The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 25, 2022
Filed:
Sep. 03, 2018
Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft M.b.h., Vienna, AT;
Lothar Stadler, Vienna, AT;
Abstract
A track maintenance machine for compaction of ballast under sleepers of a track includes a machine frame movable by undercarriages on the track and a tamping unit which includes an electric vibration drive for vibratory actuation of tamping tools. An electric intermediate circuit has an electric energy store or storage device. An electric machine is associated with at least one undercarriage and coupled for generator operation to the intermediate circuit. The electric vibration drive is coupled to the intermediate circuit for supply. In this way, braking energy is used in an optimal manner for supplying the vibration drive. A method for operation of a track maintenance machine is also provided.