Patent · US Expired

Rock drill

US5403130A · kind A · utility

9Cited by

5References

19Claims

0Family size

Assignees

Hawera Probst GmbH · DE
Robert Bosch GmbH · DE

Inventors

Bernhard Moser · Altshausen, DE
August Haussmann · Ravensburg, DE
Hans-Ulrich Muetschele · Stuttgart, DE
Harald Schindler · Stuttgart, DE
Hans-Peter Meyen · Wolpertswende, DE

Key dates

Filing date	Oct 29, 1993
Grant date	Apr 4, 1995
Priority date	—
Expiry date	Oct 29, 2013

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T408/909
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A drilling tool and, in particular, a rock drill for the creation of breaches in concrete or masonry for the use of drill hammers is proposed, which is configured as a cross drill bit having four cutting fins. In order to optimize drilling capacity, the drilling tool is provided with a cross drilling head which merges in one piece into a conveyor spiral matched to the drill head. A purpose-specific cutting element facing serves to optimize the drilling capacity.

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