Patent · US Active

Method for producing a drill shaft for a wet drill bit

US11724339B2 · kind B2 · utility

0Cited by

5References

4Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Florian SCHROEDER · Maienfeld, CH
Christoph Weber · Heidenheim, DE
Roland Schneider · Schotten, DE

Key dates

Filing date	Nov 28, 2017
Grant date	Aug 15, 2023
Priority date	—
Expiry date	Aug 20, 2040

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23K2101/002
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A method for producing a drill shaft for a wet drill bit includes forming N, where N≥1, strip materials into a tubular body where the tubular body is integrally joined at strip edges of the strip materials by N connection welds. At least one strip material of the strip materials is provided with at least one recess before the integral joining of the strip edges.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.