Duct

Pipes and tubular conduits – Joined sections

Patent

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Details

138109, 285363, 285368, 285424, F16L 900

Patent

active

047653752

ABSTRACT:
An improved duct is proposed which comprises a plurality of duct sections coupled together. Each duct section has a turned-up portion and a flange at one end and a flange at the other end. Both the turned-up portion and the flanges are formed by bending the edge of each duct section. The turned-up portion of one tubular body is inserted into the not-turned-up end of an adjacent tubular body. Bolt holes provided in each section are adapted to align with each other by themselves. Also, the inner edge the packing disposed between the flanges is covered up by the turned-up portion.

REFERENCES:
patent: 3805845 (1974-04-01), Santoro

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