Patent · US Expired

Drilling tool

US5002139A · kind A · utility

8Cited by

8References

16Claims

0Family size

Assignee

Hawera Probst GmbH · DE

Inventors

August Haussmann · Ravensburg, DE
Wolfgang Peetz · Blitzenreute, DE
Bernhard Moser · Altshausen, DE

Key dates

Filing date	Jul 12, 1989
Grant date	Mar 26, 1991
Priority date	—
Expiry date	Jul 12, 2009

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T408/50
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A drilling tool which is suitable especially for clearing drill dust from a drillhole in rock-drilling work is provided. For this purpose, the spiral shank has brush elements (6, 17) which are arranged in the groove bottom of a conventional drilling tool or which themselves form spiral feed coils.

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