ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,528,677, issued on Jan. 20, was assigned to MANITOWOC CRANE GROUP FRANCE SAS (Dardilly, France).
"Emergency-operation valve block for a mobile crane" was invented by Johannes Schurmann (Jever, Germany), Thomas Schmithusen (Schortens, Germany), Verena Bohmann (Wardenburg, Germany) and Harald Wiesner (Wangerland, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "An emergency-operation valve block includes: a drive port for hydraulically connecting the valve block to an emergency drive of a mobile crane, at least two drive mechanism ports for hydraulically connecting the valve block to one drive mechanism of the mobile crane each, at least two closing...