ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,052, issued on March 18, was assigned to Daimler Truck AG (Leinfelden-Echterdingen, Germany).

"Injector sleeve for an injector, and blowing device and internal combustion engine" was invented by Moritz Schumacher (Schorndorf, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "An injector sleeve for an injector for introducing a gaseous fuel into a combustion chamber of an internal combustion engine includes an intake in which the injector is at least partially receivable. A lateral surface on an external periphery has a longitudinal region around which a coolant flowing through a cooling chamber of the internal combustion engine is flowable. A ...