ALEXANDRIA, Va., March 24 -- United States Patent no. 12,584,538, issued on March 24, was assigned to Igus GmbH (Cologne, Germany).

"Energy chains for long travels, in particular with rollers" was invented by Andreas Hermey (Hennef, Germany) and Ralf Steeger (Lohmar, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "Energy chains for guiding lines, such as cables, hoses or the like. In roller chains, rollers are provided on at least some chain links for moving the energy chain in a rolling manner, in particular on chain links of the opposite run, the rotational axis of one roller in each case coinciding with the common pivot axis of a pair of side parts of the chain links. Each of the two strands consis...