Patent · US Active

Twist drill and production method

US10245657B2 · kind B2 · utility

0Cited by

3References

7Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Corinna Achleitner · Bludenz, AT
Guenter DOMANI · Bad Birnbach, DE
Mark Winkler · Ridgefield, US
Carsten Peters · Dresden, DE

Key dates

Filing date	Apr 29, 2014
Grant date	Apr 2, 2019
Priority date	—
Expiry date	Jan 31, 2036

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23B2251/406
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The twist drill (1) has a drilling head (3), a continuous two-flute, three-flute to six-flute helix (4) and an insertion end (5) that are arranged consecutively on a drill axis (2). The helix (4) has a radial outer dimension (18) that varies periodically two, three to six times per revolution around the drill axis (2). The invention also relates to a production method for such a drill.

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