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.

Date of Patent:
Sep. 28, 2021

Filed:

Jul. 30, 2020
Applicant:

Betek Gmbh & CO KG, Aichhalden, DE;

Inventors:

Ulrich Kraemer, Wolfach, DE;

Heiko Friederichs, Aichhalden, DE;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21C 35/18 (2006.01); E21C 35/193 (2006.01); E21C 35/197 (2006.01); E21C 35/19 (2006.01);
U.S. Cl.
CPC ...
E21C 35/18 (2013.01); E21C 35/197 (2013.01); E21C 35/1933 (2013.01); E21C 35/19 (2013.01);
Abstract

A round-shank pick having a pick head and a pick shank that includes a supporting element pierced along its longitudinal center axis by a mounting hole with an inside diameter for receiving the pick shank. A collar height, measured in the direction of the longitudinal center axis between an end, facing away from the seat surface, of the centering extension and the seat surface or between the end of the centering extension and an inner termination of a recess that is integrally formed in the supporting element in an indented manner with respect to the seat surface, is configured such that the ratio between the inside diameter of the mounting hole in the supporting element and the collar height is less than 8, and/or that the collar height is greater than an axial clearance of the pick mounted in a pick holder.


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