Self-tightening drill chuck

Details Self-tightening drill chuck Self-tightening drill chuck

1990-04-16

1991-02-12

Bilinsky, Z. R.

Chucks or sockets

Socket type

Obliquely guided reciprocating jaws

408240, B23B 3112

Patent

active

049918591

ABSTRACT:
A self-tightening drill chuck has a chuck body adapted to be mounted on a drill spindle for rotation about an axis and a tightening sleeve surrounding the body and formed with a substantially frustoconical seat centered on the axis and having a front end turned away from the chuck body and formed with a plurality of radially inwardly open, angularly offset, and axially extending grooves. The sleeve is secured on the chuck body for rotation about the axis thereon but against axial movement thereon. A jaw guide in the sleeve formed with a plurality of axially forwardly open and angularly spaced slots has a front end formed with respective radially outwardly projecting ridges engaged in the grooves. Respective jaws are axially and radially displaceable in the slots and on the seat.

REFERENCES:
patent: 4272087 (1981-06-01), Rohm
patent: 4274642 (1981-06-01), Wunsch
patent: 4607855 (1986-08-01), Rohm
patent: 4880246 (1989-11-01), Rohm

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