Patent · US Active

Cutting section for a drill bit

US11504881B2 · kind B2 · utility

0Cited by

1References

19Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Florian SCHROEDER · Maienfeld, CH
Guenter DOMANI · Bad Birnbach, DE
Pingyan RONG · Feldkirch, AT

Key dates

Filing date	Dec 11, 2018
Grant date	Nov 22, 2022
Priority date	—
Expiry date	Dec 11, 2038

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23B2265/32
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A cutting section (11) which is connectable to a drill shaft section via a releasable connecting device. The cutting section includes a first open tubular element (14) which is in the form of a first hollow cylinder having a first waved, trapezoidal or zigzag-shaped cross-sectional area, a second closed tubular element (15) which is in the form of a second hollow cylinder having a circular ring-shaped cross-sectional area, and one or more drill segments (16) which are connected to the first open tubular element (14) and to the second closed tubular element (15).

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