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:
Oct. 28, 2025
Filed:
Dec. 07, 2023
Breakthrough Design, Antony, FR;
François Guy Jacques René Millet, Antony, FR;
BREAKTHROUGH DESIGN, Antony, FR;
Abstract
A device for guiding a drilling tool in rotation, the device including a tubular longitudinal element, a transmission shaft passing longitudinally through the tubular element, the shaft being rotatably mounted in the tubular element for rotating the drilling tool, the guiding device including bearing blocks mounted between the tubular element and the shaft, each bearing block being attached to at least one attachment region on the shaft, characterized in that the bearing block including at least one tapered bore ball-joint roller bearing, wherein at least in the attachment region, the shaft has a taper less than or equal to 1:12 and/or bend radii greater than 1/12of the outer diameter of the shaft.