263 2018-01-28 2019-01-25 Marqueur de chaussée pouvant faire office de chasse-neige Ceased WO2019148016A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201862622918P 2018-01-28 2018-01-28
US62/622,918 2018-01-28

Publications (1)

Publication Number Publication Date
WO2019148016A1 true WO2019148016A1 (fr) 2019-08-01

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Family Applications (1)

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PCT/US2019/015263 Ceased WO2019148016A1 (fr) 2018-01-28 2019-01-25 Marqueur de chaussée pouvant faire office de chasse-neige

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US (1) US20190234032A1 (fr)
WO (1) WO2019148016A1 (fr)

Families Citing this family (5)

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US11400956B2 (en) 2017-02-23 2022-08-02 Richard Anthony Bishel Vehicle guidance system
WO2019023371A1 (fr) * 2017-07-26 2019-01-31 Lambert David E Marqueur de route réfléchissant
US11242660B1 (en) * 2019-02-08 2022-02-08 Preform LLC Preformed reflective line marking for roadways and associated methods thereof
US11624165B2 (en) * 2020-08-14 2023-04-11 Eugene A. Giannotta Electrical power generating apparatus
US20250137209A1 (en) * 2023-11-01 2025-05-01 Ppg Industries Ohio, Inc. Methods for securing a pavement marker

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WO1999066133A1 (fr) * 1998-06-16 1999-12-23 Avery Dennison Corporation Dispositif de marquage de la chaussee limitant l'impact des pneus
US20090097915A1 (en) * 2007-10-11 2009-04-16 Pac-Tec, Inc. Low Profile Road Marker Protector
WO2014164627A1 (fr) * 2013-03-13 2014-10-09 Energy Absorption Systems, Inc. Dispositif de marque sur chaussée

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