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:
Feb. 10, 2015
Filed:
Jul. 02, 2013
Cyril Bouron, Avallon, FR;
Jean-baptiste Magny, Migé, FR;
Pascal Ovize, Chitry le Fort, FR;
Aktiebolaget SKF, Gothenburg, SE;
Abstract
A roller bearing for a tunneller having an inner ring, an outer ring, two sets of rolling elements arranged between the tracks formed on the rings, the first set of rolling elements including at least one roller able to withstand axial stresses and the second set of rolling elements including an angular-contact roller that is able to withstand both radial and axial stresses, the inner and outer rings being concentric about an axis of rotation of the roller bearing. Each roller in the first set includes a first axis of revolution (Y-Y) inclined in relation to the axis of rotation (X-X) by a first angle (α) of between 45° and 95° and each roller in the second set includes a second axis of revolution (Y-Y) inclined in relation to the axis of rotation (X-X) by a second angle (α) of between 0° and 45°.