ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,447,695, issued on Oct. 21, was assigned to Herrmann Ultraschalltechnik GmbH & Co. KG (Karlsbad, Germany).
"Compensation for thermal deformation on sonotrodes" was invented by Ulrich Vogler (Uhldingen-Muhlhofen, Germany) and Stefan Zendler (Straubenhardt, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A sonotrode for an ultrasonic welding apparatus, having a lower portion of length u and an upper portion of length o, the upper portion and the lower portion adjacent on a longitudinal axis of the sonotrode, and the total length of the sonotrode in the direction of the longitudinal axis being u+o, the lower portion having a sealing surface oriented...