Filtered cold air baseboard return

Details Filtered cold air baseboard return Filtered cold air baseboard return

1991-06-20

1993-01-05

Joyce, Harold

Ventilation

Having inlet airway

Including specific air distributor

55481, 55502, 55511, 55DIG31, 454331, F24F 1308

Patent

active

051765705

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.

REFERENCES:
patent: 2575499 (1951-11-01), Manow
patent: 2754747 (1956-07-01), Bertling
patent: 2825500 (1958-03-01), McLean
patent: 3458130 (1969-07-01), Juhlin
patent: 3999969 (1976-12-01), Shuler
patent: 4175936 (1979-11-01), Lough et al.
patent: 4334899 (1982-06-01), McConnell
patent: 4411254 (1983-10-01), Field et al.

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