ALEXANDRIA, Va., June 4 -- United States Patent no. 12,320,348, issued on June 3, was assigned to OINA VV AB (Nacka, Sweden).

"Peristaltic pump" was invented by Torbjorn Hedevarn (Vasteras, Sweden).

According to the abstract* released by the U.S. Patent & Trademark Office: "A peristaltic pump includes a motor, a rotor coupled to the motor, a housing in which the rotor is arranged, and an opening and closing mechanism. The mechanism includes a tube pressuring portion, a slider, and a pivotable cover coupled to the housing and the slider and the mechanism is connected to the slider and the tube pressuring portion such that a tube engaging surface of the tube pressuring portion slides towards and away from the rotor upon closing and opening ...