Invention Grant
- Patent Title: Systems and methods for deforming an outer wall of pipe
- Patent Title (中): 管道外壁变形的系统和方法
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Application No.: US12721196Application Date: 2010-03-10
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Publication No.: US08398914B2Publication Date: 2013-03-19
- Inventor: Gerald S. Sutton
- Applicant: Gerald S. Sutton
- Applicant Address: US OH Hilliard
- Assignee: Advanced Drainage Systems, Inc.
- Current Assignee: Advanced Drainage Systems, Inc.
- Current Assignee Address: US OH Hilliard
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner LLP
- Main IPC: B29C49/04
- IPC: B29C49/04 ; B29C49/22

Abstract:
A method of deforming an outer wall of polymer pipe is provided. The method includes: forming dual-wall pipe having a smooth wall and a corrugated wall; extruding an outer wall of pipe onto the corrugated wall of the dual-wall pipe; penetrating the outer wall of pipe with a vacuum punch; and drawing a vacuum between the corrugated wall and the outer wall via the vacuum punch; wherein the vacuum drawn between the corrugated wall and the outer wall causes the outer wall to deform in a direction towards the corrugated wall. An apparatus for forming an outer wall of pipe and a mold configured to form a coupling preform in a segment of continuously-extruded and molded polymer pipe are also provided.
Public/Granted literature
- US20110221090A1 Systems and Methods For Deforming An Outer Wall Of Pipe Public/Granted day:2011-09-15
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