Patent · US Expired

Operating device for a hollow drill

US5951217A · kind A · utility

8Cited by

3References

11Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Peter Ostermeier · Dießen, DE
Rudolf Reitberger · Munich, DE

Key dates

Filing date	Sep 14, 1998
Grant date	Sep 14, 1999
Priority date	—
Expiry date	Sep 14, 2018

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T408/895
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An operating device for a hollow drill (1) including a housing (2), a drill receiving chuck (3) supported in the housing (2) for rotation relative thereto, a drive unit (4) for rotating the chuck (3), a bottom element adjoining the chuck (3) at a side of the chuck facing in a direction opposite to a drilling direction, and an arrangement for lifting the bottom element off the chuck (3).

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