Patent ID: 7566262
Filing Date: 2009-07-28
Classification: F24F

Abstract:
1. An airflow boosting assembly for installation in a vent opening of a duct system in a forced air circulation and delivery system, said airflow boosting assembly comprising: a housing, said housing having a register plate for covering said vent opening, said register plate having defined therein an air outlet; said housing having an air inlet spaced from said air outlet; a crossflow fan disposed between said air outlet and said air inlet, said crossflow fan having a rotational axis, said crossflow fan being oriented such that said rotational axis is generally parallel to said register plate; an elastomeric motor connector; a motor secured to said housing, said motor being connected to said crossflow fan in a driving relation through said elastomeric motor connector; an elastomeric bearing housing attached to said housing and a bearing resiliently housed in said bearing housing; said crossflow fan having a shaft rotationally supported in said bearing, said bearing housing biasing said crossflow fan toward said motor along a direction generally parallel to said rotational axis; a control circuitry for selectively energizing said motor; two opposing guidance panels defining an airflow passageway formed in said housing for guiding airflow from said air inlet to said air outlet, said airflow passageway varying continuously and gradually along said airflow passageway; said crossflow fan being disposed inside said airflow passageway, and one of said guidance panels having a bypass opening formed therein and a tab disposed adjacent an edge of said bypass opening for guiding air passing therethrough, said tab extending into said passageway in a direction towards said outlet.