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:
Nov. 04, 2008
Filed:
Apr. 07, 2004
Applicant:
Lars Holmgren, Sala, SE;
Inventor:
Lars Holmgren, Sala, SE;
Assignee:
Atlas Copco Secoroc AB, Fagersta, SE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 10/38 (2006.01);
U.S. Cl.
CPC ...
Abstract
A drill bit assembly for direct removal of rock with a rotatable bit assembly () that includes a plurality of cutters or choppers (). According to the invention, an number of cutters () are so disposed in relation to each other or the bit assembly () that a subsequent cutter (), seen in the direction of rotation, will engage an edge created by the action of preceding cutter ().