ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,415,977, issued on Sept. 16.
"Plug flow fermenter for a biogas plant" was invented by Michael Niederbacher (Bruneck, Italy).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a fermenter vessel (1) of a biogas plant, having at least one height-adjustable agitator (8), wherein the agitator (8), in the fermenter vessel (1), is guided with a guide element (17) on a guide rail (9) oriented approximately vertically in a vertical axis direction and is held in height-adjustable fashion by means of a traction cable (10). According to the invention, a traction force measuring device (22; 25) is provided for directly and/or indirectly measuri...