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:
Apr. 30, 1996
Filed:
Aug. 29, 1994
Applicant:
Inventors:
Ernesto Romani, Rome, IT;
Livio Abbruzzese, Rome, IT;
Josef Theurer, Vienna, AT;
Herbert Worgotter, Gallneukirchen, AT;
Friedrich Oellerer, Linz, AT;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E01B / ;
U.S. Cl.
CPC ...
104-2 ; 238-2 ; 37104 ; 171 16 ;
Abstract
An arrangement for installing a protective layer between a subgrade and a layer of ballast of a track bed includes an excavating unit to remove ballast from underneath the track and a subgrade stabilizing unit by which additives are disposed directly over the exposed subgrade and blended underneath the track with the subgrade for formation of a protective layer following a leveling and compacting process. Removed and cleaned ballast is then laid by a conveyor over the new protective layer.