View port window with optional illumination and alarm system

Details View port window with optional illumination and alarm system View port window with optional illumination and alarm system

F - Mech Eng,Light,Heat,Weapons

24

F

F24F 13/02 (2006.01) F24F 11/00 (2006.01) G08B 21/12 (2006.01)

Patent

CA 2512303

A flexible inspection and access view port window that conforms to the shape of air ducts present in forced air heating, cooling and ventilation systems and held in place using a border layer which is magnetic or peelable adhesive, so that it can easily be installed, removed and re-installed without tools. This device allows the user to visually inspect the air ducts by sighting the clarity of a graphic viewing target with border attached within the duct. The graphic will be obscured with an accumulation of dust or other contaminants. Air pressure integrity inside the air duct system is maintained without the use of sealing gaskets or screws. The viewer can assist inspection with the aid of an optional light by activating a switch at the time of inspection. An optional dust alarm can also be installed that will trigger an audible or visual alarm when the accumulated dust level inside the duct exceeds a preset threshold.

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