ALEXANDRIA, Va., June 19 -- United States Patent no. 12,330,018, issued on June 17, was assigned to TOYOTA JIDOSHA K.K. (Toyota, Japan).

"Exercise system with lower limb exercise device and chair" was invented by Eisuke Aoki (Toyota, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An exercise system includes a rowing exercise device and a chair. The rowing exercise device achieves a lower limb exercise which includes repetitive extension and flexion of at least a knee joint and a hip joint. The chair is the one on which a user who performs the lower limb exercise using the lower limb exercise device sits. The chair includes a seat on which the user sits and a support mechanism capable of supporting the ...