EP 0136854 A1 19850410 - Screwdriver with shaped blade tip.
Title (en)
Screwdriver with shaped blade tip.
Title (de)
Schraubenzieher mit besonders geformter Klingenspitze.
Title (fr)
Tournevis avec bout de lame façonné.
Publication
Application
Priority
- ZA 831927 A 19830921
- ZA 842395 A 19840330
Abstract (en)
A screwdriver (by which term screwdriver drill bits and the like are included) which has an operative blade with an arcuate groove in each face adjacent the tip and forming, with the end face thereof, an acute angle, the groove extending across the entire blade width in each case and having a maximum depth chosen to provide, at the position of maximum depth of the grooves, a minimum thickness to the blade of between 75% and 95% of said thickness of the blade tip said position of maximum depth being located at a distance of from 40% to 100% of said blade tip thickness from the edge of the blade tip.
IPC 1-7
IPC 8 full level
B25B 15/00 (2006.01)
CPC (source: EP)
B25B 15/007 (2013.01)
Citation (search report)
- DE 2637131 A1 19771027 - KOLLER HERMANN
- GB 2037925 A 19800716 - GOTTELIER A J D
- US 3923088 A 19751202 - ARNN EDWARD T
- US 4105056 A 19780808 - ARNN EDWARD T
- US 1479506 A 19240101 - FRANCIS KELLEMEN HENRY
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0136854 A1 19850410; AU 3289784 A 19850328; BR 8404729 A 19850813; ZA 842395 B 19851127
DOCDB simple family (application)
EP 84306167 A 19840910; AU 3289784 A 19840911; BR 8404729 A 19840920; ZA 842395 A 19840330