Pipe joints or couplings – With fluid pressure seal – Flexible lip
Patent
1991-06-17
1993-04-20
Taylor, Dennis L.
Pipe joints or couplings
With fluid pressure seal
Flexible lip
285373, 285383, F16L 17035
Patent
active
052035948
ABSTRACT:
A pipe coupling has a housing which is split in a longitudinal direction and has inwardly bent end walls and a steel insert sheet of analogous design bridging the housing gap. With the aid of a closure with tensioning screws, the housing can be constricted in the manner of a pipe clip. A sleeve, enclosed at the end faces and the circumference by the housing and a steel insert sheet, and roughly C-shaped in cross-sectionis compressed in the circumferential direction and is brought to bear on the pipe wall. As a result of inherent recovery capacity, an annular insert, flexible in the circumferential direction but rigid transversely thereto, bears on the sleeve web and thereby holds the sleeve web in surface contact with the housing even when the coupling is pressure less. In combination therewith, sliding rings are preferably located between the end faces of the sleeve and the end walls of the housing, which sliding rings close the annular gap remaining between the end walls of the housing and the pipe wall. The coupling is less sensitive to relative movements of the pipes which are caused by expansion. The insert can have extensions which can engage in the joint between the pipe ends, thereby facilitating the centering of the coupling upon assembly and preventing shifting of the coupling due to expansion.
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Chun Heather
Straub Federnfabrik
Taylor Dennis L.
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