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US 4,946,176 AGranted
Chuck with movable jaw halves
OwnerMark W. Hillenburginventor
Life of this patent
Estimating the term…
Abstract
A chuck comprises a scroll to simultaneously move a plurality of chuck jaw assemblies radially toward and away from a work piece. The chuck jaw assemblies include an inner chuck jaw part in engagement with the scroll and an outer chuck jaw part movable relative to the inner chuck jaw part radially toward and away from the axis. A ball detent mechanism returns to return the outer chuck jaw part to a predetermined or centered location after one work piece has been machined in preparation for work on the next work piece.
Claims17
A chuck comprising
- a chuck body having an axis;
- a plurality of chuck jaws movable radially on the body in a converging path for grasping a work piece therebetween including a first jaw part, a second jaw part, means mounting the second jaw part on the first jaw part for movement toward the axis relative to the first jaw part for engaging a work piece, and means including a threaded member interconnecting the first and second jaw parts for moving the second jaw part relative to the first jaw part;
- means carried by the body and engaging the first jaw part of each of the plurality of chuck jaws for simultaneously moving each of the chuck jaws toward and away from the axis;
- and
- means carried by the jaw parts to determine when each of the second jaw parts are at a predetermined location, the predetermined locations being concentric with the axis, including
- a spring biased detent carried by one of the jaw parts, the other jaw part providing a recess receiving the detent.
3 more elements
A chuck comprising
- a chuck body having an axis;
- a plurality of chuck jaws movable radially on the body in a converging path toward and away from the axis for respectively grasping and releasing a work piece therebetween including
- a first jaw part and a second jaw part mounted on the first jaw part for movement toward the axis relative to the first jaw part for engaging a work piece,
- the first jaw part comprising a rectangular body having
- a lower end providing a plurality of arcuate threaded sections and
- an upper end providing a first laterally extending wing extending beyond the lower jaw end and providing a recess,
- means interconnecting the first and second jaw parts for moving the second jaw part relative to the first jaw part, including a threaded member, one of the jaw parts having threads and threadably engaging the threaded member, the other of the jaw parts being free of threads and including means captivating the threaded member for nonthreadable rotation relative thereto;
- and
- means carried by the body and engaging the threaded sections of the lower end of the first jaw part of each of the plurality of chuck jaws for simultaneously moving each of the chuck jaws toward and away from the axis;
- and
- means carried by the jaw parts to determine when the second jaw parts are concentric with the axis, including
- a spring biased detent carried by the second jaw part and received in the recess provided by the wing.
9 more elements
Dependencies are inferred from the claim text.