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US 2011/0217128 A1Published application
Controlling sediment
AssigneeErtec Environmental Systems LLC
InventorsJohn H. McGinn, Vincent P. Morris
Life of this patent
Estimating the term…
Abstract
Sediment control devices include a planar apertured threshold member, a planar apertured outflow member, and a planar filter member between the threshold and outflow members. The members lie in parallel planes, and there is substantially no hollow space between the threshold member and the outflow member.
Claims20
A sediment control device (SCD) which comprises
- (1) a substantially planar elongate threshold member,
- (2) a substantially planar elongate outflow member, and
- (3) a substantially planar elongate filter member between the threshold and outflow members,
- the threshold, outflow and filter members lying in parallel planes and being secured together so that there is substantially no hollow space between the threshold member and the outflow member,
- each of the threshold and outflow members being apertured sheet materials having multiple relatively large apertures therethrough, the apertures having an area of 0.01 to 1.0 in.2, and
- the filter member having a mesh size of 80 to 600 micron.
3 more elements
A sediment control device (SCD) which consists essentially of
- (1) a substantially planar elongate threshold member,
- (2) a substantially planar elongate outflow member, and
- (3) a substantially planar elongate filter member between the threshold and outflow members,
- the threshold, outflow and filter members lying in parallel planes and being secured together so that there is substantially no hollow space between the threshold member and the outflow member,
- each of the threshold and outflow members being composed of an apertured sheet material comprising a multiplicity of polymeric strands and having multiple relatively large apertures therethrough, the apertures having an area of 0.01 to 1.0 in.2, and the filter member having a mesh size of 80 to 600 micron.
2 more elements
Dependencies are inferred from the claim text.