ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,540,677, issued on Feb. 3, was assigned to FLUHS DREHTECHNIK GMBH (Ludenscheid, Germany).
"Valve cartridge" was invented by Tim-Florian Klawin (Halver, Germany) and Lutz Lange (Luedenscheid, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A valve cartridge has a head piece, through the center of which a spindle passes, by which spindle a valve can be actuated which bears against a shoulder formed by a reduced internal diameter of the head piece, the spindle being sealed via at least one O-ring relative to the head piece. A reducing bushing which is sealed via a first O-ring relative to the head piece is inserted in the head piece, the spindle bein...