Drill bit for drilling along an arcuate path

Details Drill bit for drilling along an arcuate path Drill bit for drilling along an arcuate path

1991-08-02

1992-09-08

Britts, Ramon S.

Boring or penetrating the earth

Bit or bit element

Bit with leading portion forming smaller diameter initial bore

D15139, E21B 1026

Patent

active

051450186

ABSTRACT:
A drill bit for drilling holes around the corner of a workpiece is provided with a single rounded continuous cutting edge with radiused upper and lower corners to permit free rotation of the cutting head as it is urged along an arcuate path. The bit is of a unique two piece construction permitting selective materials to be utilized in the shank an cutting head portions.

REFERENCES:
patent: 2689131 (1954-09-01), Priest
patent: 2786218 (1957-03-01), Yousem
patent: 3409965 (1968-11-01), Fisher
patent: 4131116 (1978-12-01), Hedrick

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