Hand-held machine tool

Details Hand-held machine tool Hand-held machine tool

2006-06-06

2006-06-06

Smith, Scott A. (Department: 3721)

Tool driving or impacting

Automatic control of power operated means

C173S176000, C173S178000, C173S217000

Reexamination Certificate

active

07055620

ABSTRACT:
The invention is based on a hand power tool having an electric motor (12) located in a housing (10), via which an insertable tool (16) situated in a tool mount (14) is capable of being driven in a rotating manner, and having a safety device (18) with which a characteristic value for an occurrence of uncontrolled blockage of the insertable tool (16) can be detected via a sensor unit (20), and the movement of the housing (10) can be decelerated.It is proposed that the safety device (18) is formed at least partially by a motor control unit (22), via which the electric motor (12) can be actively decelerated when an occurrence of uncontrolled blockage of the insertable tool (16) is detected.

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