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:
Jun. 11, 1996
Filed:
Mar. 11, 1994
Stephen Paletta, Briarcliff Manor, NY (US);
Other;
Abstract
An apparatus and method for deforming polymeric pipe to have a reduced diameter for insertion into new or damaged pipelines in situ. A further method for converting existing pipelines in situ to dual-containment pipelines. The apparatus includes a plurality of adjustable rollers and conveyor systems in a portable unit which accommodates variable pipe specifications. As a polymeric pipe is conveyed through the apparatus, a deforming means applies a gradually increasing pressure along the length of the pipe to collapse the pipe and form a longitudinal depression therein while preventing rotation of the pipe. The deformed pipe exits the apparatus after being shaped into a cylindrical form with a reduced diameter. When lining pipe, the deformed pipe is inserted into an existing pipeline and returned to its original cylindrical form. When converting to dual-containment pipelines, the deformed pipe will have a plurality of spacers attached thereon such that when the pipe is inserted and reformed it will be axially aligned within the existing pipeline providing an annular space between the existing pipe and the inserted pipe.