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US 5,783,268 AGranted
High air velocity duct board having minimal turbulence
AssigneeKnauf Fiber Glass GmbH
InventorsPatrick M. Noonan, Robert D. Hauk, Frederick M. Beyer
Life of this patent
Estimating the term…
Abstract
A rigid fiber glass duct board for air ducts in which the air contacting surface is a mat facing formed from a saturated polyester/glass mat which presents a smooth surface to flowing air and hence avoids surface degradation at very high air velocities. A method of forming such a board is also disclosed.
Claims45
A rigid air duct for conducting flowing air, the air duct comprising
- a fiber glass board having an interior surface and an exterior surface, the fiber glass board being deformed to cause the interior surface to define a channel for conducting flowing air, and
- a mat facing adhered to the interior surface of the fiber glass board to provide a smooth air-contacting surface lining the channel to maximize laminar flow of air flowing through the channel, the mat facing being a fabric made of glass and organic polymer fibers.
A rigid air duct for conducting flowing air, the air duct comprising
- a fiber glass board having an interior surface and an exterior surface, the fiber glass board being deformed to cause the interior surface to define a channel for conducting flowing air,
- a mat facing in the channel, the mat facing being a fabric made of glass and organic polymer fibers, and
- an adhesive adhering the mat facing to the interior surface of the fiber glass board to provide a smooth air-contacting surface lining the channel to maximize laminar flow of air flowing through the channel.
A rigid air duct for conducting flowing air, the air duct comprising
- a fiber glass board having an interior surface and an exterior surface, the fiber glass board being deformed to cause the interior surface to define a channel for conducting flowing air,
- an acrylic layer applied to the interior surface, and
- a mat facing in the channel, the mat facing being a fabric made of glass and organic polymer fibers, the mat facing being applied directly to the acrylic layer applied to the interior surface of the fiber glass board to provide a smooth air-contacting surface lining the channel to maximize laminar flow of air flowing through the channel.
Dependencies are inferred from the claim text.