Chuck key

Details Chuck key Chuck key

1976-12-08

1978-07-04

Simpson, Othell M.

Tools

Wrench, screwdriver, or driver therefor

Plural pivoted jaws and handle-lever

279 1K, B23B 3106

Patent

active

040981525

ABSTRACT:
A chuck key has a key shaft with an key head having four lateral engagement surfaces. A series of bevels are formed in the axial edges of the engagement surfaces adjacent the juncture of the key head and shaft and also each engagement surface continues into a tapered polyhedron surface defining the tip of the key head, so that the key will be thrown out of a chuck if the chuck begins to rotate.

REFERENCES:
patent: 1428566 (1922-09-01), Timmerman

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