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. 20, 2005
Filed:
Dec. 31, 2003
Alain Deniau, Nanterre, FR;
Fabrice Mathieu, Nanterre, FR;
Alain Deniau, Nanterre, FR;
Fabrice Mathieu, Nanterre, FR;
Compagnie Du Sol, Nanterre, FR;
Abstract
Excavator drum for the production of vertical trenches, including a cylindrical shell () mounted so sa to rotate about its axis of revolution and a plurality of excavating tools () mounted on the external face of the shell. The tools include a plurality of first rollers () equipped with cutting elements () mounted so as to rotate about axes, the mid-plane of the rollers substantially merging with the mid-plane (P-P') of the shell, and the length of which is less the an the length of the shell; and a plurality of pairs of second rollers () equipped with cutting elements, the rollers of the same pair being mounted so as to rotate about cantilever axles () each roller having a length at least equal to the distance that separates one end a first roller from the corresponding end of the shell, the casing of the external end of the second rollers being at least in the plane containing one end () of the shell.