ALEXANDRIA, Va., March 26 -- United States Patent no. 12,257,989, issued on March 25, was assigned to Robert Bosch GmbH (Stuttgart, Germany).
"Accumulator piston device" was invented by Marcus Ertle (Immenstadt, Germany), Alexander Bareiss (Immenstadt, Germany), Juergen Reiner (Gestratz, Germany) and Michael Loeffler (Oberstaufen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "An accumulator piston device having an accumulator piston which, on a circumference of a first shaft portion, has a first guide ring which surrounds the piston shaft and which protrudes radially over an externally dimensionally larger second shaft portion of the piston shaft."
The patent was filed on March 3, 2022, under Appli...