IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0272075
(2008-11-17)
|
등록번호 |
US-8820801
(2014-09-02)
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발명자
/ 주소 |
- Sutton, Gerald S.
- Shaffer, William V.
- Goddard, James B.
- Kurdziel, John M.
- Kelley, David J.
- Biesenberger, Jeffrey J.
|
출원인 / 주소 |
- Advanced Drainage System, Inc.
|
대리인 / 주소 |
Finnegan Henderson Farabow Garrett & Dunner, L.L.P.
|
인용정보 |
피인용 횟수 :
6 인용 특허 :
133 |
초록
▼
A coupling for multi-wall, corrugated pipe, the pipe including a corrugated wall having a plurality of primary corrugations, is disclosed. The coupling includes a first pipe section having disposed at one end a bell portion, the bell portion having a bell portion of corrugated wall and an outer wall
A coupling for multi-wall, corrugated pipe, the pipe including a corrugated wall having a plurality of primary corrugations, is disclosed. The coupling includes a first pipe section having disposed at one end a bell portion, the bell portion having a bell portion of corrugated wall and an outer wall; a second pipe section having disposed at one end a spigot portion, the spigot portion having a spigot portion of corrugated wall between an inner wall and an outer wall; and a gasket disposed in a groove extending around a circumference of the spigot portion and engaged between the bell portion of corrugated wall and the spigot portion of corrugated wall. A multi-wall, corrugated pipe section, and method for assembling a plurality of multi-wall, corrugated pipe sections, are also disclosed.
대표청구항
▼
1. A pipe system comprising: a first pipe including a first inner wall, a first outer wall, and a first corrugated wall, the first pipe having disposed at one end a bell portion, the bell portion including a portion of the first corrugated wall and a portion of the first outer wall;a second pipe inc
1. A pipe system comprising: a first pipe including a first inner wall, a first outer wall, and a first corrugated wall, the first pipe having disposed at one end a bell portion, the bell portion including a portion of the first corrugated wall and a portion of the first outer wall;a second pipe including a second inner wall, a second outer wall, and a second corrugated wall, the second pipe having disposed at one end a spigot portion, the spigot portion including a portion of the second corrugated wall positioned between a portion of the second inner wall and a portion of the second outer wall, wherein the spigot portion is inserted into the bell portion to couple the first pipe and the second pipe; anda gasket disposed in a groove extending around a circumference of the spigot portion and contacting the portion of the first corrugated wall of the bell portion and the portion of the second outer wall of the spigot portion. 2. The pipe system of claim 1, wherein: the second corrugated wall includes a plurality of primary corrugations, wherein the spigot portion includes a plurality of spigot corrugations having heights less than heights of the primary corrugations; andthe portion of the first corrugated wall of the bell portion is at least substantially fused to the portion of the first outer wall of the bell portion along its length. 3. The pipe system of claim 2, wherein the portion of the second outer wall of the spigot portion is drawn down onto the spigot corrugations, and the gasket includes a protrusion inserted into the groove and a sealing surface that engages the portion of the first corrugated wall of the bell portion when the spigot portion is inserted into the bell portion. 4. The pipe system of claim 3, wherein the portion of the first corrugated wall of the bell portion is smoothed against the portion of the first outer wall of the bell portion such that a water-tight interface is formed between the sealing surface of the gasket and the portion of the first corrugated wall of the bell portion when the spigot portion is inserted into the bell portion. 5. The pipe system of claim 2, wherein the portion of the second corrugated wall of the spigot portion further includes an intermediate corrugation disposed between the spigot corrugations and the primary corrugations, and a height of the intermediate corrugation is less than the heights of the spigot corrugations and less than the heights of the primary corrugations. 6. A multi-wall, corrugated pipe section including an inner wall, an outer wall, and a corrugated wall disposed between the inner and outer walls, the corrugated pipe section comprising: a spigot portion including a first portion of the corrugated wall disposed between a first portion of the inner wall and a first portion of the outer wall, wherein the first portion of the corrugated wall includes a first plurality of corrugation crests and a first plurality of corrugation valleys; anda bell portion including a second portion of the corrugated wall affixed to a second portion of the outer wall;wherein the spigot portion has a gasket retained in a groove extending around a circumference of the spigot portion, wherein the groove is positioned on a top end of a corrugation crest of the first plurality of corrugation crests. 7. The multi-wall, corrugated pipe section of claim 6, wherein the corrugated wall of the multi-wall, corrugated pipe section includes a plurality of primary corrugations having a primary height. 8. The multi-wall, corrugated pipe section of claim 7, wherein the first portion of the corrugated wall comprises: a plurality of spigot corrugations having heights less than the primary height of the primary corrugations; anda plurality of intermediate corrugations having heights less than the heights of the spigot corrugations. 9. The multi-wall, corrugated pipe section of claim 8, wherein the first portion of the corrugated wall includes two spigot corrugations, said two spigot corrugations extending axially together along a length of the pipe section between 4 and 8 inches, and two intermediate corrugations. 10. The multi-wall, corrugated pipe section of claim 9, wherein the first portion of the outer wall extends across and is fused to the two spigot corrugations, the two intermediate corrugations, and the primary corrugations. 11. The multi-wall, corrugated pipe section of claim 8, wherein a diameter of the spigot portion measured at the intermediate corrugations is less than a diameter of the spigot portion measured at a primary corrugation and less than a diameter measured at the spigot corrugations. 12. The multi-wall, corrugated pipe section of claim 7, wherein the second portion of the corrugated wall includes a plurality of bell corrugations having heights less than heights of the primary corrugations. 13. The multi-wall, corrugated pipe section of claim 6, wherein the outer wall of the pipe section includes a plurality of corrugations having crests and valleys, said outer wall crests being aligned with crests of the corrugated wall and said outer wall valleys being aligned with valleys of the corrugated wall. 14. The multi-wall, corrugated pipe section of claim 7, wherein the first portion of the inner wall extends to a spigot terminus proximate to the spigot corrugations, and the second portion of the inner wall extends to an inner wall terminus proximate to a primary corrugation closest to the bell portion. 15. A method of coupling multi-wall, corrugated pipe, the pipe including an inner wall, an outer wall, and a corrugated wall having a plurality of primary corrugations disposed between the inner and outer walls, the method comprising: positioning a first pipe section, having disposed at one end a spigot portion, the spigot portion including a first portion of the corrugated wall disposed between a first portion of the inner wall and a first portion of the outer wall of the multi-wall, corrugated pipe, wherein the first portion of the corrugated wall includes a groove extending around a circumference of the spigot portion, wherein the first portion of the outer wall extends over the first portion of the corrugated wall except over the groove;positioning a second pipe section, having disposed at one end a bell portion, the bell portion including a second portion of the corrugated wall affixed to a second portion of the outer wall of the multi-wall, corrugated pipe;inserting a gasket into the groove of the first portion of the corrugated wall; andinserting the spigot portion of the first pipe section into the bell portion of the second pipe section, such that the gasket engages second portion of the corrugated wall. 16. The method of claim 15, further comprising: removing a second portion of the inner wall from the second pipe section proximate to the bell portion, prior to inserting the spigot portion into the bell portion. 17. The method of claim 15, further comprising: removing a section of the first portion of the outer wall that extends over the groove of the first portion of the corrugated wall, prior to inserting the gasket into the groove of the first portion of the corrugated wall. 18. The method of claim 15, further comprising: deforming the second portion of the outer wall, after inserting the spigot portion into the bell portion. 19. The method of claim 15, further comprising: forming a water-tight interface between a sealing surface of the gasket and the second portion of the corrugated wall when the spigot portion is inserted into the bell portion.
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