ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,728,780, issued on Sept. 8, was assigned to SEOYON E-HWA Co. LTD. (Anyang, South Korea).
"Knob-interlocking armrest assembly" was invented by Jae Min Kim (Ansan, South Korea) and Bong Ju Choi (Anyang, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "The armrest assembly includes a locking device for restricting an armrest when the armrest assumes a locking posture, thereby limiting rotation of the armrest. The locking device includes a lock shaft fixed on the center of rotation of the armrest and a lock provided at the armrest so as to be movable in a locking direction approaching the lock shaft and an unlocking direction away from the lock sh...