ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,420,287, issued on Sept. 23, was assigned to Metso USA Inc. (Brookfield, Wis.).
"Eddy current brake for a crusher" was invented by Leon Paul Heinrich Bei Der Sandwisch (Neuenkirchen, Germany) and Guido Leuschen (Bielefeld, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A braking system for use with a crusher having a moving crushing member and a stationary crushing member. The braking system is positioned and is operable to restrict rotational movement of the moving crushing member. The braking system includes a braking disc or plate and one or more braking yokes that each include a magnetic member, such as a permanent magnet or an electric mag...