US Patent Issued to Plasser & Theurer Export von Bahnbaumaschinen on Nov. 3 for "Tamping unit for tamping a track" (Japanese Inventor)

ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,781,444, issued on Nov. 3, was assigned to Plasser & Theurer Export von Bahnbaumaschinen Gesellschaft m.b.H. (Vienna).

"Tamping unit for tamping a track" was invented by Heinz Springer (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A tamping unit for tamping a track has tamping tools arranged in pairs. The tamping tools can be squeezed towards each other by a respective squeezing cylinder. A squeezing piston can be subjected to a hydraulic pressure of a first hydraulic circuit arranged in the respective squeezing cylinder. A vibration piston is assigned to each squeezing cylinder to superimpose a vibration on a squeezing movement. The vibration pi...