The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 19, 2013
Filed:
Mar. 10, 2010
Gerald S. Sutton, Hamilton, OH (US);
Gerald S. Sutton, Hamilton, OH (US);
Advanced Drainage Systems, Inc., Hilliard, OH (US);
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.