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:
Oct. 04, 2005

Filed:

Dec. 05, 2001
Applicants:

Patrizio Comacchio, Riese Pio, IT;

Pasqualino Comacchio, Riese Pio, IT;

Renzo Comacchio, Riese Pio, IT;

Inventors:

Patrizio Comacchio, Riese Pio, IT;

Pasqualino Comacchio, Riese Pio, IT;

Renzo Comacchio, Riese Pio, IT;

Assignee:

Comacchio S.r.l., Reise Pio X (TV), IT;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B019/16 ;
U.S. Cl.
CPC ...
Abstract

The invention is a new drill for making micropiles, equipped with a mast on which the head-carrying trolley slides and having at the bottom of the mast two pairs of vices, a lower fixed vice and a upper unscrewing vice. Besides being able to rotate around the drilling axis, the unscrewing vice is able to move along said mast with respect to the lower fixed vice. The advantages are considerable, since it is no longer necessary to dismantle the rod and the covering during the extraction stages.


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