US 6,398,466 B1 · Power drivable chuck

Abstract

A chuck 30 is formed with a generally cylindrical body 54 formed with a bore 60 at a forward end 58 thereof. A fixed clamp segment 134 and a movable clamp segment 166 are located in radial opposition in the bore 60. A pair of ribs 142 are formed on the fixed segment 134 and extend radially inward. A single rib 172 is formed on the movable segment 166 and extends radially inward. The ribs 142 and 172 cooperate to clamp a shank 42 therebetween in a clamping mode. A sleeve 78 is positioned about the body and is movable axially relative thereto. A camming section 88 formed on an interior wall of the sleeve 78 is captured between a head 124 of a pin 122 and a detent ring 132 to latch the sleeve in an unclamped mode. When the shank 42 is inserted into the bore 60, the forward end of the shank engages the pin 122 to move the head 124 against the camming section 88 which, in turn, moves the section past the detent ring. In this manner, the sleeve 78 is unlatched and moved forward to compress a plurality of rollers 196 against the fixed segment 134 and the movable segment 166 to place the sleeve in a clamped mode, whereby the shank 42 is clamped.

Claims33

Dependent claims

A power drivable chuck for receiving and clamping a shank, which comprises:

a body having a bore therein formed about an axis thereof;
a first clamping segment located within a first portion, and spaced from the axis, of the bore and mounted to preclude movement of the segment toward the axis;
a second clamping segment located opposite the first clamping segment within a second portion, and spaced from the axis, of the bore and mounted to facilitate movement of the segment toward the axis;
a first-segment shank-engaging rib extending from the first clamping segment toward the axis;
a second-segment shank-engaging rib extending from the second clamping segment;
and
means for urging the second clamping segment toward the first clamping segment to clamp the shank therebetween.

4 more elements

A power drivable chuck for receiving and clamping a shank, which comprises:

a body having a bore therein formed about an axis thereof;
a first clamping segment located within a first portion, and space from the axis, of the bore;
a second clamping segment located opposite the first clamping segment within a second portion, and space from the axis, of the bore;
means for moving at least one of the first and second segments toward the axis of the bore to clamp any shank therebetween;
a sleeve positioned about the body and movable in an axial direction relative to the body between a retracted position, in which the sleeve is in an unclamped mode, and a forward position, in which the sleeve is in a clamped mode;
means for latching the sleeve wherein the sleeve is latched in the unclamped mode, which includes:
a radially-inwardly extended section formed in an opening of the sleeve;
a head located on an outer periphery of the body along an intermediate section of the body;
a detent mounted on the periphery of the body spaced axially from the head in a direction toward a front end of the body;
and
the extended section of the sleeve being located between the head and the detent when the sleeve is in the unclamped mode to preclude and movement of the sleeve toward the position of the clamped mode thereof;
and
means, responsive to the insertion of the shank into the bore of the body, for unlatching the sleeve to allow the sleeve to move toward the forward position.

10 more elements

Dependencies are inferred from the claim text.

Power drivable chuck

Life of this patent

Power drivable chuck

Life of this patent

Abstract

Claims33