Patent · US Expired

System and method for closing a tank opening

US6843267B1 · kind B1 · utility

14Cited by

2References

15Claims

0Family size

Assignee

SOLVAY (Société Anonyme) · BE

Inventors

Jules-Joseph Van Schaftingen · Brussels, BE
Stephane Leonard · Brussels, BE
Yannick Gerard · Lasne, BE
Francois Dougnier · Boortmeerbeek, BE
Joel Op De Beeck · Brussels, BE
Paul Wouters · Vilvoorde, BE

Key dates

Filing date	Sep 4, 2000
Grant date	Jan 18, 2005
Priority date	—
Expiry date	Sep 14, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/86324
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

System and for sealing an opening of a plastic tank with a multilayer wall by means of a multilayer plate itself constituted by a polymer structure including at least one internal barrier layer and an exterior layer compatible with the exterior layer of the tank wall. The multilayer plate is welded over an opening in the tank and the plate and the wall of the tank are superimposed so that the number of superimposed layers is equal to the sum of the number of layers in the plate and the number of layers in the wall of the tank.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.