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US 6,848,866 B1Granted
Sediment control
OwnerJohn H. McGinninventor
Life of this patent
Estimating the term…
Abstract
A sediment control roll includes a threshold member having large apertures therethrough, a hollow sediment collection chamber, and an outflow filter having small apertures therethrough. The sediment control roll can be used to collect sediment in runoff from a construction site, or to reduce removal of sediment from an existing mass of soil, sand or other sediment. The sediment control roll can for example be made by rolling up extruded polymeric netting with filter cloth attached thereto.
Claims26
A sediment control roll which comprises
- 1) an elongate threshold member which comprises a melt-extruded polymeric netting composed of a plurality of polymeric strands which
- (a) define a plurality of substantially identical apertures, each of which has an area of 0.03 to 0.16 in2 and a minimum dimension of 0.015 to 0.4 in., and
- (b) have a solid surface area which is from 25 to 65% of the total area of the netting;
- 2) an elongate outflow member which comprises a melt-extruded polymeric netting composed of a plurality of polymeric strands which
- (a) define a plurality of substantially identical apertures, each of which has an area of 0.03 to 0.16 in2 and a minimum dimension of 0.015 to 0.4 in., and
- (b) have a solid surface area which is from 25 to 65% of the total area of the netting;
- and
- 3) an elongate outflow filter which
- (i) is secured to the outflow member, and
- (ii) has a mesh size of 80 to 500 micron;
- the sediment control roll comprising a hollow, elongate sediment collection chamber which (i) lies between the threshold member and the outflow member and (ii) has an unobstructed volume which is at least 80% of the total volume of the sediment control roll.
8 more elements
A sediment control roll which comprises
- 1) an elongate threshold member which is composed of two overlapping layers of polymeric netting;
- 2) an elongate outflow member which is composed of two overlapping layers of polymeric netting;
- 3) a location member which extends from the outflow member;
- the threshold member, the outflow member and the location member being different parts of a single piece of melt-extruded polymeric netting composed of a plurality of polymeric strands which
- (a) define a plurality of substantially identical apertures, each of which has an area of 0.03 to 0.16 in2;
- and
- (b) have a solid surface area which is from 25 to 65% of the total area of the netting;
- and
- 4) an elongate outflow filter which
- (i) is secured between the overlapping layers of the outflow member and
- (ii) has a mesh size of 80 to 500 micron;
- the sediment control roll comprising a hollow, elongate sediment collection chamber which (i) lies between the threshold member and the outflow member and (ii) has an unobstructed volume which is at least 80% of the total volume of the sediment control roll.
9 more elements
Dependencies are inferred from the claim text.