EP 0088836 A1 19830921 - An electrically driven screw-driver.
Title (en)
An electrically driven screw-driver.
Title (de)
Elektrisch betätigter Schraubenzieher.
Title (fr)
Tournevis électrique.
Publication
Application
Priority
EP 82301241 A 19820311
Abstract (en)
An electrically driven screw is disclosed in which a ratchet device is mounted to a portion of a chucking shaft provided with a removable driver bit, said chucking shaft (32) being connected to an output shaft (34) of an electric motor (18) through a planetary reduction system (22) and in which a torque controlling mechanism having a clutch function is mounted to the planetary reduction system. In accordance with the electrically driven screw-driver combination of the ratchet device and the torque controlling mechanism permits the screw-driver to be operated in such a way that only the prefastening, or screwing step may be carried out mechanically and electrically while the finishing step of strong fastening may be performed manually, resulting in a very compact and light screw-driver which is very convenient in portability.
IPC 1-7
IPC 8 full level
B25B 21/00 (2006.01)
CPC (source: EP)
B25B 21/00 (2013.01); B25B 21/004 (2013.01); B25B 23/141 (2013.01)
Citation (search report)
- [X] DE 1078958 B 19600331 - HANNS FICKERT, et al
- [Y] US 2179724 A 19391114 - KUEHNE HERMAN H
- [Y] US 3491616 A 19700127 - ALBERT JEAN PAUL
- [Y] US 4078589 A 19780314 - MILLER WALTER L
- [Y] EP 0026738 A1 19810408 - LECUREUX BERNARD
- [A] DE 2513648 A1 19760902 - HOLLAND LETZ FELO WERKZEUG
- [A] FR 2396626 A1 19790202 - TOTSU KATSUYUKI [JP]
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0088836 A1 19830921; EP 0088836 B1 19860924; AT E22406 T1 19861015; DE 3273401 D1 19861030
DOCDB simple family (application)
EP 82301241 A 19820311; AT 82301241 T 19820311; DE 3273401 T 19820311