EP 0463521 B1 19940323 - Method and device for controlling the working of electrically powered hand-tools.
Title (en)
Method and device for controlling the working of electrically powered hand-tools.
Title (de)
Verfahren und Vorrichtung zur Steuerung des Betriebs von Elektrohandgeräten.
Title (fr)
Procédé et dispositif pour commander le fonctionnement d'appareils électriques manuels.
Publication
Application
Priority
DE 4019895 A 19900622
Abstract (en)
[origin: EP0463521A1] In an electrically powered hand-tool, in particular screwdriver and the like, in which a disconnect-type clutch, in particular in the form of a claw clutch, is situated between the drive motor and the tool output shaft, it is proposed to monitor the position of the claw clutch by means of a distance sensor and then to accelerate the drive motor, via a speed-control circuit, controlled by the distant sensor, for said drive motor, to high operating speed and optionally to maintain it at this speed whenever an inwardly directed pressure is exerted on the tool output shaft when screws and the like are being screwed in, by which pressure the disconnect-type clutch is simultaneously caused to close. <IMAGE>
IPC 1-7
IPC 8 full level
B23Q 5/04 (2006.01); B23Q 5/08 (2006.01); B25B 21/00 (2006.01); B25B 23/14 (2006.01); B25B 23/147 (2006.01); B25B 23/157 (2006.01); B25F 5/00 (2006.01)
CPC (source: EP US)
B25B 23/147 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0463521 A1 19920102; EP 0463521 B1 19940323; AT E103227 T1 19940415; DE 4019895 A1 19920102; DE 4019895 C2 19990408; DE 59101221 D1 19940428; ES 2052301 T3 19940701; JP 2614371 B2 19970528; JP H04226869 A 19920817; US 5156221 A 19921020
DOCDB simple family (application)
EP 91109839 A 19910615; AT 91109839 T 19910615; DE 4019895 A 19900622; DE 59101221 T 19910615; ES 91109839 T 19910615; JP 15163091 A 19910624; US 71853891 A 19910621