Sealing device

Abstract

A sealing device is disclosed for separating sections inside an elongate hole with at least one duct extending inside and along the hole. In at least one embodiment, the sealing device includes a first portion which is arranged, in use of the sealing device, to surround the duct and fit substantially tightly against the same, and a flexible cup-shaped second portion, which is arranged to surround the first portion and be resilient radially outwards to seal, in use, against the hole. Moreover, in at least one embodiment, a method is disclosed for separating sections in an elongate hole with a duct extending inside and along the hole. A sealing device is slipped onto the duct at the intended level so that the sealing device after installation forms a cup shape around the duct. The duct (and the sealing device are inserted into the hole, and the duct and the sealing device are installed at the intended level.

1 . A sealing device for separating sections inside an elongate hole with at least one duct extending inside and along the hole, the sealing device comprising:
 a first portion arranged, in use of the sealing device, to surround the at least one duct and fit substantially tightly against the at least one duct; and   a flexible cup-shaped second portion, arranged to surround first portion and arranged to be resilient radially outwards to seal, in use, at its outer edge against the elongate hole, the second portion being thin relative to its outer diameter and the second portion, at least at its outer edge, including an outer circumference which increases with an increasing diameter away from the first portion.   
   
   
       2 . A sealing device as claimed in  claim 1 , wherein the outer circumference of substantially the entire second portion increases with an increasing diameter away from the first portion. 
   
   
       3 . A sealing device as claimed in  claim 1 , wherein the second portion includes a thickness which decreases with a simultaneously increasing diameter away from the first portion. 
   
   
       4 . A sealing device as claimed in  claim 1 , wherein said second portion includes the shape of a truncated cone, the small diameter of the cone being arranged next to the first portion. 
   
   
       5 . A sealing device as claimed in  claim 1 , wherein said second portion is made of PEM material. 
   
   
       6 . A sealing device as claimed in  claim 1 , wherein said first portion comprises at least one sealing clip. 
   
   
       7 . A sealing device as claimed in  claim 1 , wherein said second portion is substantially circular. 
   
   
       8 . A sealing device as claimed in  claim 1 , wherein said first portion is substantially circular. 
   
   
       9 . A sealing device as claimed in any  claim 1 , wherein said second portion is substantially concentrically arranged relative to said first portion. 
   
   
       10 . A sealing device as claimed in  claim 1 , wherein said sealing device includes a slot through said first and second portion. 
   
   
       11 . A sealing device for separating sections inside an elongate hole with at least one duct extending inside and along the hole, the sealing device comprising:
 a first portion arranged, in use of the sealing device, to surround the at least one duct and to fit substantially tightly against the at least one duct; and   a flexible second portion, arranged to surround said first portion to seal, in use, on its outer side facing away from said first portion against the hole, the second portion being thin relative to its outer diameter, and a length of the sealing device being such that the sealing device, in use, extends continuously substantially all the way to a mouth of the hole.   
   
   
       12 . A sealing device as claimed in  claim 11 , wherein said sealing device is made of non-rigid plastic. 
   
   
       13 . A sealing device as claimed in  claim 11 , wherein said sealing device has a thickness of 0.5-1.5 mm. 
   
   
       14 . A sealing device as claimed in  claim 1 , wherein said sealing device has a diameter which, in use, corresponds substantially to the diameter of the hole. 
   
   
       15 . A sealing device as claimed in  claim 11 , wherein said sealing device is made as a continuous cylinder. 
   
   
       16 . A kit comprising:
 at least one tube; and   a sealing device as claimed in  claim 11 , wherein said sealing device surrounds said tube and is arranged to fit tightly against said tube at a level which in use of the kit is positioned below a level imagined for sealing in an elongate hole.   
   
   
       17 . (canceled) 
   
   
       18 . A kit as claimed in  claim 16 , wherein said tube, in its side which in use faces the bottom of the hole, is arranged with a weight, wherein said sealing device is arranged to fit tightly between the tube and the weight. 
   
   
       19 . A method of separating sections in an elongate hole with a duct extending inside and along the hole, the method comprising:
 inserting a sealing device as claimed in  claim 1  and the duct into the hole so that, after installation, the sealing device is positioned so as to surround the duct and form a cup shape around the same; and   installing the duct and the sealing device at an intended level.   
   
   
       20 . A method of separating sections as claimed in  claim 19 , wherein a sealing compound is supplied to said sealing device. 
   
   
       21 . A method of separating sections as claimed in  claim 19 , wherein said sealing compound is adapted to expand when contacting water. 
   
   
       22 . A method of separating sections as claimed in  claim 19 , wherein said sealing compound contains montmorillonite. 
   
   
       23 . A method of separating sections as claimed in  claim 22 , wherein said sealing compound contains bentonite. 
   
   
       24 . (canceled) 
   
   
       25 . (canceled) 
   
   
       26 . A method of separating sections as claimed in  claim 19 , wherein the hole is substantially vertically positioned. 
   
   
       27 . A method of separating sections as claimed in  claim 19 , wherein the hole is substantially circular. 
   
   
       28 . A method of separating sections as claimed in  claim 19 , wherein the hole is a well. 
   
   
       29 . (canceled)