Vent collar for plastic lined pipe

Details Vent collar for plastic lined pipe Vent collar for plastic lined pipe

1988-09-30

1992-09-22

Arola, Dave W.

Pipe joints or couplings

With leakage or drip disposal

Weep holes

285 55, 285363, A16L 5500

Patent

active

051491427

ABSTRACT:
In a lined pipe, permeated gases trapped between the liner and the outer casing are vented by a collar received between the liner flange and the pipe flange which defines at least one predetermined channel through which the gases may exit.

REFERENCES:
patent: 2688500 (1954-09-01), Scott
patent: 3089713 (1963-05-01), Scaramucci
patent: 3301277 (1967-01-01), Kelly
patent: 3506039 (1970-04-01), Marriott
patent: 3650550 (1972-03-01), West
patent: 3735475 (1973-05-01), Marriott
patent: 4127287 (1978-11-01), Davies
patent: 4281859 (1981-08-01), Davies
patent: 4537425 (1985-08-01), Press et al.
patent: 4643457 (1987-02-01), Press
patent: 4691740 (1987-09-01), Svetlik et al.

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