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:
Aug. 08, 2023
Filed:
Dec. 07, 2021
Eurodrill Gmbh, Drolshagen, DE;
Tobias Moscaritolo, Meinerzhagen, DE;
EURODRILL GmbH, Drolshagen, DE;
Abstract
The invention relates to a drill drive device () for an earth drilling apparatus with a spindle arrangement which has an inner spindle unit () and an outer spindle unit () that is supported in an axially displaceable manner on the inner spindle unit () and floating between two spring means (). According to the invention provision is made in that a first front spring means () which is arranged on a drilling tool side comprises a combination of at least a compression coil spring and a first disk spring arrangement () and in that a second rear spring means () which faces away from the drilling tool side has a second disk spring arrangement ().
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile