ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,286, issued on April 21, was assigned to NEXANS (Courbevoie, France).
"Coupling for multi-walled lines" was invented by Gerald Gunzel (Vechelde, Germany) and Ralf Egerer (Hannover, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A coupling for connecting a first and a second multi-walled line (203,204) having at least two concentric pipes (206,207) has a female coupling part (202) with at least two concentric tubes including an inner and an outer tube (217,218) each connected at one end with one of the concentric pipes (206,207) of the first multi-walled line (204), respectively. The coupling further has a male coupling (201) part having at ...