EP 0090187 A3 19860129 - SCREWING DEVICE
Title (en)
SCREWING DEVICE
Publication
Application
Priority
DE 3210889 A 19820325
Abstract (en)
[origin: US4502549A] A helical spring couples a drive shaft geared to the motor with the work spindle. With this arrangement hard screwdriving operations can be extended in time so that time is added for the drive motor to come a stop after it is switched off. Transducers are provided for measuring the torque at which motor switch-off occurs, and also the cumulative angle of rotation, the latter for detecting defective screws. No switchdown of the drive speed is necessary before the screw is driven home.
IPC 1-7
IPC 8 full level
B25B 23/151 (2006.01); B25B 21/00 (2006.01); B25B 23/14 (2006.01); B25B 23/147 (2006.01)
CPC (source: EP US)
B25B 21/00 (2013.01 - EP US); B25B 21/007 (2013.01 - EP US); B25B 23/14 (2013.01 - EP US); B25B 23/147 (2013.01 - EP US)
Citation (search report)
- [X] DE 2123364 A1 19711125
- [X] FR 2121285 A5 19720818 - ROCKWELL MFG CO
- [X] US 3982419 A 19760928 - BOYS JOHN T
- [Y] US 2228032 A 19410107 - MACGREGOR JOHN R, et al
- [Y] US 3839662 A 19741001 - N GUYEN VAN T, et al
- [Y] US 2260036 A 19411021 - KUEHNI HANS P
- [A] DE 2637954 A1 19780302 - ROBEL GEORG GMBH & CO
- [X] PATENTS ABSTRACTS OF JAPAN, Band 4, Nr. 84 (M-16)[566], 17. Juni 1980, Seite 157 M 16; & JP - A - 55 44 136 (YUTANI TETSUKOU K.K.) 28.03.1980
Designated contracting state (EPC)
DE GB IT SE
DOCDB simple family (publication)
EP 0090187 A2 19831005; EP 0090187 A3 19860129; DE 3210889 A1 19830929; JP S58171270 A 19831007; US 4502549 A 19850305
DOCDB simple family (application)
EP 83101975 A 19830301; DE 3210889 A 19820325; JP 4731583 A 19830323; US 46683683 A 19830216