Hand-held device with tool sensing means

US4830549A · kind A · utility

Assignee

• Hilti Aktiengesellschaft · LI

Inventors

• Anton Neumaier · Fürstenfeldbruck, DE
• Uto Plank · Freising, DE

Key dates

• Filing date: Jun 20, 1988
• Grant date: May 16, 1989
• Expiry date: Jun 20, 2008

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T408/165
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A hand-held device with a holder for a working tool has a sensing mechanism for automatically initiating different operating modes. Different configurations of working tools inserted into the holder can be sensed by sensing elements in the form of balls. The balls cooperate with pivotal levers and a sensor for producing switching signals for initiating a switching operation.