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. 27, 2014
Filed:
Nov. 17, 2009
Applicants:
Lars Kandelin, Tampere, FI;
Timo Muuttonen, Siuro, FI;
Pekka Saukko, Tottijärvi, FI;
Inventors:
Assignee:
Sandvik Mining and Construction Oy, Tampere, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25D 9/14 (2006.01); B25D 9/18 (2006.01); B25D 9/26 (2006.01); B25D 17/06 (2006.01);
U.S. Cl.
CPC ...
B25D 9/14 (2013.01); B25D 9/18 (2013.01); B25D 9/26 (2013.01); B25D 17/06 (2013.01);
Abstract
A rock drilling machine equipped with an axial bearing having at least one axial piston for setting the axial position of a drill shank and for damping stress pulses returning from the rock. The axial bearing includes a module that is detachable in one piece from one installation direction. The axial bearing module includes all necessary seals, bearing surfaces, and a module frame. Supporting forces caused by the operation of the axial bearing are transmitted of support members in the module frame directly to the body of the rock drilling machine, which is a uniform piece at least at the axial bearing.