or
Bookmark and Share
   
Document Number
US Patent 6539978
Issued Date
April 1, 2003
Link
Inventors
Map
Abstract
A lining method for a host pipe (10) including lubrication of the host pipe prior to insertion of a thermoplastic liner (11) using tight fit techniques. After allowing the inserted liner to relax, the liner is partially pulled from within the host pipe using puller (20) and clamped with an internal clamp (30) to allow fitting of a special flange (40) to the liner (11) by butt fusion, for example. Threafter the liner is allowed to revert so as to abut a flange (12) fitted to the host pipe (10). The technique is repeated at the other pipe end.
Drawing
Pipe lining - US Patent 6539978 Drawing
Drawing from US Patent 6539978
Tags:
Description:
Amusing 0%
Clever 0%
Complex 0%
Efficient 0%
Historic 0%
Important 0%
Innovative 0%
Interesting 0%
Practical 0%
Simple 0%
Number of Claims:
13
Comments:
no comments yet
Published
April 1, 2003
Application Number
09/719,104
Filed
March 22, 2001
US Classification
138/98   138/109
Int'l Classification
B29C   63/34   (20060101)   F16L   55/165   (20060101)   F16L   55/162   (20060101)   B29C   55/00   (20060101)   B29C   65/00   (20060101)  
Examiner
Attorney/Law Firm
USPTO Field of Search
138/97   138/98   138/109  
Related Patents
Claims
Description
About| FAQs| Terms & Disclaimer| Link to Us| Contact Us