Drill

Details Drill Drill

1990-02-27

1991-02-19

Howell, Daniel W.

Cutting by use of rotating axially moving tool

With stopping upon completion of prescribed operation

408113, 408143, 408202, B23B 5100

Patent

active

049938940

ABSTRACT:
A drill for drilling holes in masonry and comprising a depth stop mounted on the drill shank and formed as a resilient anti-vibration element.

REFERENCES:
patent: 2223485 (1940-12-01), Eveleth
patent: 2429375 (1947-10-01), Smith
patent: 2700905 (1955-02-01), Urquhart
patent: 4010807 (1977-03-01), Fischer

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