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:
Jan. 09, 1990
Filed:
May. 20, 1988
Josef Theurer, Vienna, AT;
Franz Plasser Bahnbaumaschinen-Industrie GmbH, Vienna, AT;
Abstract
In a mobile machine for tamping ballast under ties of a railroad track, which comprises a machine frame, spaced undercarriages supporting the machine frame for mobility on the railroad track in an operating direction, and a ballast tamping assembly mounted on the machine frame and comprising a vertically adjustable tamping tool carrier, a drive for vertically adjusting the tamping tool carrier, pairs of vibratory and reciprocatory tamping tools immersible in the ballast upon vertical adjustment of the tamping tool carrier, and drives for vibrating and reciprocating the tamping tools: a first device associated with the ballast tamping assembly for gripping and transversely positioning a respective one of the ties, the first device including a drive for vertically adjusting the device, and a second device operable independently of the first device for transversely displacing a respective one of the ties, the second device including a drive for vertically and transversely adjusting the second device.