Diamond tool for drilling and routing

Boring or penetrating the earth – Bit or bit element – Core forming type

Patent

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Details

51206P, 175434, 407 54, 408 27, 408 59, 4082035, B23B 2720, E21B 1002, E21B 1060

Patent

active

051370980

ABSTRACT:
A diamond tool for combination drilling and routing. The tool has a shaft end and a cutting end with an aperture therein. The cutting end includes abrasive grit on the outer peripheral surface for routing purposes and has abrasive grit on the terminal end and the surfaces forming the aperture for drilling purposes.

REFERENCES:
patent: 2182562 (1939-12-01), Koebel
patent: 2996061 (1961-08-01), Miller
patent: 3243924 (1966-04-01), Peters
patent: 3495359 (1970-02-01), Smith et al.
patent: 4274769 (1981-06-01), Multakh
patent: 4757645 (1988-07-01), Ozer et al.
patent: 4776862 (1988-10-01), Wiand
patent: 4854788 (1989-08-01), Okinaga

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