ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,391,375, issued on Aug. 19, was assigned to Honda Motor Co. Ltd. (Tokyo).
"Blade and rotor" was invented by Takaaki Yasuda (Wako, Japan), Susumu Mashio (Wako, Japan) and Masahiko Asanuma (Wako, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A blade for use in a rotor of an aircraft is swept in a region extending to a blade tip from a first position located between the rotation center of the rotor and the blade tip in a radial direction of the VTOL rotor, the sweep amount increases from the first position toward the blade tip, and the rate of change of the sweep amount in a region extending to the blade tip from a second position located between th...