Clean air ducts and methods for the manufacture thereof

Details Clean air ducts and methods for the manufacture thereof Clean air ducts and methods for the manufacture thereof

1997-10-30

2000-03-28

Brinson, Patrick

Pipes and tubular conduits

Combined

With end structure

138155, 285365, 285407, F16L 900

Patent

active

060418249

ABSTRACT:
A clean air duct (300) comprises a pair of tubular bodies (302, 310), each tubular body having a pair of opposed ends (304, 306, 312, 314), one of the opposed ends of one tubular body having an annular ring (346) which terminates at an inwardly extending lip (340), the other tubular body having an outwardly extending rib (322) at one end; and a cuff (320) connecting the outwardly extending rib and the inwardly extending lip. Another clean air duct (400) comprises a first blow molded tubular body (406) having a first open end (408) and an annular ring (450) which terminates at an inwardly extending lip (444), and a second blow molded tubular body (402) which has an open end (404). A cuff (412) connects the blow molded tubular bodies to one another wherein the lip (444) exerts a compressive sealing force around the second tubular body (402). Both tubular bodies (402, 406) extend from the cuff (412) in the same direction.

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