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US 5,176,570 AGranted
Filtered cold air baseboard return
OwnerLoren Liedlinventor
Life of this patent
Estimating the term…
Abstract
A filtered cold air return register particularly for base board units which provides for a removable replacement filter section in combination with the normally provided duct covering or end section. The unit provides a filter device for the return air prior to its recycling by the furnace or air conditioning fan.
Claims2
A filtered cold air baseboard return for use with forced air heating systems which systems includes ductwork for forced and return air transmittal, such return including:
- a) a duct end covering arranged and constructed for placement on and attachment to the end of a cold air return duct;
- b) said duct end covering having an air flow passage therethrough for receiving air from an area and returning it to the forced air system;
- c) the front surface of said duct end covering providing a substantially flat surface;
- d) means for positioning a filter medium in filtering relation to said air flow passage and against said frontal surface of said duct end;
- e) said filter positioning means including a housing of a size to cover said air flow passage of said duct end;
- f) said housing including means for removeably positioning a filtering medium therein;
- g) said housing including means for positioning an air seal in position surrounding said filtering medium and in position to seal against said frontal surface of said duct end;
- and
- h) means for removably attaching said filter positioning housing to said duct end.
6 more elements
Dependencies are inferred from the claim text.