ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,031, issued on Dec. 9, was assigned to TETRA LAVAL HOLDINGS & FINANCE S.A. (Pully, Switzerland).

"Sealing device for a packaging machine, packaging machine having a sealing device and method of operating a sealing device" was invented by Fabio Soci (Modena, Italy).

According to the abstract* released by the U.S. Patent & Trademark Office: "There is described a sealing device for sealing packages filled with a pourable product within a packaging machine. The sealing device has at least one sonotrode comprising at least a sonotrode head and a vibration control unit connected to the sonotrode head and configured to actuate ultrasonic vibrations of the sonotrode head. The vibration co...