Chucks or sockets – Socket type – Obliquely guided reciprocating jaws
Patent
1979-08-31
1981-06-30
Bilinsky, Z. R.
Chucks or sockets
Socket type
Obliquely guided reciprocating jaws
128 92EB, 279 59, 279 75, B23B 3119
Patent
active
042758939
ABSTRACT:
A bi-directional, self-tightening drill chuck suited for surgical and other medical applications in accordance with the present invention includes a chuck body having an internally tapered opening at one end that is defined by first and second cam surfaces and a central, longitudinally extending cannula or passage formed through the length of the chuck body. A plurality of tapered gripping rollers are located within the opening and are resiliently urged against the cam surfaces throughout a range of adjustment by a spring retainer which includes rearwardly extending spring arms. A control sleeve is adjustably mounted on the chuck body and includes a thrust bearing at one end for contacting the forwardly facing ends of the tapered rollers and a split retainer assembly at its other end for contacting the rearwardly extending ends of the spring arms such that the tapered rollers and the spring retainer move as a unit relative to the chuck body when the control sleeve is adjusted to cause the tapered rollers to grip a selected tool bit. The chuck can accept a tool bit, such as a common twist drill, or other implements at one end through a tool receiving opening formed in the control sleeve or from the opposite end through the cannula. In operation, the torque transmitted through the chuck causes the tapered rollers to shift circumferentially relative to the cam surfaces and proportionally increase the gripping force applied to the tool bit.
REFERENCES:
patent: 1679299 (1928-07-01), Fegley et al.
Bilinsky Z. R.
Black & Decker Inc.
Bloom Leonard
Murphy Edward D.
Weinstein Harold
LandOfFree
Self-tightening keyless chuck does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Self-tightening keyless chuck, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-tightening keyless chuck will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2433912