Drill chuck for percussion drilling

Details Drill chuck for percussion drilling Drill chuck for percussion drilling

1984-03-07

1985-08-20

Desmond, Eugene F.

Cutting by use of rotating axially moving tool

Tool-support

With tool-retaining means

279 60, B23B 3112

Patent

active

045361096

ABSTRACT:
A drill chuck usable in a drilling device capable of rotary or rotary-percussion drilling, includes radially adjustable clamping jaws with the clamping surfaces of the jaws directed inwardly towards the central axis of the chuck. Each clamping jaw has at least one projection extending radially inwardly from the clamping surface for engagement in correspondingly shaped recesses in the shank of a drilling tool insertable into the chuck. The clamping surfaces form guide surfaces for the drilling tool so that the drilling tool is adequately guided over large surfaces extending in the axial and circumferential directions in the chuck.

REFERENCES:
patent: 3737170 (1973-06-01), Wanner et al.
patent: 4491445 (1985-01-01), Hunger et al.

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