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US 2003/0228192 A1Published application
Revetment useful to line stream bed and assembly of said revetments
OwnerJan Erik Janssoninventor
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OwnerJan Erik Janssoninventor
Estimating the term…
A revetment made wholly or predominantly from concrete, useful to line a stream bed, having upper and lower surfaces, and having upstream and downstream edges, has, for each upstream edge, an upstream bevel, which intersects the upper surface and which intersects said upstream edge. The revetment has an array of holes extending between the upper and lower surfaces. Each hole has a lateral wall flaring outwardly in a downstream direction from a circular mouth at the lower wall to an elongate mouth at the upper wall. Each upstream or downstream edge is stepped so as to define an upper or lower flange. In an assembly of such revetments, which may be connected to one another, as by cables, each of at least some of the upper flanges overlies one of the lower flanges.
A revetment made wholly or predominantly from concrete, useful to line a stream bed, having upper and lower surfaces, having upstream and downstream edges, and having, for each upstream edge, an upstream bevel, which intersects the upper surface and which intersects said upstream edge.
A revetment made wholly or predominantly from concrete, useful to line a stream bed, having upper and lower surfaces, having upstream and downstream edges, which include two upstream edges, and having, for each upstream edge, an upstream bevel, which intersects the upper surface and which intersects said upstream edge.
A revetment made wholly or predominantly from concrete, useful to line a stream bed, having upper and lower surfaces, and having upstream and downstream edges, each of which is stepped so as to define an upper or lower flange.
A revetment made wholly or predominantly from concrete, useful to line a stream bed, and having an upper surface, a lower surface, two downstream edges, each of which is stepped so as to define an upper flange, and two upstream edges, each of which is stepped so as to define a lower flange.
Dependencies are inferred from the claim text.