Chucks or sockets – With fluid-pressure actuator – Socket type
Patent
1984-09-26
1986-11-11
Weidenfeld, Gil
Chucks or sockets
With fluid-pressure actuator
Socket type
74578, 279 1ME, 279 19, 279 60, 279 62, B23B 3112, G05G 518
Patent
active
046218190
ABSTRACT:
A hammer drill having a drive spindle rotatable about a spindle axis and a hammer displaceable axially in the drive spindle has a chuck in turn having a generally tubular chuck body centered on a chuck axis, formed with an axially centered array of axially backwardly open recesses, and having a central axially extending passage adapted to receive the shank of a drill bit. The body normally is carried on the spindle and receives the shank of the drill bit in its passage with the spindle, shaft, and chuck axes all coaxial. The hammer projects axially forward into the passage and is engageable therein with the bit. A plurality of jaws radially but not angularly displaceable in the chuck body have inner ends engageable with the drill-bit shank. An adjustment ring centered on the chuck axis, rotatable thereabout on the chuck body, and coupled to the jaws can move same radially synchronously and thereby center the bit in the body by engagement of the inner ends with the shank. At least one latch or detent is rotationally fixed but axially displaceable on the body between a locking position engaging in the array of recesses for locking the ring and body against relative rotation and a freeing position out of blocking engagement with the recesses and permitting such rotation.
REFERENCES:
patent: 1075311 (1913-07-01), Beck
patent: 2276913 (1942-03-01), Ashworth
patent: 3765691 (1973-10-01), Saruhashi
patent: 4213622 (1980-07-01), Rohm
Bishop Steven C.
Dubno Herbert
Ross Karl F.
Weidenfeld Gil
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