Liquid heaters and vaporizers – Water tube – Flat
Patent
1990-04-05
1991-03-05
Davis, Jr., Albert W.
Liquid heaters and vaporizers
Water tube
Flat
1223671, 12223516, 165140, 165170, 237 19, 29890039, F22B 1500, F22B 3710
Patent
active
049969501
ABSTRACT:
A double pipe is disclosed for mixed boilers comprising rectilinear segments in which the two duct sections are juxtaposed laterally. Each section (A,B) is defined, on its side the furthest away from the other section, by a plate (1,7) whose two longitudinal borders (2,3,8,9) are curved and are welded against the longitudinal borders of an intermediate partition (4) and this intermediate partition has stamped bosses (5) whose tops (6) are in contact with said plates and are fixed thereto.
REFERENCES:
patent: 1823919 (1931-09-01), Smith
patent: 4655174 (1987-04-01), Fillios
Chaffoteaux et Maury
Davis Jr. Albert W.
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