Erosion control bag
OwnerGeorge Hepworth, Joseph F. Kellyinventors
Life of this patent
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Abstract
An erosion control bag of dark-colored fabric for underwater use and light-colored for other use is disclosed having a porosity of 10 to 35 cubic feet per minute so that air and water may escape from the bag as water and a filler are pumped into the bag. The bag has a self-sealing opening so that it can be filled while positioned in situ below water level.
Claims10
An erosion control bag comprising a bag of dark-colored fabric having a length substantially greater than its width, and closed at both ends, said fabric having a porosity of 10 to 35 cubic feet per minute, means defining a nozzle opening spaced from the ends of the bag and through which a nozzle may extend to introduce water and a filler, said nozzle opening being closer to one end of the bag than the other, said means including two overlapping layers of fabric stitched together by spaced sets of stitching leaving an unstitched portion which defines the nozzle opening in the central portion spaced from the side edges of the bag.
An erosion control bag of nylon fabric, said bag having a length approximately twice its width, both ends of said bag being closed, said fabric having a porosity of between 10 to 35 cubic feet per minute, means defining a nozzle opening spaced from one end of said bag by a distance of between 8 and 30 inches, two overlapping layers of said fabric being stitched together by spaced sets of stitching, thereby leaving an unstitched central portion which defines the nozzle opening, said nozzle opening having a length of approximately 8 inches, side edges of said bag being stitched together, all of said stitching being double lock stitches with 4 to 61/2 stitches per inch.
An erosion control device comprising a bag made from a synthetic fabric having a length substantially greater than its width, said fabric being woven from filaments or bundles of filaments having a discrete coating of a polymeric plastic material, said bag being closed at both ends and having seams along its side edges, said bag being made from a fabric having a porosity of 10 to 50 cubic feet per minute, means defining a nozzle opening spaced from an end of said bag through which water and a filler may be pumped into the bag, said means including two overlapping layers of fabric joined together by spaced sets of seams leaving a portion which defines a nozzle opening.
Dependencies are inferred from the claim text.