Patent · US Expired

Variably operable hand-held device

US4878679A · kind A · utility

39Cited by

4References

10Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Uto Plank · Freising, DE
Anton Neumaier · Fürstenfeldbruck, DE
Erwin Manschitz · Germering, DE

Key dates

Filing date	Jul 1, 1988
Grant date	Nov 7, 1989
Priority date	—
Expiry date	Jul 1, 2008

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T408/165
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A hand-held device, such as a hammer drill, has a replaceable axially extending holder for a working tool. The device includes a sensor and a signal transmitter for adjusting its operating characteristics. The holder has through openings containing locking elements and control elements. The locking elements and control elements are radially displaceable within the through openings by a locking sleeve. The position of the locking sleeve in the axial direction of and relative to the holder determines the cooperation of the sensor and the signal transmitters.

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