Hand-held tool with detachable tool bit chuck

Details Hand-held tool with detachable tool bit chuck Hand-held tool with detachable tool bit chuck

1987-10-22

1989-04-25

Bilinsky, Z. R.

Cutting by use of rotating axially moving tool

Tool-support

With tool-retaining means

173 48, 279 1B, 279 193, 279 62, 279 72, B23B 3104, B25D 1708

Patent

active

048242985

ABSTRACT:
A hand-held tool for use as a powered drill or screw driver, has a chuck for holding a tool bit, and the chuck is replaceable without employing another tool. A conically shaped shaft section on a rotary spindle fits into a conically shaped bore in a socket section of a part of the chuck. The shaft section and chuck part are secured together by clamping members held in place by a spring. The interconnection affords concentricity and true runout. The rotary spindle is provided with a recess or groove in its outer surface. The groove has an inclined flank closer to the front end of the spindle and the clamping members is biased by the spring against the flank. The spring is displaceable by a gripping sleeve between the biasing position and a released position.

REFERENCES:
patent: 3116068 (1963-12-01), Pfister et al.
patent: 4592560 (1986-06-01), Neumaier et al.
patent: 4621820 (1986-01-01), Rohm

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