Chucks or sockets – Socket type – Obliquely guided reciprocating jaws
Patent
1990-07-24
1991-10-08
Howell, Daniel W.
Chucks or sockets
Socket type
Obliquely guided reciprocating jaws
279 63, B23B 3110
Patent
active
050547968
ABSTRACT:
A hammer-drill chuck has a chuck body, a sleeve rotatable but axially nondisplaceable on the chuck body, and a plurality of jaws engaged between the sleeve and chuck body. A locking-ring body is axially displaceable between a rear unlocked position and a front locking position on the chuck body. A pin is radially displaceable in and extends radially from one of the bodies toward the other body and this other body is formed with an angularly extending slot having angularly opposed and spaced end surfaces and with a plurality of angularly spaced abutments. Thus when the pin is engaged in the slot it limits relative angular displacement of the bodies. The other body also has an axially backwardly extending cutout opening axially forward into the slot adjacent one of the end surfaces thereof at a mouth having an angular dimension generally equal to the pin width. Thus the cutout only allows axial travel of the locking ring into its locked position when the pin is aligned axially with the cutout at the one end surface of the slot. A spring urges the pin radially toward the floor of the slot and the pin has an end interfittable with the abutments. The pin end and abutment are so shaped that the pin can move angularly in one direction along the slot but cannot move angularly in the opposite direction.
REFERENCES:
patent: 3702705 (1972-11-01), Schadlich
patent: 4955623 (1990-09-01), Kohm
Dubno Herbert
Howell Daniel W.
Wilford Andrew
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