Patent · US Active

Drill bit

US10947788B2 · kind B2 · utility

2Cited by

0References

15Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Guenter DOMANI · Bad Birnbach, DE
Bastian Pluemacher · Pfänderhof, DE
Roland Foser · Schaan, LI

Key dates

Filing date	Apr 19, 2017
Grant date	Mar 16, 2021
Priority date	—
Expiry date	Oct 25, 2037

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23B2251/44
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A drill bit that serves to remove mineral materials and that consecutively has on a longitudinal axis (6) a drill head (2), a helix (3), an insertion end (4) and an impact surface (7) on the end face of the insertion end (4) that faces away from the drill head (2) and that serves to absorb impact along a direction of impact (8), is provided. The drill head (2) has at least two cutting edges (13) and at least two blades (20). The cutting edges (13) each have a cutting face (16) and a free face (17). The blades (20) run parallel to the longitudinal axis (6) and adjoin the cutting edges (13). The blades (20) each have a radially projecting tooth (24) that adjoins the cutting face (16), whereas it adjoins the free face (17) either only partially or not at all. The axial dimension (29) of the tooth (24) is smaller than the axial dimension (25) of the blade (20).

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