Patent Number: 6,254,476

Title: Air circulating fan

Abstract: In a fan for circulating an air stream in an air-treating environment, an improved fan blade structure designed to optimize airflow along the rotational axis of the fan blade within an optimized low decibel sound range and at preselected revolutions per minute.

Inventors: Choi; Kyung-Ju (Jefferson, KY)

Assignee: AAF International, Inc.

International Classification: F04D 29/38 (20060101); F24F 7/007 (20060101); F24F 007/06 ()

Expiration Date: 07/03/2018