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.:

US 9157209 B1

Date of Patent:

Oct. 13, 2015

Filed:

May. 02, 2013

Helical drill bit for an auger of a ground excavation assembly, in particular for building excavated piles, and drilling method that uses such a bit

Applicant:

Soilmec S.p.a., Cesena (FC), IT;

Inventors:

Ezio Biserna, Cesena, IT;

Daniele Vanni, Cesena, IT;

Assignee:

SOILMEC S.P.A., Cesena (FC), IT;

Attorney:

Lucas & Mercanti, LLP

Primary Examiner:

Benjamin Fiorello

Assistant Examiner:

Kyle Armstrong

Int. Cl.

CPC ...

E21B 10/44 (2006.01); E02D 7/30 (2006.01); E21B 17/12 (2006.01); E21B 7/00 (2006.01); E21B 10/26 (2006.01);

U.S. Cl.

CPC ...

E02D 7/30 (2013.01); E21B 7/005 (2013.01); E21B 10/26 (2013.01); E21B 10/44 (2013.01); E21B 17/12 (2013.01);

Abstract

The helical drill bit defines a helical end section of a helical structure formed at its periphery by an auger of an excavation assembly, and it is associated or associable with a support portion of the auger. Such a support portion defines a proximal section of the helical structure, which has an extension substantially centered around a longitudinal axis (X-X). The helical drill bit is adapted to rotate about the longitudinal axis (X-X) together with the support portion so as to drill a hole in the ground. The helical end section extends around an extremity axis (Y-Y; Ψ-Ψ) that is not aligned relative to the longitudinal axis (X-X).

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