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.

Date of Patent:
Jan. 21, 2014

Filed:

Dec. 29, 2009
Applicants:

Philippe Chagnot, Rueil Malmaison, FR;

Laurent Pivert, Rueil Malmaison, FR;

Inventors:

Philippe Chagnot, Rueil Malmaison, FR;

Laurent Pivert, Rueil Malmaison, FR;

Assignee:

Soletanche Freyssinet, Rueil Malmaison, FR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 19/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An excavation machine including —a mast having a longitudinal direction, —a bar presenting a first end provided with an excavation tool, and —a carriage movable along the longitudinal direction of the mast and including a first holder member for holding the bar relative to the carriage, the carriage being suitable for moving the bar along the longitudinal direction of the mast. The first holder member is pivotable relative to the carriage and by the fact that the first holder member presents a locked state in which the bar is prevented from moving in translation relative to the carriage, and an unlocked state in which the bar is free to move in translation relative to the carriage.


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