Lockable chuck for hammer drill

Details Lockable chuck for hammer drill Lockable chuck for hammer drill

1979-02-13

1980-07-22

Briggs, William R.

Chucks or sockets

With fluid-pressure actuator

Socket type

279 60, 279 61, B23B 522

Patent

active

042136229

ABSTRACT:
A chuck has a tightening sleeve rotatable on a chuck body about the chuck axis to radially displace a plurality of tool-clamping jaws on the chuck. A bolt is slidable radially in the chuck between an outer position engaged between teeth at the edge of the tightening sleeve preventing rotation of this tightening sleeve relative to the chuck body, and an inner position permitting such rotation. This bolt is urged radially outwardly by a spring and can be radially displaced inwardly when a key is fitted to the chuck to tighten or loosen it.

REFERENCES:
patent: 2702098 (1955-02-01), Staak
patent: 3872951 (1975-03-01), Hastings
patent: 3938817 (1976-02-01), Rohm

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