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:
Dec. 20, 2016
Filed:
Sep. 01, 2014
Applicant:
Sandvik Intellectual Property Ab, Sandviken, SE;
Inventors:
Rasmus Hemph, Gavle, SE;
Tomas Sh Jansson, Gavle, SE;
Assignee:
SANDVIK INTELLECTUAL PROPERTY AB, Sandviken, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 17/04 (2006.01); E21B 1/02 (2006.01); E21B 17/03 (2006.01); E21B 17/042 (2006.01); E21B 21/00 (2006.01); E21B 1/00 (2006.01);
U.S. Cl.
CPC ...
E21B 17/04 (2013.01); E21B 1/00 (2013.01); E21B 1/02 (2013.01); E21B 17/03 (2013.01); E21B 17/0426 (2013.01); E21B 21/00 (2013.01);
Abstract
A rock drilling shank adaptor includes an elongate body having an internal flushing bore and an entry hole through the sidewall of the adaptor in fluid communication with the internal bore. The flushing hole is optimized to reduce the likelihood of fracture at the wall of the adaptor and in particular includes straight sections at axially forward and rearwardmost regions of the hole.