Pipe joints or couplings – With assembly means or feature – Particular tool-engaging means or with tool
Patent
1997-04-11
1999-05-18
Arola, Dave W.
Pipe joints or couplings
With assembly means or feature
Particular tool-engaging means or with tool
285 40, 285 55, 285197, 285205, 285298, 285404, 285901, 285906, 138 89, 29456, 29469, F16L35/00
Patent
active
059043776
ABSTRACT:
A pipe fitting adapted to be installed in an aperture in a wall of a fluid container, comprises inner and outer co-axial sleeve members interconnected for relative axial movement and a split, helically wound, washer. The inner sleeve member has an end portion insertable through the aperture, and the outer sleeve member has an annular bearing surface adjacent to the end portion adapted to overlie a first one of two opposed surfaces of the wall around the periphery of the aperture. The split washer is retained to and extends around the end portion opposite the bearing surface, and is of larger outer diameter than the aperture but is insertable therethrough by winding so as to overlie the second of the opposed surfaces of the wall. The washer is compressible into annular engagement with the second surface of the wall by relative axial movement of the inner and outer sleeve members such that the wall around the aperture is gripped between the washer and the bearing surface, thereby sealing the connection between the fitting and the wall. The fitting may be installed in an aperture of a pipe, which may be lined.
REFERENCES:
patent: 1062635 (1913-05-01), Clements
patent: 3349792 (1967-10-01), Larkin
patent: 3477745 (1969-11-01), Williams et al.
patent: 5577776 (1996-11-01), Welch
Arola Dave W.
Glynwed Pipe System Limited
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