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US 2003/0155722 A1Published application
Drill for smooth- and hex-shank bits
AssigneeRohm Co., Ltd.
InventorHans-Dieter Mack
Life of this patent
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Abstract
A drill has a drive unit having a spindle rotatable about an axis and having an axially forwardly directed front end formed centered on the axis with an axially forwardly open polygonal-section socket dimensioned to fit with a standard-size bit shank, a chuck body mounted on the spindle, rotatable about the axis at the front end, and having an axially forwardly open tool recess, and a plurality of jaws displaceable in the body to grip a bit in the recess.
Claims20
A drill comprising:
- a drive unit having a spindle rotatable about an axis and having an axially forwardly directed front end formed centered on the axis with an axially forwardly open polygonal-section socket dimensioned to fit with a bit shank;
- a chuck body mounted on the spindle, rotatable about the axis at the front end, and having an axially forwardly open tool recess;
- and
- a plurality of jaws displaceable in the body to grip a bit in the recess.
1 more element
Dependencies are inferred from the claim text.