Boring or penetrating the earth – With tool shaft detail
Patent
1989-08-21
1990-09-04
Kisliuk, Bruce M.
Boring or penetrating the earth
With tool shaft detail
175327, 279 24, 279 77, 279 79, 279 93, 285 39, 285308, 403 20, 403321, 403377, 408 1BD, E21B 17046, E21B 1706, F16D 110, F16L 3700
Patent
active
049536400
ABSTRACT:
A quick detach bit apparatus includes a wear sleeve having a chuck threaded thereinto. A bit is mounted within the chuck. The bit and chuck are interconnected by mating, axially extending splines and grooves. The chuck includes a resiliently mounted segment urged into engagement with the bit. A quick release tool is accommodated in a passage between the bit and chuck. The tool is inserted into the passage and has a thickness sufficient to urge the segment out of engagement with the bit so that the bit is removed from the chuck.
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Bell J. R.
Kisliuk Bruce M.
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