US Patent Issued to Plasser & Theurer Export von Bahnbaumaschinen on June 30 for "Track maintenance machine for tamping a track" (Austrian, Japanese Inventors)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,668,928, issued on June 30, was assigned to Plasser & Theurer Export von Bahnbaumaschinen Gesellschaft m.b.H. (Vienna).

"Track maintenance machine for tamping a track" was invented by Josef Hofstaetter (Puchenau, Austria) and Heinz Springer (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a track maintenance machine for tamping sleepers installed on a ballast bed of a track, comprising a machine frame movable on rail-based running gears, track lifting and lining units for correcting the track geometry as well as two 1-sleeper tamping units arranged one behind the other in the direction of the longitudinal axis of the machin...