Drill, drill chuck, and methods of chucking and unchucking

Details Drill, drill chuck, and methods of chucking and unchucking Drill, drill chuck, and methods of chucking and unchucking

1980-08-18

1983-07-26

Garrett, Robert E.

Cutting by use of rotating axially moving tool

Miscellaneous

Drill guide

279 1K, 279 62, 81 90A, B25B 1344, B23B 3106

Patent

active

043951708

ABSTRACT:
A portable electric drill is provided with a keyless slidable jaw chuck having three slidable jaws provided with externally extending teeth mounted within a chuck body having three slideways for the chuck jaws and a traverse nut rotatable on the chuck body having internal threads engaged with the chuck jaws, and a locking shell slidable relative to the traverse nut so as to rotate together relative the chuck body. Teeth, lugs or other projections on the rearward annular face of the shell selectively matingly cooperate with teeth, lugs or similar projections provided on the drill housing so that, when the shell is slid rearwardly towards the drill housing the shell and traverse nut are held against rotation relative the drill housing upon actuation of the drill to rotate the chuck body, the chuck jaws will be automatically extended or retracted, depending upon the drill rotation direction, to chuck or unchuck a drill bit or other accessory inserted therebetween.

REFERENCES:
patent: 833351 (1905-07-01), Townsend
patent: 1985242 (1934-12-01), De Back
patent: 2684856 (1950-03-01), Stoner
patent: 2716555 (1953-06-01), Rowe
patent: 3506277 (1970-04-01), Harms
patent: 3552758 (1971-01-01), Siegler
patent: 3934891 (1976-01-01), Derbyshire
patent: 4067424 (1978-01-01), Johnson
patent: 4260169 (1981-04-01), Hall
patent: 4277074 (1981-07-01), Kilberis
patent: 4317578 (1982-03-01), Welch
patent: 4323324 (1982-04-01), Eberhardt

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