Power drill having drill chuck tightener

Details Power drill having drill chuck tightener Power drill having drill chuck tightener

1989-06-07

1990-04-10

Howell, Daniel

Cutting by use of rotating axially moving tool

Tool-support

With tool-retaining means

279 1K, 279 60, B23B 3106

Patent

active

049155555

ABSTRACT:
A reversible power drill having a drill chuck tightener is disclosed. The drill has a body and chuck reversibly rotatable with respect to the body. The tightener comprises a lever or a contact post attached to the body of the drill and an impact button attached to the back portion of the chuck of the drill wherein the lever or post impacts the impact button as the chuck rotates, thereby tightening or loosening the chuck depending upon the direction of rotation of the drill. The lever or post is biased by a spring into a position which disengages it from the impact button when not in use.

REFERENCES:
patent: 2716555 (1955-08-01), Rowe
patent: 4317578 (1982-03-01), Welch
patent: 4389146 (1983-06-01), Coder
patent: 4460296 (1984-07-01), Sivertson, Jr.
patent: 4752161 (1988-06-01), Hill
patent: 4752165 (1988-06-01), Wanner

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