ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,489,334, issued on Dec. 2, was assigned to MAZDA MOTOR Corp. (Hiroshima, Japan).
"Motor bearing system" was invented by Yuma Miyauchi (Aki-gun, Japan) and Runa Suzuki (Aki-gun, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A motor bearing system has: a slide bearing operable as a gas-lubricated bearing by gas supplied from a pump; a rolling bearing; a switching mechanism switching between the slide bearing and the rolling bearing; and a controller. When a motor rotation speed is lower than a first speed, the controller controls the switching mechanism to apply the rolling bearing. When the motor rotation speed is equal to or higher than the first ...