ALEXANDRIA, Va., March 24 -- United States Patent no. 12,584,486, issued on March 24, was assigned to DENSO Corp. (Kariya-city, Japan).
"Centrifugal fan" was invented by Ryosuke Inoue (Kariya-city, Japan) and Jun Yamaoka (Kariya-city, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "In a centrifugal fan, a tangent line, which is tangent to a positive pressure surface of a blade and passes through a trailing edge of the blade, is defined as a first tangent line. A virtual circle is centered on a rotational axis and passes through the trailing edge. A tangent line, which is tangent to the virtual circle and passes through the trailing edge, is defined as a second tangent line. An angle, which is placed in ...