ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,781,814, issued on Nov. 3, was assigned to COMTESCO Corp. (Gifu-ken, Japan).
"Brake device" was invented by Hiromi Nagayama (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A brake device includes a brake mechanism including a shaft received in a brake chamber capable of being filled with a liquid, the brake mechanism being configured to switch between a braking applied state, in which the brake mechanism restricts a rotational motion of the shaft by generating a braking force, and a braking released state, in which the brake mechanism permits the rotational motion of the shaft by not generating the braking force. In the brake device, the brake cham...