ALEXANDRIA, Va., March 24 -- United States Patent no. 12,582,231, issued on March 24, was assigned to TOYOTA BOSHOKU K.K. (Aichi-ken, Japan).
"Headrest locking device" was invented by Masashi Nakanishi (Toyota, Japan) and Yuki Kano (Minokamo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A headrest locking device comprising a headrest stay and a locking device which is provided in a headrest body which is supported by the headrest stay, wherein the locking device locks the relative movement of the headrest body in the height direction by engaging a notched groove formed in the headrest stay. The locking device comprising a lock plate which is engaged and disengaged against the notched groove by moveme...