| 摘要 |
<p>A retroreflective pavement marker has shell-like hollow housing 22 with or without downwardly projecting ribs), a top wall 28, a downwardly projecting stud 24 formed integral as a unit with the housing, and thermoplastic retroreflectors 26 having retroreflective elements visible through apertures in the housing. An epoxy based filler 47 holds the reflector plate (or reflective plates) in place in the housing by solidly binding to the housing, stud and reflector plate (or reflective plates), adding impact resistance to the marker. The stud has outwardly extending vanes 36 running along its longitudinal axis, creating an X-shaped cross-section. The vanes have outwardly facing flat surfaces 38 and rounded surfaces therebetween. The marker is made by forming the housing (with or without ribs) and stud, placing the reflector plate (or reflective plates) in the housing, dispensing liquid fill material in the housing, and hardening the fill material.</p> |
