Chuck for a hammer or rotary impact drill

Details Chuck for a hammer or rotary impact drill Chuck for a hammer or rotary impact drill

1985-04-23

1986-12-09

Weidenfeld, Gil

Chucks or sockets

With fluid-pressure actuator

Socket type

279 193, 279 41R, 279 62, 408241R, B25D 1708

Patent

active

046276262

ABSTRACT:
The chuck for holding a drill bit by its drill bit shaft comprises a chuck body connected to a drive shaft, a mounting opening in the chuck body in which the drill bit shaft is held coaxial with the chuck axis, a plurality of clamp jaws guided in the chuck body so as to be centrally advanceable to and retractable from the chuck axis in the mounting opening, an axial passage in the chuck body between the drive shaft and the mounting opening, through which hammer blows are transmitted to the drill bit shaft found in the mounting opening. In the mounting opening a chuck sleeve is clamped rigidly between the clamp jaws and in the chuck sleeve the drill bit shaft is guided slidably axially.

REFERENCES:
patent: 3765074 (1973-10-01), Payne
patent: 4154450 (1979-05-01), Derbyshire

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