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US 2019/0154295 A1Published application
Pre-fabricated modular fire-rated conduit assembly
AssigneeDurasystems Barriers Inc.
InventorWilliam Christopher Duffy
Life of this patent
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Abstract
A fire-rated conduit assembly. The fire-rated conduit assembly comprises a plurality of pre-fabricated, e.g. factory fabricated, modular sections that are configured to be mechanically assembled to form a continuous fire-rated conduit which is suitable for allowing movement of air, transporting of combustible or hazardous materials, and/or enclosing building mechanical and services.
Claims10
A modular fire-rated exhaust duct assembly comprising:
- two or more exhaust duct modules;
- each of said exhaust duct modules having an inner duct liner and an outer casing, and a plurality of casing spacers configured to form a thermal insulating cavity between at least a portion of space between said inner duct liner and said outer casing, said thermal insulating cavity being configured for receiving an insulation material;
- a first exterior flange connector attached to one end of each of said inner duct liners;
- a second exterior flange connector attached to another end of each of said inner duct liners;
- said first and said second exterior flange connectors being configured to form a field assembly junction for coupling respective ends of said exhaust duct modules to form a connected exhaust duct run;
- and
- a joint connection end formed between said exterior flange connector and said outer casing, said joint connection end being configured to receive a joint insulating material, and further comprising a return configured for receiving a connection edge of a joint cover, said joint cover being configured to encapsulate said joint connection ends of adjacent exhaust duct modules.
4 more elements
Dependencies are inferred from the claim text.