Seal for joint, and method of installing same seal
AssigneesC.I. Kasei Company, Limited, Paus & Paus A/S
InventorsMichiyoshi Terauchi, Masanori Shimoguchi, Takahide Kameda, Svein Jonsson
Life of this patent
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Abstract
The invention relates to a seal (1) for a joint comprising a cylindrical inner core layer (2) made of a water-unexpansible flexible material and having an internal opening (2a), and an outer coating layer (3) which is made of a water-expansible rubber. The outer coating layer (3) coats the inner core layer (2) and has penetrating openings (4) in the form of slits, pinholes or the like. The penetrating openings (4) extend to penetrating openings in the inner core layer (2) and communicate with the internal opening (2a) through the penetrating openings of the inner core layer (2).
Claims14
A seal for a joint, comprising:
- an inner core layer made of a water-unexpansible flexible material and having an internal opening;
- and
- an outer coating layer which is formed of a water-expansible rubber and which coats the inner core layer and has first penetrating openings alternately positioned in a circumferential direction of said outer coating layer and having a length less than that of a longitudinal length of the outer coating layer, said inner core layer having second penetrating openings formed therein,
- wherein said first penetrating openings extend to said second penetrating openings in the inner core layer and communicate with the internal opening through the second penetrating openings of the inner core layer.
A method of installing a seal for a joint, the joint comprising an inner core layer formed of a water-unexpansible flexible material and having an internal opening, and an outer coating layer formed of a water-expansible rubber and coating the inner core layer and having first penetrating openings, said inner core layer having second penetrating openings formed therein, said first penetrating openings extending to said second penetrating openings in the inner core layer and communicating with the internal opening through the second penetrating openings of the inner core layer, said method comprising the steps of:
- positioning a first portion of concrete;
- positioning the seal at a position of the joint of concrete on said first portion of concrete;
- positioning a second portion of concrete over said seal;
- and
- injecting, under pressure, a filling material into a gap between an outside surface of the seal and the second portion of concrete through the internal opening and the first and second penetrating openings of the inner and outer layers so that the filling material is solidified.
A seal for a joint, comprising:
- an inner core layer made of a water-unexpansible flexible material and having an internal opening;
- and
- an outer coating layer which is formed of a water-expansible rubber and which coats the inner core layer and has first penetrating openings, said inner core layer having second penetrating openings formed therein, wherein said first penetrating openings extend to said second penetrating openings in the inner core layer and communicate with the internal opening through the second penetrating openings of the inner core layer;
- wherein a surface of said inner core layer has integrally provided flanged portions;
- and wherein said outer coating layer is applied only to said inner core layer, said outer peripheral portions of said flanged portions not having said outer coating layer applied thereto.
Dependencies are inferred from the claim text.