Storm sewer overflow control device
First Claim
1. A storm sewer overflow control device for controlling runoff surge flows from a first pipe into a generally normally oriented second pipe, comprising:
- an engagement portion configured for insertion into the second pipe;
a flow control portion attachable to said engagement portion and configured for receiving runoff surge flow flowing down the storm drain and slowing the flow for entry into the second pipe through said engagement portion;
said flow control portion including a cowl attachable to a flange and having a sidewall defining an inlet;
said engagement portion having a proximal end and a distal end, and at least one component being radially expandable to create a friction fit against an interior surface of the second pipe for retaining said engagement portion in the second pipe;
clog release means for releasing debris trapped between said flow control portion and said engagement portion, said clog release means includes at least one door formed in said sidewall, said door defining an opening bordered by said cowl and said flange for temporarily increasing the flow of water through said device.
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Accused Products
Abstract
A storm sewer overflow control device for controlling runoff surge flows from a generally vertically oriented storm drain into a generally horizontally oriented storm sewer pipe includes an engagement portion configured for insertion into the storm sewer pipe, a flow control portion attachable to the engagement portion and configured for receiving runoff surge flow flowing down the storm drain and slowing the flow for entry into the storm sewer through the engagement portion. The engagement portion is radially expandable to tightly and frictionally engage an interior surface of the storm sewer pipe, and preferably is configured to expand radially as it is shortened axially.
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Citations
28 Claims
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1. A storm sewer overflow control device for controlling runoff surge flows from a first pipe into a generally normally oriented second pipe, comprising:
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an engagement portion configured for insertion into the second pipe;
a flow control portion attachable to said engagement portion and configured for receiving runoff surge flow flowing down the storm drain and slowing the flow for entry into the second pipe through said engagement portion;
said flow control portion including a cowl attachable to a flange and having a sidewall defining an inlet;
said engagement portion having a proximal end and a distal end, and at least one component being radially expandable to create a friction fit against an interior surface of the second pipe for retaining said engagement portion in the second pipe;
clog release means for releasing debris trapped between said flow control portion and said engagement portion, said clog release means includes at least one door formed in said sidewall, said door defining an opening bordered by said cowl and said flange for temporarily increasing the flow of water through said device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A storm sewer overflow control device for controlling runoff surge flows from a first pipe into a generally normally oriented second pipe, comprising:
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an engagement portion configured for insertion into the second pipe;
a flow control portion attachable to said engagement portion and configured for receiving runoff surge flow flowing down the storm drain and slowing the flow for entry into the second pipe through said engagement portion;
said engagement portion having a proximal end and a distal end, and at least one component being radially expandable to create a friction fit against an interior surface of the second pipe for retaining said engagement portion in the second pipe; and
wherein said at least one component which is radially expandable includes a spider member axially reciprocable relative to said engagement portion and being configured to exert a wedging clamping force upon a resilient ring as said spider member is moved toward said proximal end. - View Dependent Claims (23, 24, 25)
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26. A storm sewer overflow control device for controlling runoff surge flows from a generally vertically oriented storm drain into a generally horizontally oriented storm sewer pipe, comprising:
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an engagement portion configured for insertion into the storm sewer pipe to define a passageway and including a flange, said engagement portion having a plurality of slots having a longitudinal axis generally parallel with an axis of said engagement portion, spider ring dimensioned for reciprocal axial movement in said passageway and having a plurality of radially projecting arms;
a resilient wedge member configured for circumscribing said engagement portion;
a flow control portion attachable to said flange and defining a flow path configured for receiving runoff surge flow flowing down the storm drain and slowing the flow for entry into the storm sewer pipe; and
an expander mechanism configured to draw said spider ring toward said flange to engage said wedge member and to pull said wedge member toward said proximal end to wedge said wedge member against the interior of the pipe.
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27. A storm sewer overflow control device for controlling runoff surge flows from a generally vertically oriented storm drain into a generally horizontally oriented storm sewer pipe, comprising:
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an engagement portion configured for insertion into the storm sewer pipe to define a passageway and including a flange, said engagement portion having a plurality of slots having a longitudinal axis generally parallel with an axis of said engagement portion, spider ring dimensioned for reciprocal axial movement in said passageway, a plurality of radially projecting arms;
a resilient wedge member configured for circumscribing said engagement portion;
a flow control portion attachable to said flange and defining a flow path configured for receiving runoff surge flow flowing down the storm drain and slowing the flow for entry into the storm sewer pipe; and
an expander mechanism configured to draw said spider ring toward said flange to engage said wedge member and to pull said wedge member toward said proximal end to wedge said wedge member against the interior of the pipe. - View Dependent Claims (28)
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Specification