ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,040, issued on Dec. 16, was assigned to EXEDY Corp. (Neyagawa, Japan).
"Power transmission device" was invented by Yoshihiro Matsuoka (Neyagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A torque converter includes a lock-up device, an urging member, a cover, an impeller, a turbine, a first hydraulic chamber, and a second hydraulic chamber. The lock-up device includes a clutch part and a piston. The urging member urges the piston toward the clutch part. A first oil pathway communicates with the first hydraulic chamber. A second oil pathway communicates with the second hydraulic chamber. A switch is provided. In a first switch position, hy...