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. 29, 2011
Filed:
May. 09, 2003
Applicants:
Patrik Wahlström, Fagersta, SE;
Johan Ericson, Fagersta, SE;
Inventors:
Patrik Wahlström, Fagersta, SE;
Johan Ericson, Fagersta, SE;
Assignee:
Atlas Copco Secoroc AB, Fagersta, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In percussion rock drilling a screw joint for a drill run or drill string including male and female screw threads () on the elements () are joined together to form a drill string. Within the screw joint the male thread () and the female thread () have a trapezoidal shape and a slight conical inclination.