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:
May. 02, 2017
Filed:
Aug. 27, 2014
Applicant:
Sandvik Intellectual Property Ab, Sandviken, SE;
Inventors:
Tomas Sh Jansson, Gavle, SE;
Andreas Rindeskar, Hofors, SE;
Assignee:
SANDVIK INTELLECTUAL PROPERTY AB, Sandviken, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 17/042 (2006.01); E21B 1/00 (2006.01); E21B 1/02 (2006.01);
U.S. Cl.
CPC ...
E21B 17/0426 (2013.01); E21B 1/00 (2013.01); E21B 1/02 (2013.01);
Abstract
A percussion drilling apparatus is arranged to affect at least one characteristic of a shock wave produced in a drill string. The apparatus includes an elongate energy transmission adaptor having a shock wave modification sleeve configured with a free end and an attachment end projecting radially from an outer surface of the adaptor.