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:
May. 08, 1990
Filed:
Jun. 24, 1988
Josef Theurer, Vienna, AT;
Johann Hansmann, Klosterneuburg, AT;
Abstract
A ballast tamping tool for attachment to a reciprocating tamping drive of a ballast tamping machine comprises a shaft having an upper end affixed to the tamping drive and a tamping blade detachably mounted on a lower end of the shaft. A plug-in, form-fitting connection detachably connects the tamping blade to a lower end of the shaft, the detachable connection defining a recess behind the rear surface of the tamping blade and comprising a plug projecting from the lower shaft end and being offset therefrom by a step to form a shoulder, the upper tamping blade edge extending at least partially along, and axially adjacent, the shoulder, and a connecting part at the rear tamping blade surface form-fittingly connecting the tamping blade to the plug.