Pipe joints or couplings – With casing – lining or protector – Lined
Patent
1998-11-02
2000-07-11
Arola, Dave W.
Pipe joints or couplings
With casing, lining or protector
Lined
285322, 285337, 285342, 285369, F16L 914
Patent
active
060861118
ABSTRACT:
The invention provides a pipe coupling (2) for connecting together a first pipe member (P1) having a liner pipe (L1) arranged in the bore thereof, to a second pipe member (P2); the pipe coupling comprising a first sleeve member (8) arranged to receive an end of the first pipe member (P1) whereby an end of the liner pipe (L1) can protrude axially therefrom; a second sleeve member (10) arranged to receive an end of the second pipe member (P2); a first annular sealing means (12) for disposal about the first pipe member (P1), the first annular sealing means (12) being arranged axially between a first annular collar (4) and the first sleeve member (8); second annular sealing means (14) and first gripping means (62) for disposal about an end of the liner pipe (l1), the second annular sealing means (14) being arranged axially between the first and second sleeve members (8,10); third annular sealing means (16) for disposal about the second pipe element (P2), the third annular sealing means (16) being arranged axially between a second annular collar (6) and the second annular sleeve member (10); and means (34,36,38) for drawing the first and second annular collars (4,6) axially together such that the first annular sealing means (12) is compressed axially between the first annular collar (4) and the first sleeve member (8) and is deformed radially inwardly to seal against the first pipe member (P1); the second annular sealing member (14) and first annular gripping means (62) are compressed axially between the first and second sleeve members (8,10) such that the second annular sealing member (14) is deformed radially inwardly into sealing contact with the end of the liner pipe (L1) and the first annular gripping member (62) is urged radially inwardly into gripping contact with the liner pipe (L1); and the third annular sealing member (16) is compressed axially between the second annular collar (6) and the second sleeve member (10) and is deformed radially inwardly into sealing contact with the second pipe member (P2).
REFERENCES:
patent: 1921400 (1933-08-01), Weber
patent: 2268263 (1941-12-01), Newell et al.
patent: 3782683 (1974-01-01), Lee et al.
patent: 4648631 (1987-03-01), Bryant
patent: 5082313 (1992-01-01), Bryant
Arola Dave W.
Glynwed Pipe Systems Limited
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