Plastic duct system and method of fabrication

Details Plastic duct system and method of fabrication Plastic duct system and method of fabrication

2011-08-23

2011-08-23

Stinson, Frankie L (Department: 1711)

Cleaning and liquid contact with solids

Apparatus

For work having hollows or passages

C134S16900A

Reexamination Certificate

active

08002904

ABSTRACT:
A duct system includes at least one duct for communicating air or fluid within a building that has a plurality of openings along the top of the duct along the central axis of the duct. An ingress pipe is coupled to the openings along the top of the duct. A plurality of openings are also provided along the bottom of the duct along the central axis of the duct, with a drain pipe coupled to the opening along the bottom of the duct. A user may inject a fluid into the duct ingress pipe and the fluid is drained and collected from the duct using the drain pipe.

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