ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,415,387, issued on Sept. 16, was assigned to Illinois Tool Works Inc. (Glenview, Ill.).

"Rotary transmission apparatus for the transmission of control and/or working pressures to a fluid duct in the interior of a shaft" was invented by Bruno Schulze Selting (Rielasingen-Worblingen, Germany) and Martin Spindler (Herdwangen-Schonach, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A rotary transmission apparatus (1) for the transmission of control and/or working pressures to a fluid duet (51) which is received or configured at least in regions in the interior of a shaft (50), in particular, a drive shaft. The rotary transmission apparatus (1) has ...