Down hole drill chuck lock

Details Down hole drill chuck lock Down hole drill chuck lock

1987-12-14

1989-06-06

Massie, Jerome W.

Boring or penetrating the earth

With tool shaft detail

Axially telescoping shaft section

175415, 279 1DA, 279 99, 285 92, E21B 1062

Patent

active

048363065

ABSTRACT:
Disclosed is a means for retaining drill chucks for down hole drills including a circumferential groove cut in both the drill chuck and the wear sleeve, into which it is inserted, in complimentary mating orientation whereby the circumferential groove forms a channel which is filled with ball bearings, for example through access ports provided in the wear sleeve. The ball bearings prevent uncoupling and may be removed readily thereafter permitting removal of the chuck.

REFERENCES:
patent: 1669186 (1928-05-01), Bunker
patent: 1922559 (1933-08-01), Strobel
patent: 2680358 (1954-06-01), Zublin
patent: 3163244 (1964-12-01), Zimmerman
patent: 3385613 (1968-05-01), McCall
patent: 4067404 (1978-01-01), Crase
patent: 4083415 (1978-04-01), Kita et al.
patent: 4096917 (1978-06-01), Harris
patent: 4426105 (1984-01-01), Plaquin et al.
patent: 4706764 (1987-11-01), Hughes

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