Flue pipe connection assembly and method of connection thereof

Details Flue pipe connection assembly and method of connection thereof Flue pipe connection assembly and method of connection thereof

1983-01-06

1985-01-22

Koczo, Michael

Heat exchange

Structural installation

165178, 165DIG2, 285305, F28F 906

Patent

active

044945981

ABSTRACT:
A coupling between a stainless steel exhaust manifold of a recuperative heat exchanger and a plastic flue pipe. The internal integrity of the manifold is maintained by spot welding a mounting bracket to the outside thereby defining a slot between parallel portions of the bracket and the manifold. The flue pipe inserts through coaxial circular apertures in the bracket and the manifold. A shoulder of an annular protrusion on the outside of the flue pipe presses against an O-ring seated in an inwardly directed step of the circular aperture in the manifold thereby providing an airtight seal. The flue pipe is secured in the described position by a bifurcated retainer clip slid down into the slot thereby engaging portions of the opposite shoulder of the annular protrusion.

REFERENCES:
patent: 3560027 (1971-02-01), Graham
patent: 3768844 (1973-10-01), Goward et al.
patent: 3929356 (1975-12-01), DeVincent et al.
patent: 4103735 (1978-08-01), Warner
patent: 4164210 (1979-08-01), Hollowell
patent: 4304297 (1981-12-01), Margraf
patent: 4314444 (1982-02-01), Putnam et al.

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