Drainage element of ovate shape and method of making

Details Drainage element of ovate shape and method of making Drainage element of ovate shape and method of making

2006-08-18

2010-06-29

Bagnell, David J (Department: 3672)

Hydraulic and earth engineering

Drainage or irrigation

Porous or apertured pipe, flume, or tileway

C405S036000, C405S043000

Reexamination Certificate

active

07744308

ABSTRACT:
The drainage element is formed of a tubular mesh that is filled with loose fill elements of polymeric material, deformed into an ovate cross-sectional shape and cured at an ambient temperature to hold the elements in a compacted state to define a rigid drainage element. The drainage element may be fabricated with a perforated pipe to be joined to other like drainage elements in a drainage system.

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patent: 6315493 (2001-11-01), Malone et al.
patent: 6641335 (2003-11-01), Allard
patent: 6854924 (2005-02-01), Ring
patent: 2004/0057797 (2004-03-01), Ring
patent: 2005/0063781 (2005-03-01), Bussey et al.
patent: 60059230 (1985-04-01), None

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