Environmental barrier device

Details Environmental barrier device Environmental barrier device

2006-11-03

2010-06-15

Bagnell, David J (Department: 3672)

Hydraulic and earth engineering

Earth treatment or control

Ground stabilization or reinforcement

C405S302700, C405S302400, C405S015000, C256S012500

Reexamination Certificate

active

07736097

ABSTRACT:
An environmental barrier device includes a first member and a second member. The first member may be constructed of a first sheet material. The first member may have a memory retaining shape. The first member may be normally oriented in a generally upright position and resiliently deflectable from the generally upright position. The second member may be secured to the first member. The second member may be constructed of a second sheet material. The second sheet material may be flexible and may define a filter media. The filter media may allow the passage of water and preclude the passage of dirt and silt. The environmental barrier device includes a lower portion for positioning below ground level and an upper portion for positioning above ground level. The environmental barrier device may be driven over or otherwise deflected from a generally upright orientation and the first member may automatically return the environmental barrier device to the generally upright orientation.

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