Pneumatically self-clearing chuck
OwnerGunter H. Rohminventor
Life of this patent
Estimating the term…
Abstract
The chuck is used with a drill drive unit having a spindle extending along and rotatable about an axis. The chuck has a chuck body fixed on the spindle and formed with an axially forwardly open tool recess on the axis, a plurality of angularly spaced and angled guide holes opening into the recess and having inner surfaces, and a respective grit-clearing passage opening at a respective front end into each of the guide holes axially rear-ward of the recess. Respective jaws displaceable in the guide holes have outer surfaces riding on the inner surfaces of the respective guide holes and have front ends in the recess. An adjustment sleeve is rotatable about the axis on the body and interengaging formations on the sleeve and on the jaws displace the jaws radially on rotation of the sleeve about the axis.
Claims25
In combination with a drill drive unit having a spindle extending along and rotatable about an axis, a chuck comprising:
- a chuck body fixed on the spindle and formed with
- an axially forwardly open tool recess on the axis,
- a plurality of angularly spaced and angled guide holes opening into the recess and having inner surfaces, and
- a respective grit-clearing passage opening at a respective front end into each of the guide holes axially rearward of the recess;
- respective jaws displaceable in the guide holes, having outer surfaces riding on the inner surfaces of the respective guide holes, and having front ends in the recess;
- an adjustment sleeve rotatable about the axis on the body;
- and
- means including interengaging formations on the sleeve and on the jaws for displacing the jaws radially on rotation of the sleeve about the axis.
In combination with a drill drive unit having a spindle extending along and rotatable about an axis, a chuck comprising:
- a chuck body fixed on the spindle and formed with
- an axially forwardly open tool recess on the axis,
- a plurality of angularly spaced and angled guide holes opening into the recess and having inner surfaces, and
- a respective grit-clearing passage opening at a respective front end into each of the guide holes axially rearward of the recess;
- respective jaws displaceable in the guide holes, having outer surfaces riding on the inner surfaces of the respective guide holes, and having front ends in the recess, each of the jaws being formed with at least one longitudinally extending groove opening into the recess and communicating with the respective passage front end;
- an adjustment sleeve rotatable about the axis on the body;
- and
- means including interengaging formations on the sleeve and on the jaws for displacing the jaws radially on rotation of the sleeve about the axis.
Dependencies are inferred from the claim text.