Pipe joints or couplings – Repair
Patent
1985-03-27
1987-03-03
Scanlan, Jr., Richard J.
Pipe joints or couplings
Repair
285 23, 285397, 285370, 29255, 29451, 138 97, 138DIG5, 267 15, 267166, F16L 5518
Patent
active
046470727
ABSTRACT:
The present invention relates to a repair sleeve comprising a flexible, hose-like main part (1) and a spiral spring (2), which, when the sleeve is mounted in a pipe line, pretensions the hose-like main part (1) into sealing engagement against the inner wall of the surrounding pipe. The invention also includes an insertion device (4) for the repair sleeve, said device being a cylindrical body (5) mounted on wheels. At the ends of this body (5) there are latching means (7, 8) which are releasably fastenable to the ends of the spring (2). The latching means comprise a pin (7) biased to thrust out through the wall of the body (5) and into holes at the ends of the spring (2) wound round the body (5). Both pins (7) are simultaneously releasable with the aid of a linkage system (11, 13, 14, 15) on actuating the system. Eyes or cages (8) accommodating the ends of the springs are also associated with the pins (7).
REFERENCES:
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patent: 2977994 (1961-04-01), Xenis
patent: 3034869 (1962-05-01), Peterson
patent: 3243211 (1966-03-01), Wetmore
patent: 3270817 (1966-09-01), Papaila
patent: 3336842 (1967-08-01), Adelt
patent: 3474832 (1969-10-01), Broadhead
patent: 3895652 (1975-07-01), Zach
patent: 4109684 (1978-07-01), Fernandez
patent: 4330916 (1982-05-01), Dannatt
Nicholson Eric K.
Scanlan, Jr. Richard J.
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