# US 5,702,129 A · Riser assembly for underground pipe connections > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,702,129 A - Document ID: US5702129A - Status: Granted - Kind: A - Application number: 08/593,367 - Filed: 1996-01-29 - Granted: 1997-12-30 - Earliest claimed: 1996-01-29 - Assignees: Donald Harrington - Inventors: Donald Weber Harrington - Web page: https://patentgrep.com/patent/US5702129A ## CPC - E03F 3/04: Pipes or fittings specially adapted to sewers (manufacture of concrete tubes B28; pipes or pipe fittings in general F16L) - E03F: SEWERS; CESSPOOLS ## Abstract The riser assembly includes a riser for fluid connection between a main fitting and a lateral pipe at different elevations. The lateral pipe is connected to the riser pipe by a 90.degree. bend having an elongated bell along its vertically extending portion for slidably receiving the upper end of the riser pipe. The vertical bell rests on a casing cap overlying a casing pipe concentric with, but spaced from, the riser pipe. The casing pipe terminates in a casing shoe resting on bedding material about the riser whereby loads are transferred to the casing pipe and casing shoe without loading the riser pipe. ## Claims ### Claim 1 A riser assembly for underground pipe connections between a lateral pipe disposed above a generally horizontally extending main pipe and having a riser pipe extending generally vertically from a main fitting on the main pipe comprising: a casing pipe for surrounding and axial movement relative to the riser pipe; a casing cap connected to the casing pipe at its upper end; and an elbow having a horizontally extending portion for connection with the lateral pipe and a vertical extending portion for slidably receiving an upper end of the riser, said vertical portion engaging said casing cap, said casing pipe having a casing shoe adjacent a lower end thereof for distributing loading on the casing pipe, casing cap and elbow to surrounding bedding without loading the riser or main fitting. ### Claim 2 (depends on 1) A riser assembly according to claim 1 wherein said casing shoe comprises a laterally extending member of enlarged lateral dimension relative to said casing pipe. ### Claim 3 (depends on 2) A riser assembly according to claim 2 wherein said member includes a plate extending radially outwardly of and substantially normal to said casing pipe. ### Claim 4 A riser assembly according to claim I wherein said casing cap has an opening for receiving the upper end of the riser enabling the riser to be received in the vertical portion of the elbow. ### Claim 5 (depends on 4) A riser assembly according to claim 4 wherein said elbow seats on said casing cap about the riser, said elbow including an interior stop normally spaced from the upper end of the riser and enabling relative sliding movement of the riser and elbow in response to loadings on the system. ### Claim 6 (depends on 1) A riser assembly according to claim 1 wherein said elbow comprises a 90.degree. bend, said vertical portion of said bend being longer than the horizontal portion of said bend. ### Claim 7 (depends on 6) A riser assembly according to claim 6 wherein said vertical portion of said bend includes an elongated bell. ### Claim 8 A riser assembly for underground pipe connections comprising: a main pipeline having a main fitting with an upwardly extending bell; a riser pipe extending generally vertically from said main fitting and having a lower end thereof received in said bell; a casing member surrounding at least in part and movable relative to said riser pipe; a casing cap disposed on an upper end of said casing member and having an opening therethrough for receiving an upper end portion of said riser pipe; a lateral pipe; a generally 90.degree. bend having a horizontal portion including a bell for receiving an end of said lateral pipe; said bend having a vertical portion including a bell engaging the casing cap, said vertical portion extending a greater distance than said horizontal portion and slidably receiving the upper end portion of the riser; said casing member having a casing element for distributing loading on the casing pipe, casing cap, and 90.degree. bend to surrounding material without substantially loading the riser pipe. ### Claim 9 (depends on 8) A riser assembly according to claim 8 wherein said casing element has an enlarged lateral dimension relative to said casing member. ### Claim 10 (depends on 9) A riser assembly according to claim 9 wherein said casing element includes a plate extending radially outwardly of and substantially normal to said casing member. ### Claim 11 (depends on 8) A riser assembly according to claim 8 wherein said bend seats on said casing cap about the riser, said bend including an interior stop spaced from the upper end of the riser to enable relative sliding movement of said riser and bend in response to loadings on the casing member, casing cap and elbow. ### Claim 12 (depends on 8) A riser assembly according to claim 8 wherein said bend includes a horizontal portion having a bell, the bell on said vertical portion having a length greater than the length of said bell on the horizontal portion. ### Claim 13 (depends on 8) A riser assembly according to claim 8 wherein said casing member comprises a cylindrical casing pipe surrounding said riser pipe and spaced laterally therefrom, said casing element including a lateral projection extending from said casing pipe. ### Claim 14 (depends on 13) A riser assembly according to claim 13 wherein said casing element includes a plate extending radially outwardly and substantially normal to said casing pipe.