US Patent Issued to KNORR-BREMSE Systeme fuer Nutzfahrzeuge on March 25 for "Piston assembly for an unloader valve of an air compressor" (French, German Inventors)

ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,955, issued on March 25, was assigned to KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH (Munich).

"Piston assembly for an unloader valve of an air compressor" was invented by Joerg Mellar (Ebersberg, Germany), Jean-Baptiste Marescot (Manerbe, France), Bertrand Chirot (Auberville, France), Arnaud Chazelles (Saint Sebastian sur Loire, France) and Jean-Louis Mezza (Marolles, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A piston assembly for an unloader valve of an air compressor includes an unloader piston having an end portion with a first bore of a first bore diameter, an intermediate portion with a second bore of a second bore diameter and a...