ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,434,761, issued on Oct. 7, was assigned to Proterial Ltd. (Tokyo).
"Stroke sensor" was invented by Yohei Shirakawa (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A stroke sensor is provided with two disk-shaped rotors configured to rotate with a stroke of a measuring object, a rotation detecting unit that detects rotations of the two rotors, respectively, and a stroke position detecting unit that detects the stroke position of the measuring object based on the rotations of the two rotors detected by the rotation detecting unit. At least one of the two rotors is in direct contact with the measuring object. The two rotors are provided side by side i...