Drill tip and threaded fastener

Details Drill tip and threaded fastener Drill tip and threaded fastener

1975-12-19

1977-12-27

Britts, Ramon S.

Cutting by use of rotating axially moving tool

Tool or tool with support

Having inversely angled cutting edge

408226, F16B 2500

Patent

active

040647846

ABSTRACT:
A drill tip formed from two elements, each being one-half of a concave-convex spade-like element, the elements being joined integrally, the elements presenting a cutting edge which is a continuous curve extending from one side of the tip to the other through the pilot end of the tip.

REFERENCES:
patent: 1309706 (1919-07-01), Taylor
patent: 3221588 (1965-12-01), Wieber
patent: 3395603 (1968-08-01), Skierski
patent: 3463045 (1969-08-01), Prescott

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