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:
Sep. 05, 1978
Filed:
Mar. 31, 1976
Applicant:
Inventor:
Helmuth von Beckmann, Columbia, SC (US);
Assignee:
Canron Railgroup, West Columbia, SC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E01B / ;
U.S. Cl.
CPC ...
104 12 ; 104 10 ;
Abstract
The present invention relates to a method of an apparatus for tamping the ballast of a railroad track in which a vibration imparting tamping means is inserted into the ballast adjacent a tie to be tamped and the vibration of the tamping means is increased in frequency until it imparts a vibratory excitation to the ballast of between 55 and 75 Hz producing a resultant force directed at an angle towards the underside of the tie to be tamped, whereby to consolidate the ballast beneath and adjacent the tie during the excitation period and thereafter reducing the vibration to below 55 Hz. and withdrawing the tamping head from the ballast.