Hydraulic and earth engineering – Earth treatment or control – Ground stabilization or reinforcement
Reexamination Certificate
2006-01-17
2009-06-09
Lagman, Frederick L (Department: 3672)
Hydraulic and earth engineering
Earth treatment or control
Ground stabilization or reinforcement
C405S015000, C405S019000, C405S032000, C210S170030
Reexamination Certificate
active
07544016
ABSTRACT:
Sediment collection devices (SCDs) which can be used to collect sediment from sediment-bearing liquid, for example runoff from construction sites, and which have improved durability, particularly when wheeled vehicles pass over them. The SCDs include a horizontal location member; and a generally vertical member comprising (1) a filter which has relatively small apertures therethrough, and (2) threshold and outflow members each of which have relatively large apertures therethrough and which together provide a sediment control chamber (SCC) between them. The height of the SCC is at least 1.5 times its width; and/or the SCC is shaped so that a vehicle wheel approaching the SCD contacts the SCD at a defined height and angle; and/or one or both of the threshold member and the outflow member has a bending or stiffening line such that different parts of the SCD respond differently to bending forces. Precursors and methods for making such SCDs are described.
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McGinn John H.
Morris Vincent P.
Ertec Environmental Systems LLC
Lagman Frederick L
Richardson T. H. P.
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