Assembly of a closing baffle inside a tubular member

Details Assembly of a closing baffle inside a tubular member Assembly of a closing baffle inside a tubular member

1986-11-19

1988-08-09

Thronson, Mark J.

Pipes and tubular conduits

With closures and plugs

Inflation stem type

165 76, F16L 5512

Patent

active

047621524

ABSTRACT:
An assembly for a motor vehicle heat exchanger includes a tubular member defined by a wall having inner and outer surfaces, an internal passage defined by the inner surfaces and an open end. An integral one-piece baffle is positioned within the internal passage at a selected position spaced from the open end. The baffle has an outer cross-sectional shape complementary to the internal cross-sectional shape of the tubular member. The baffle includes a bottom forming a closed first end closing the internal passage of the tubular member and a flange integral with the bottom and extending axially therefrom toward the open end of the tubular member, the flange forming a wall of the baffle. The baffle wall is expanded outwardly to result in permanent plastic outward deformation of the wall of the tubular member and thereby deform therein a circumferential indentation. The inner and outer surfaces of the wall of the tubular member are outwardly deformed permanently at the indentation. The expanded baffle wall is firmly and permanently engaged in the indentation and thereby forms a leak-proof closure to block medium within the internal passage from reaching the open end of the tubular member.

REFERENCES:
patent: 2155491 (1939-04-01), Jacobs
patent: 3542076 (1970-11-01), Richardson
patent: 4091841 (1978-05-01), Beneker et al.
patent: 4091842 (1978-05-01), Greenawalt et al.
patent: 4390042 (1983-06-01), Kucherer et al.
patent: 4469357 (1984-09-01), Martin
patent: 4637436 (1987-01-01), Stewart, Jr. et al.
patent: 4646816 (1987-03-01), Rothstein

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