Patent US5988942A successfully refreshed from Google Patents.
US5988942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Erosion control system
Assignee: Stewart Trustees Ltd
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Filing: 1997-03-11
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Granted: 1999-11-23
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Expires: 2017-03-11
Abstract
Abstract The erosion control system includes a plurality of erosion control blocks connected to one another by connectors to form an interconnected network of erosion control blocks conforming to the underlying terrain for erosion prevention. Each erosion control block includes a plurality of apertures therethrough each forming a side wall. The connector includes a pair of projecting legs for insertion into adjacent erosion control blocks. Each leg attachingly engages the side wall of the aperture of an erosion control block for connecting that erosion control block to an adjacent block. The legs include tapered extensions which frictionally engage the side wall, and in one embodiment of the erosion control block, the side wall includes a shoulder which engages the terminal end of the tapered extension. The erosion control block may have one end with convex arcuate surface and another end with a concave arcuate surface for providing an articulating joint between adjacent erosion control blocks. The erosion control block also may include a plurality of horizontal hydraulic grooves in the bottom planar surface of the block for hydrostatic relief.
Inventors
- 👤 Frank S. Atkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:04
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/04; E02B3/12; E02B3/14
Claims Analysis
Total Claims: 67
Claim 1
Independent Claim
146 words
An erosion control system comprising: a first erosion control member having a top and a base forming first sides and at least one aperture extending between said top and base forming a first wall; a second erosion control member having a top and a base forming second sides and at least one aperture extending between said top and base forming a second wall, said first and second erosion control members having a first position with said first and second sides juxtaposed and a second position with said first and second sides juxtaposed; and an expandable connector member having a first projection inserted into said aperture into engagement with said first wall said expandable connector member being expanded as said first and second erosion control members are moved from said first position to said second position to apply a force on said walls toward said first position.
Claim 2
Dependent Claim
146 words
An erosion control system comprising: a first erosion control member having a top and a base forming first sides and at least one aperture extending between said top and base forming a first wall; a second erosion control member having a top and a base forming second sides and at least one aperture extending between said top and base forming a second wall, said first and second erosion control members having a first position with said first and second sides juxtaposed and a second position with said first and second sides juxtaposed; and an expandable connector member having a first projection inserted into said aperture into engagement with said first wall said expandable connector member being expanded as said first and second erosion control members are moved from said first position to said second position to apply a force on said walls toward said first position.
Claim 3
Dependent Claim
17 words
The erosion control system of claim 1 wherein said expandable connector member is made of spring metal.
Claim 4
Dependent Claim
36 words
The erosion control system of claim 1 wherein said erosion control member is hexagonal in shape forming six sides with arcuate portions in between, said erosion control member having an aperture disposed adjacent each said side.
Claim 5
Dependent Claim
32 words
The erosion control system of claim 1 wherein said sides are tapered inwardly and upwardly from said base allowing first and second erosion control members to articulate with respect to each other.
Claim 6
Dependent Claim
44 words
The erosion control system of claim 1 further including a plurality of erosion control members made of concrete and connected to one another by expandable connector members to form an interconnected network of erosion control members conforming to the underlying terrain for preventing erosion.
Claim 7
Dependent Claim
16 words
The erosion control system of claim 1 wherein said expandable connector member is made of wire.
Claim 8
Dependent Claim
21 words
The erosion control system of claim 1 wherein said expandable connector member includes a support for the attachment of a cable.
Claim 9
Dependent Claim
32 words
The erosion control system of claim 1 wherein said first and second erosion control members include a hole extending between said top and base and a break groove communicating with said hole.
Claim 10
Dependent Claim
179 words
An erosion control system comprising: a first erosion control member having at least one aperture forming a first side wall; a second erosion control member having at least one aperture forming a second side wall, said first and second erosion control members having a first position with said first and second sides juxtaposed and a second position with said first and second sides not juxtaposed; and a connector member having a first projection inserted into said aperture of said first erosion control member and a second projection inserted into said aperture of said second erosion control member; said connector member being expanded to apply force to said side walls as said first and second erosion control members are moved from said first position to said second position; said connector member including a base from which said first and second projections project and said first and second erosion control members having opposing side walls opposite said first and second side walls, said projections having wing members attachingly engaging said side walls and biasing said projections against said opposing side walls.
Claim 11
Dependent Claim
179 words
An erosion control system comprising: a first erosion control member having at least one aperture forming a first side wall; a second erosion control member having at least one aperture forming a second side wall, said first and second erosion control members having a first position with said first and second sides juxtaposed and a second position with said first and second sides not juxtaposed; and a connector member having a first projection inserted into said aperture of said first erosion control member and a second projection inserted into said aperture of said second erosion control member; said connector member being expanded to apply force to said side walls as said first and second erosion control members are moved from said first position to said second position; said connector member including a base from which said first and second projections project and said first and second erosion control members having opposing side walls opposite said first and second side walls, said projections having wing members attachingly engaging said side walls and biasing said projections against said opposing side walls.
Claim 12
Dependent Claim
30 words
The erosion control system of claim 9 wherein said base includes a spacer and said base and projections bias said first erosion control member to said second erosion control member.
Claim 13
Dependent Claim
102 words
An erosion control system comprising: an erosion control member having at least one aperture forming a side wall; and a connector member having a first projection for insertion into said aperture and attachingly engaging said side wall and a second projection adapted for attaching said erosion control member to another erosion control member; said connector member including a base from which said first and second projections project, said projections having wing members which attachingly engage said side wall; each said wing member having a tapered extension from each said projection, said tapered extension having a terminal end which engages said side wall.
Claim 14
Dependent Claim
102 words
An erosion control system comprising: an erosion control member having at least one aperture forming a side wall; and a connector member having a first projection for insertion into said aperture and attachingly engaging said side wall and a second projection adapted for attaching said erosion control member to another erosion control member; said connector member including a base from which said first and second projections project, said projections having wing members which attachingly engage said side wall; each said wing member having a tapered extension from each said projection, said tapered extension having a terminal end which engages said side wall.
Claim 15
Dependent Claim
20 words
The erosion control system of claim 11 wherein said side wall includes a shoulder for engagement with said terminal end.
Claim 16
Dependent Claim
87 words
An erosion control system comprising: an erosion control member having at least one aperture forming a side wall; and a connector member having a first projection for insertion into said aperture and attachingly engaging said side wall and a second projection adapted for attaching said erosion control member to another erosion control member; said connector member including a base from which said first and second projections project, said projections having wing members which attachingly engage said side wall; said base including a recess for receiving a cable.
Claim 17
Dependent Claim
87 words
An erosion control system comprising: an erosion control member having at least one aperture forming a side wall; and a connector member having a first projection for insertion into said aperture and attachingly engaging said side wall and a second projection adapted for attaching said erosion control member to another erosion control member; said connector member including a base from which said first and second projections project, said projections having wing members which attachingly engage said side wall; said base including a recess for receiving a cable.
Claim 18
Dependent Claim
98 words
An erosion control system comprising: an erosion control member having at least one aperture forming a side wall; and a connector member having a first projection for insertion into said aperture and attachingly engaging said side wall and a second projection adapted for attaching said erosion control member to another erosion control member; said connector member including a base from which said first and second projections project, said projections having wing members which attachingly engage said side wall; said base including a spacer portion which serves as spacer between said erosion control member and another erosion control member.
Claim 19
Dependent Claim
98 words
An erosion control system comprising: an erosion control member having at least one aperture forming a side wall; and a connector member having a first projection for insertion into said aperture and attachingly engaging said side wall and a second projection adapted for attaching said erosion control member to another erosion control member; said connector member including a base from which said first and second projections project, said projections having wing members which attachingly engage said side wall; said base including a spacer portion which serves as spacer between said erosion control member and another erosion control member.
Claim 20
Dependent Claim
69 words
An erosion control system comprising: an erosion control member having at least one aperture forming a side wall and a connector member having a first projection for insertion into said aperture and attachingly engaging said side wall; and a second projection adapted for attaching said erosion control member to another erosion control member; each of said projections including a plurality of wing members for frictionally engaging said side wall.
Claim 21
Dependent Claim
69 words
An erosion control system comprising: an erosion control member having at least one aperture forming a side wall and a connector member having a first projection for insertion into said aperture and attachingly engaging said side wall; and a second projection adapted for attaching said erosion control member to another erosion control member; each of said projections including a plurality of wing members for frictionally engaging said side wall.
Claim 22
Dependent Claim
24 words
The erosion control system of claim 15 wherein said aperture is generally circular in cross-section and said wing members are generally circular in cross-section.
Claim 23
Dependent Claim
20 words
The erosion control system of claim 16 wherein said wing members are flexible and deflect upon insertion into said aperture.
Claim 24
Dependent Claim
15 words
The erosion control system of claim 15 wherein said connector member is made of plastic.
Claim 25
Dependent Claim
93 words
An erosion control system comprising: an erosion control member having at least one aperture forming a side wall; a connector member having a first projection for insertion into said aperture and attachingly engaging said side wall; and a second projection adapted for attaching said erosion control member to another erosion control member; said erosion control member having a hexagonal shape forming six sides with arcuate portions in between said erosion control member having an aperture disposed adjacent each said side; and each of said sides including a chamfered base for receiving a cable.
Claim 26
Dependent Claim
93 words
An erosion control system comprising: an erosion control member having at least one aperture forming a side wall; a connector member having a first projection for insertion into said aperture and attachingly engaging said side wall; and a second projection adapted for attaching said erosion control member to another erosion control member; said erosion control member having a hexagonal shape forming six sides with arcuate portions in between said erosion control member having an aperture disposed adjacent each said side; and each of said sides including a chamfered base for receiving a cable.
Claim 27
Dependent Claim
66 words
An erosion control system comprising: first and second erosion control members having top and bottom surfaces, opposing ends, and opposing sides, one said end having a convex arcuate surface extending between said top and bottom surfaces and the other said end having a concave arcuate surface extending between said top and bottom surfaces allowing said first and second erosion control members to articulate at adjacent ends.
Claim 28
Dependent Claim
66 words
An erosion control system comprising: first and second erosion control members having top and bottom surfaces, opposing ends, and opposing sides, one said end having a convex arcuate surface extending between said top and bottom surfaces and the other said end having a concave arcuate surface extending between said top and bottom surfaces allowing said first and second erosion control members to articulate at adjacent ends.
Claim 29
Dependent Claim
38 words
The erosion control system of claim 20 wherein said concave arcuate surface of said first erosion control member forms a pair of lips for restricting the vertical movement of said convex arcuate surface on second erosion control member.
Claim 30
Dependent Claim
42 words
The erosion control system of claim 20 wherein each said bottom surface is adjacent the ground surface and has at least one groove extending along said bottom surface for the passage of water between the ground surface and said erosion control member.
Claim 31
Dependent Claim
26 words
The erosion control block of claim 22 wherein said erosion control member includes at least one vertical aperture in communication with said at least one groove.
Claim 32
Dependent Claim
44 words
The erosion control system of claim 20 further including a spacer disposed between said first and second erosion control members forming a space therebetween and at least one aperture extending between said opposing sides and through said erosion control members for receiving a cable.
Claim 33
Dependent Claim
20 words
The erosion control system of claim 24 wherein said spacer includes a hole therethrough for the passage of said cable.
Claim 34
Dependent Claim
27 words
The erosion control system of claim 25 further including a second holy through said spacer receiving another cable extending between said first and second erosion control members.
Claim 35
Dependent Claim
223 words
An erosion control system for positioning upon the ground for controlling, erosion comprising: a first erosion control member having first and second surfaces forming first and second sides and at least one first aperture passing through said first erosion control member from said first side to said second side, said second surface being adjacent the ground; a second erosion control member having third and fourth surfaces forming third and fourth sides and at least one second aperture passing through said second erosion control member from said third side to said fourth side, said fourth surface being adjacent the ground; said first and second erosion control members having a first position with said first and third sides juxtaposed and a second position with said first and third sides not juxtaposed; and a connector member having a first projection, a base, and a second projection, said first projection extending from said base in a first direction and said second projection extending from said base in an opposite direction, said first projection being inserted into said fir aperture and attachingly engaging said first erosion control member and said second projection being inserted into said second aperture and attaching said first erosion control member to said second erosion control member, said base flexing as said erosion control members move from said second position to said first position.
Claim 36
Dependent Claim
223 words
An erosion control system for positioning upon the ground for controlling, erosion comprising: a first erosion control member having first and second surfaces forming first and second sides and at least one first aperture passing through said first erosion control member from said first side to said second side, said second surface being adjacent the ground; a second erosion control member having third and fourth surfaces forming third and fourth sides and at least one second aperture passing through said second erosion control member from said third side to said fourth side, said fourth surface being adjacent the ground; said first and second erosion control members having a first position with said first and third sides juxtaposed and a second position with said first and third sides not juxtaposed; and a connector member having a first projection, a base, and a second projection, said first projection extending from said base in a first direction and said second projection extending from said base in an opposite direction, said first projection being inserted into said fir aperture and attachingly engaging said first erosion control member and said second projection being inserted into said second aperture and attaching said first erosion control member to said second erosion control member, said base flexing as said erosion control members move from said second position to said first position.
Claim 37
Dependent Claim
32 words
The erosion control system of claim 22 wherein said first and third sides have a recess in which said aperture passes and in which said base of said connector member is housed.
Claim 38
Dependent Claim
61 words
The erosion control system of claim 28 wherein first said erosion control member includes at least one groove extending along said second surface of said first erosion control member for the passage of water between said first erosion control member and the ground and a hole extending between said first and second surfaces in communication with said at least one groove.
Claim 39
Dependent Claim
31 words
The erosion control system of claim 27 wherein said base of said connector member forms a spacer portion for spacing said first erosion control member from said second erosion control member.
Claim 40
Dependent Claim
29 words
The erosion control system of claim 22 wherein said base include first members attached to said first and second projections and a second member extending between said first members.
Claim 41
Dependent Claim
20 words
The erosion control system of claim 31 wherein said second member is not co-axial with said first and second projections.
Claim 42
Dependent Claim
17 words
The erosion control system of claim 31 wherein said first members are connected to support a cable.
Claim 43
Dependent Claim
18 words
The erosion control system of claim 31 wherein said first members extend over said first and second apertures.
Claim 44
Dependent Claim
32 words
The erosion control system of claim 27 wherein said first and second projections include extending accordion members which engage said first and second erosion control members at said first and second apertures.
Claim 45
Dependent Claim
22 words
The erosion control system of claim 35 wherein said accordion members are disc-like members extending outwardly from said first and second projections.
Claim 46
Dependent Claim
126 words
An erosion control system for positioning upon the ground for controlling erosion comprising: an erosion control member having first and second surfaces forming a plurality of sides and at least one aperture passing through said erosion control member from one side to an opposite side, said second surface being adjacent the ground; and a connector member having a first projection extending in a first direction and a second projection extending in an opposite direction, said first projection being inserted into said aperture and attachingly engaging said erosion control member; and said second projection adapted for attaching said erosion control member to another erosion control member; and a cable passing through said aperture and through a hole in said connector member for supporting said erosion control member.
Claim 47
Dependent Claim
126 words
An erosion control system for positioning upon the ground for controlling erosion comprising: an erosion control member having first and second surfaces forming a plurality of sides and at least one aperture passing through said erosion control member from one side to an opposite side, said second surface being adjacent the ground; and a connector member having a first projection extending in a first direction and a second projection extending in an opposite direction, said first projection being inserted into said aperture and attachingly engaging said erosion control member; and said second projection adapted for attaching said erosion control member to another erosion control member; and a cable passing through said aperture and through a hole in said connector member for supporting said erosion control member.
Claim 48
Dependent Claim
24 words
The erosion control system of claim 37 wherein said sides are tapered allowing adjacent erosion control members to articulate with respect to each other.
Claim 49
Dependent Claim
118 words
An erosion control system comprising: an erosion control member having at least one aperture forming a side wall and a connector member having a first projection for insertion into said aperture and attachingly engaging said side wall; and a second projection adapted for attaching said erosion control member to another erosion control member; a plurality of erosion control members connected to one another by connector members to form an interconnected network of erosion control members conforming to the underlying terrain for preventing erosion: said connector member including a base from which a third projection projects whereby said first; second, and third projections attach said erosion control member, said another erosion control member, and a third erosion control member.
Claim 50
Dependent Claim
118 words
An erosion control system comprising: an erosion control member having at least one aperture forming a side wall and a connector member having a first projection for insertion into said aperture and attachingly engaging said side wall; and a second projection adapted for attaching said erosion control member to another erosion control member; a plurality of erosion control members connected to one another by connector members to form an interconnected network of erosion control members conforming to the underlying terrain for preventing erosion: said connector member including a base from which a third projection projects whereby said first; second, and third projections attach said erosion control member, said another erosion control member, and a third erosion control member.
Claim 51
Independent Claim
67 words
A method of producing an erosion control block comprising: pouring concrete into a production module for forming the block on one of its sides with the top and bottom planar surfaces of the block in the vertical position; forming a plurality of grooves across the bottom planar surface of the block; and removing the block by pushing the block out of the production module along the grooves.
Claim 52
Independent Claim
67 words
A method of producing an erosion control block comprising: pouring concrete into a production module for forming the block on one of its sides with the top and bottom planar surfaces of the block in the vertical position; forming a plurality of grooves across the bottom planar surface of the block; and removing the block by pushing the block out of the production module along the grooves.
Claim 53
Dependent Claim
42 words
The method of claim 40 further including forming a plurality of blocks in the production mold as concrete is poured into the production mold and extending core bars between adjacent blocks to form apertures along one side of the erosion control blocks.
Claim 54
Dependent Claim
203 words
An erosion control system comprising: a first erosion control member having first and second surfaces forming first sides and at least one aperture extending between said first and second surfaces forming a first wall; a second erosion control member having first and second surfaces forming second sides and at least one aperture extending between said first and second surfaces forming a second wall, said first and second erosion control members having a first position with said first and second sides juxtaposed and a second position with said first and second sides not juxtaposed; a connector member having a first projection for insertion into said aperture of said first erosion control member and attachingly engaging said side wall and a second projection for insertion into said aperture of said second erosion control member and attachingly engaging said side wall; and said projections prior to insertion into said apertures being separated by a distance less than the distance between the apertures of said first erosion control member and said second erosion control member such that the insertion of said projections into said apertures expands said distance to create a constant clamping force to bias said first erosion control member to said second erosion control member.
Claim 55
Dependent Claim
203 words
An erosion control system comprising: a first erosion control member having first and second surfaces forming first sides and at least one aperture extending between said first and second surfaces forming a first wall; a second erosion control member having first and second surfaces forming second sides and at least one aperture extending between said first and second surfaces forming a second wall, said first and second erosion control members having a first position with said first and second sides juxtaposed and a second position with said first and second sides not juxtaposed; a connector member having a first projection for insertion into said aperture of said first erosion control member and attachingly engaging said side wall and a second projection for insertion into said aperture of said second erosion control member and attachingly engaging said side wall; and said projections prior to insertion into said apertures being separated by a distance less than the distance between the apertures of said first erosion control member and said second erosion control member such that the insertion of said projections into said apertures expands said distance to create a constant clamping force to bias said first erosion control member to said second erosion control member.
Claim 56
Dependent Claim
148 words
An erosion control system comprising: a first erosion control member having at least one aperture forming a first side walls; a second erosion control member having at least one aperture forming a second side wall, said first and second erosion control members having a first position with said first and second sides juxtaposed and a second position with said first and second sides not juxtaposed; and a connector member having a first projection inserted into said aperture of said first erosion control member and a second projection inserted into said aperture of said second erosion control member; said connector member being expanded to apply force to said side walls as said first and second erosion control members are moved from said first position to said second position; and said connector member further including a base and wing members extending at an angle from said projections toward said base.
Claim 57
Dependent Claim
148 words
An erosion control system comprising: a first erosion control member having at least one aperture forming a first side walls; a second erosion control member having at least one aperture forming a second side wall, said first and second erosion control members having a first position with said first and second sides juxtaposed and a second position with said first and second sides not juxtaposed; and a connector member having a first projection inserted into said aperture of said first erosion control member and a second projection inserted into said aperture of said second erosion control member; said connector member being expanded to apply force to said side walls as said first and second erosion control members are moved from said first position to said second position; and said connector member further including a base and wing members extending at an angle from said projections toward said base.
Claim 58
Dependent Claim
138 words
An erosion control system comprising: a first erosion control member having at least one aperture forming a first side wall; a second erosion control member having at least one aperture forming a second side wall, said first and second erosion control members having a first position with said first and second sides juxtaposed and a second position with said first and second sides not juxtaposed; and a connector member having a first projection inserted into said aperture of said first erosion control member and a second projection inserted into said aperture of said second erosion control member; said connector member being expanded to apply force to said side walls as said first and second erosion control members are moved from said first position to said second position; and said connector member including a base having an expansion portion.
Claim 59
Dependent Claim
138 words
An erosion control system comprising: a first erosion control member having at least one aperture forming a first side wall; a second erosion control member having at least one aperture forming a second side wall, said first and second erosion control members having a first position with said first and second sides juxtaposed and a second position with said first and second sides not juxtaposed; and a connector member having a first projection inserted into said aperture of said first erosion control member and a second projection inserted into said aperture of said second erosion control member; said connector member being expanded to apply force to said side walls as said first and second erosion control members are moved from said first position to said second position; and said connector member including a base having an expansion portion.
Claim 60
Dependent Claim
135 words
An erosion control system for positioning upon the ground for controlling erosion comprising: an erosion control member having first and second surfaces forming a plurality of sides and at least one aperture passing through said erosion control member from one side to an opposite side, said second surface being adjacent the ground; and a connector member having a first projection extending in a first direction and a second projection extending in an opposite direction, said first projection being inserted into said aperture and attachingly engaging said erosion control member; and said second projection adapted for attaching said erosion control member to another erosion control member; said connector member includes a spacer portion for spacing said erosion control member from said another erosion control member; and said spacer member including an aperture for receiving a cable.
Claim 61
Dependent Claim
135 words
An erosion control system for positioning upon the ground for controlling erosion comprising: an erosion control member having first and second surfaces forming a plurality of sides and at least one aperture passing through said erosion control member from one side to an opposite side, said second surface being adjacent the ground; and a connector member having a first projection extending in a first direction and a second projection extending in an opposite direction, said first projection being inserted into said aperture and attachingly engaging said erosion control member; and said second projection adapted for attaching said erosion control member to another erosion control member; said connector member includes a spacer portion for spacing said erosion control member from said another erosion control member; and said spacer member including an aperture for receiving a cable.
Claim 62
Dependent Claim
145 words
An erosion control system comprising: a first erosion control member having at least one aperture forming a first side wall; a second erosion control member having at least one aperture forming a second side wall, said first and second erosion control members having a first position with said first and second sides juxtaposed and a second position with said first and second sides not juxtaposed; and a connector member having a first projection inserted into said aperture of said first erosion control member and a second projection inserted into said aperture of said second erosion control member; said connector member being expanded to apply force to said side walls as said first and second erosion control members are moved from said first position to said second position; and said connector member including a third projection inserted into an aperture of a third erosion control member.
Claim 63
Dependent Claim
145 words
An erosion control system comprising: a first erosion control member having at least one aperture forming a first side wall; a second erosion control member having at least one aperture forming a second side wall, said first and second erosion control members having a first position with said first and second sides juxtaposed and a second position with said first and second sides not juxtaposed; and a connector member having a first projection inserted into said aperture of said first erosion control member and a second projection inserted into said aperture of said second erosion control member; said connector member being expanded to apply force to said side walls as said first and second erosion control members are moved from said first position to said second position; and said connector member including a third projection inserted into an aperture of a third erosion control member.
Claim 64
Dependent Claim
144 words
An erosion control system comprising: a first erosion control member having at least one aperture forming a first side wall; a second erosion control member having at least one aperture forming a second side wall, said first and second erosion control members having a first position with said first and second sides juxtaposed and a second position with said first and second sides not juxtaposed; and a connector member having a first projection inserted into said aperture of said first erosion control member and a second projection inserted into said aperture of said second erosion control member; said connector member being expanded to apply force to said side walls as said first and second erosion control members are moved from said first position to said second position; and said connector member including a plurality of winged members projecting from said first and second projections.
Claim 65
Dependent Claim
144 words
An erosion control system comprising: a first erosion control member having at least one aperture forming a first side wall; a second erosion control member having at least one aperture forming a second side wall, said first and second erosion control members having a first position with said first and second sides juxtaposed and a second position with said first and second sides not juxtaposed; and a connector member having a first projection inserted into said aperture of said first erosion control member and a second projection inserted into said aperture of said second erosion control member; said connector member being expanded to apply force to said side walls as said first and second erosion control members are moved from said first position to said second position; and said connector member including a plurality of winged members projecting from said first and second projections.
Claim 66
Dependent Claim
123 words
An erosion control system comprising: first and second erosion control members having top and bottom surfaces, opposing ends, and opposing sides, one said end having a convex arcuate surface extending between said top and bottom surfaces and the other said end having a concave arcuate surface extending between said top and bottom surfaces allowing said first and second erosion control members to articulate at adjacent ends; at least one aperture extending between the said opposing sides and through said erosion control members for receiving a cable; a spacer between said first and second erosion control members at said aperture; said spacer includes a hole therethrough for the passage of said cable; and said spacer including a second hole for receiving a hoisting cable.
Claim 67
Dependent Claim
123 words
An erosion control system comprising: first and second erosion control members having top and bottom surfaces, opposing ends, and opposing sides, one said end having a convex arcuate surface extending between said top and bottom surfaces and the other said end having a concave arcuate surface extending between said top and bottom surfaces allowing said first and second erosion control members to articulate at adjacent ends; at least one aperture extending between the said opposing sides and through said erosion control members for receiving a cable; a spacer between said first and second erosion control members at said aperture; said spacer includes a hole therethrough for the passage of said cable; and said spacer including a second hole for receiving a hoisting cable.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-11-22 | 2003-05-24 | 2003-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-22 | 2007-05-24 | 2007-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-22 | 2011-05-24 | 2011-11-23 | $7700.00 | Window Closed / Lapsed |