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:
Jun. 13, 2023
Filed:
Jun. 27, 2019
Applicant:
Liebherr-components Biberach Gmbh, Biberach an der Riss, DE;
Inventors:
Norbert Hausladen, Biberach, DE;
Viktor Schindler, Uttenweiler, DE;
Assignee:
Liebherr-Components Biberach GmbH, Biberach an der Riss, DE;
Primary Examiner:
Int. Cl.
CPC ...
E21B 17/07 (2006.01); E21B 3/02 (2006.01);
U.S. Cl.
CPC ...
E21B 17/07 (2013.01); E21B 3/022 (2020.05);
Abstract
A drilling apparatus in the form of a Kelly drilling rig including a drilling tool holder for holding a drill rod, in particular a Kelly bar, which can be rotatably driven by a rotary drive via a gearbox, wherein the gearbox includes a gearbox housing with multiple gearbox elements rotatably mounted therein. At least one plastically deformable shock absorber element for absorbing shocks is provided on at least one of the gearbox elements in the gearbox housing.