Flangeless piping system for lined pipe

Details Flangeless piping system for lined pipe Flangeless piping system for lined pipe

1997-05-12

1999-08-31

Reichard, Lynne

Pipe joints or couplings

With casing, lining or protector

Lined

285256, 2852224, 285397, F16L 914

Patent

active

059443596

ABSTRACT:
An apparatus for joining at least one longitudinal end of a pipe to a member having a longitudinally extending aperture therethrough includes a unitary, one-piece, elongated body with structure responsive to a crimping operation for lockingly and sealingly engaging with an inner surface of the pipe. The lockingly and sealingly engaging structure can include a reduced diameter portion engagable within the longitudinal end of the pipe and having at least two radially outwardly extending annular ridges or teeth formed on the reduced diameter portion. For lined pipe, the engaging structure can also include a ribbed or barbed portion extending longitudinally outwardly from the reduced diameter portion for sealingly engaging the lining between the ribbed portion and the inner surface of the pipe in response to the crimping operation.

REFERENCES:
patent: 3335758 (1967-08-01), Bertolet, Jr.
patent: 3499666 (1970-03-01), Turner
patent: 4293150 (1981-10-01), Press
patent: 4366841 (1983-01-01), Currie et al.
patent: 4367889 (1983-01-01), Redl
patent: 4726612 (1988-02-01), Picton
patent: 5348779 (1994-09-01), Igarashi
patent: 5566984 (1996-10-01), Abbema et al.

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