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:
Jul. 22, 2025
Filed:
Feb. 17, 2022
Sandvik Mining and Construction Tools Ab, Sandviken, SE;
Tomas Jansson, Sandviken, SE;
Anders Nordberg, Sandviken, SE;
Sandvik Mining and Construction Tools AB, Sandviken, SE;
Abstract
A shank adapter, forming part of a drilling assembly, has a main body extending axially between a first end and a second end, an externally threaded male spigot portion provided at the second end, and a non-threaded shank positioned axially intermediate the main body and the threaded section. A radially projecting shoulder is positioned axially between the main body and the male spigot portion. The shank has a transition section positioned adjacent to the shoulder at the second end having an outside diameter that increases in a direction from the spigot portion to the shoulder. A cross-sectional shape profile of the outer surface of the transition section has a segment of an ellipse having a semi-major axis (a), a semi-minor axis (b) and an exponential factor (n) according to the equation: A ratio of the semi-major to semi-minor axes (a:b) is within the range 2b<a<8b.