Retro-reflective raised pavement marker and a method of manufacturing thereof
Assignee3M Innovative Properties Company
InventorsSanthosh Kumar RAJENDRAN, Vipulkumar Himatbhai PRAJAPATI, Govindarajan GANESAN
Life of this patent
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Abstract
Embodiments of the present disclosure relate to a retro-reflective raised pavement marker (100) and a method of manufacturing (200) thereof. The marker (100) comprises a marker body (1), at least one intermediate frame (6), and at least one retro-reflective lens (7) such that the marker body (1) completely houses the at least one intermediate frame (6) and the at least one retro-reflective lens (7). Further, the manufactured marker (100) is durable, effective and has better retention with the ground surface and better load distribution to the ground.
Claims15
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;
- and
- at least one retro-reflective lens fixed on the at least one intermediate frame.
A method of manufacturing a retro-reflective raised pavement marker, the method comprising the steps of:
- producing a marker body with a top wall, a bottom wall, and a plurality of side walls such that at least one of 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;
- forming a plurality of ridges on the top wall and a plurality of undercut recesses on the bottom wall;
- forming a lip portion, on the at least one of the plurality of side walls, 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;
- fixing at least one intermediate frame, having weld lines, to the recessed portion of the at least one of the plurality of side walls;
- and
- fixing at least one retro-reflective lens to the at least one intermediate frame.
Dependencies are inferred from the claim text.