Hydraulic and earth engineering – Drainage or irrigation – Porous or apertured pipe – flume – or tileway
Reexamination Certificate
2006-04-21
2009-06-30
Mayo-Pinnock, Tara (Department: 3671)
Hydraulic and earth engineering
Drainage or irrigation
Porous or apertured pipe, flume, or tileway
C405S036000, C052S302100, C428S015000, C428S358000
Reexamination Certificate
active
07553104
ABSTRACT:
Synthetic rocks are used as a substitute for natural gravel to fill in a water drainage trench. The synthetic rocks may be used around perforated drain tiles in a basement water drainage system, or they may be used without such tile. The synthetic rocks may be of a size and shape that mimics the natural rock they replace, but they are preferably significantly lighter in weight. The synthetic rocks may alternatively be tubular or cubic shaped, for example, and may include one or more lumens or other passageways to facilitate the flow of water through and/or around the rocks. The synthetic rocks may be provided in mesh bags to facilitate placement in a water drainage trench.
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Pit & Quarry—Equipment-Operations-Solutions; Synthetic aggregate, Jul. 1, 2005 By David Shulman.
Better Roads—For the Government/Contractor Project Team; Jun. 2005; Synthetic Aggregates Promise New Options for Engineers by Tom Kuennen.
Mayo-Pinnock Tara
Woodard Emhardt Moriarty McNett & Henry LLP
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