Patent ID: 11952732
Assignee: 3M INNOVATIVE PROPERTIES COMPANY
Field: Civil engineering (Other fields)
Classification: CPC E  B  G | IPC B  E  G

Claim 0:
1. A retro-reflective raised pavement marker, the marker comprising:
a marker body having a top wall, a bottom wall, and a plurality of side walls, wherein
the top wall comprises a plurality of ridges,
the bottom wall comprises a plurality of undercut recesses,
the plurality of side walls connect edges of the top wall to edges of the bottom wall at an acute angle with respect to the top wall, and
at least one of the plurality of side walls comprises a lip portion at the edges of the bottom wall such that the ridges and the lip portion form a recessed portion on the at least one of the plurality of side walls;

at least one intermediate frame, having weld lines, fixed to the recessed portion on the at least one of the plurality of side walls, wherein the weld lines are inter-webbed to each other; and
at least one retro-reflective lens fixed on the at least one intermediate frame.