ALEXANDRIA, Va., July 28 -- United States Patent no. 12,691,428, issued on July 28, was assigned to AVL LIST GMBH (Graz, Austria).

"Conditioning system for a test bench" was invented by Wolfgang Rath (Bocksdorf, Austria) and Vedran Burazer (Graz, Austria).

According to the abstract* released by the U.S. Patent & Trademark Office: "To condition an operating medium in a test object circuit (PK) of a test object (P) on a test bench to a desired temperature as quickly as possible, the invention proposes providing a mixing unit (3), there being provided, in the mixing unit (3), a mixing region (28) in which operating medium of the test object circuit (PK) can be mixed with preconditioned operating medium from a conditioning circuit (KK) in ord...