EP 0171358 B1 19890628 - DRILLING TOOL FOR HAND DRILLS
Title (en)
DRILLING TOOL FOR HAND DRILLS
Publication
Application
Priority
DE 3429419 A 19840809
Abstract (en)
[origin: US4655651A] A drill bit with an axially elongated shank is suitable for use in all known conventional hand-held drilling machines. The shank is generally cylindrically shaped with axially extending first grooves open at the free rear end face of the shank. Axially extending second grooves are superimposed at least in part on the first grooves and are spaced from the rear end face. Each second groove forms at least one shoulder face disposed transversely of the shank axis and oriented in the direction facing oppositely to the rear end face. Accordingly, the drill bit, due to its first grooves, can be utilized in the chucks presently used in drilling machines and percussion drilling machines. Further, due to the second grooves, the drill bit can be clamped for limited axial movement in the chucks of known hammer drills.
IPC 1-7
IPC 8 full level
B23B 51/10 (2006.01); B23B 51/00 (2006.01); B25D 17/08 (2006.01); B28D 1/14 (2006.01)
CPC (source: EP US)
B25D 17/088 (2013.01 - EP US); B25D 2217/0034 (2013.01 - EP US); Y10T 279/17085 (2015.01 - EP US); Y10T 408/907 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0171358 A2 19860212; EP 0171358 A3 19870826; EP 0171358 B1 19890628; AT E44252 T1 19890715; CA 1239040 A 19880712; DE 3429419 A1 19860220; DE 3571214 D1 19890803; DK 163112 B 19920120; DK 163112 C 19920622; DK 359485 A 19860210; DK 359485 D0 19850807; JP H0472642 B2 19921118; JP S6144505 A 19860304; US 4655651 A 19870407
DOCDB simple family (application)
EP 85810341 A 19850724; AT 85810341 T 19850724; CA 488235 A 19850807; DE 3429419 A 19840809; DE 3571214 T 19850724; DK 359485 A 19850807; JP 15435985 A 19850715; US 76381185 A 19850808