Chucks or sockets – With fluid-pressure actuator – Socket type
Patent
1977-11-04
1979-07-24
Simpson, Othell M.
Chucks or sockets
With fluid-pressure actuator
Socket type
279 1W, 279 48, 279 52, 279 60, 401 92, 408240, B23B 3104, B23B 3112
Patent
active
041620801
ABSTRACT:
A drill chuck, specifically for use on a portable powered drill, for selectively and releasably engaging the shank of a drill bit. The chuck includes a support secured to the drive shaft of the drill, and an actuator which is axially movable relative to the support. A holder is disposed between the support and the actuator for grippingly engaging the drill bit. The holder includes an annular support ring movably positioned within the support and having a plurality of springlike arms which project radially inwardly and are disposed for gripping engagement with the drill bit. A first pair of diametrically opposed arms extend axially from one side of the support ring, and a further pair of arms project axially from the other side of the ring, the latter pair being angularly offset with respect to the first-mentioned pair. The support and actuator have camming shoulders which, when the actuator is axially displaced toward the support, engage the arms for camming same radially inwardly into gripping engagement with the drill bit.
REFERENCES:
patent: 2686681 (1954-08-01), Nyland
patent: 3716247 (1973-02-01), Sato
Bilinsky Z. R.
Simpson Othell M.
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