Hand-held power tool, in particular drill screw driver

Details Hand-held power tool, in particular drill screw driver Hand-held power tool, in particular drill screw driver

1999-01-20

2000-11-07

Vo, Peter

Tool driving or impacting

Automatic control of power operated means

Drive means responsive to torque or speed condition

173178, B23Q 500

Patent

active

061422436

ABSTRACT:
A hand held power tool has a coupling formed for transmission of torques of different values and including at least two coupling parts provided with transmission members for rotary-fixed connection with one another, a coupling spring having an adjustable tensioning force operatable for holding one of the coupling members of one of the coupling parts in a rotary-locked engagement with another of the coupling members of another of the coupling parts, and blocking members with which the coupling parts are rotary-fixed coupled in addition to the transmission members, and which are bringable in engagement with one another in a drilling operation or an impact drilling operation for transmitting a maximum torque.

REFERENCES:
patent: 1883164 (1932-10-01), Vassakos
patent: 3450214 (1969-06-01), Bangerter et al.
patent: 3710873 (1973-01-01), Allen
patent: 4546833 (1985-10-01), Berecz et al.
patent: 5203242 (1993-04-01), Hansson
patent: 5346022 (1994-09-01), Krivec
patent: 5356350 (1994-10-01), Schreiber
patent: 5545109 (1996-08-01), Hayakawa
patent: 5738469 (1998-04-01), Hsu

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