Method and apparatus for forming new and retrofit detectable...

Road structure – process – or apparatus – Process – In situ treatment of earth or roadway

Reexamination Certificate

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Details

C249S002000, C249S188000, C264S032000

Reexamination Certificate

active

06951435

ABSTRACT:
Method and apparatus suited for forming retrofit detectable warning surfaces on existing surfaces or new warning surfaces. Apparatus includes a tool in the form of a stamp having one or more dome-shaped volumes that may be truncated domes. Dome-shaped volumes may have interior beginning on a bottom side of a stamp and the truncated portion may be defined by a hole provided in a top side of the stamp. Thanks to the hole, when the stamp is removed from the unhardened concrete, the hole functions as a pressure-relief or pressure-equalizing valve eliminating undesirable distortion of the unhardened concrete and ensuring formation of desired dome-shaped concrete projections.

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28 C.F.R. Ch. 1 (Jul. 1, 1999 Edition), p. 53, “4.29.2 Detectable Warnings” (1 page). Dept. of Justice Pt. 36, App. A.
Unknown, 3 page document discussing New York Department of Transportation (NYDOT) regulations, Figure X02.5 O Dome Spacing, Fig. X02.5P Dome Alignment (3 pages, pre-Aug. 2002).

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