Apparatus for a fire-rated duct

Details Apparatus for a fire-rated duct Apparatus for a fire-rated duct

2007-03-27

2007-03-27

Hewitt, James M. (Department: 3679)

Pipe joints or couplings

Materials

Sheet

C285S405000, C138S109000, C138S155000, C138SDIG010

Reexamination Certificate

active

10705967

ABSTRACT:
A duct system comprising duct sections which are factory manufactured and field modifiable. The field modifiable duct system comprises fire resistant materials and is fire-rated. The duct sections when assembled create a continuous conduit that allows air to flow from a fresh air source to the required area of the building.

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Canadian Office Action, dated Aug. 2, 2006, Canadian Patent Application No. 2,450,977 (3 pages).

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