Patent ID: 9010767
Filing Date: 2015-04-21
Classification: B23B,Y10T

Abstract:
1. A chuck comprising: a chuck body at least generally centered on a body axis and having an axially extending hole formed with forwardly open and frustoconically forwardly flaring inner surface portion; a clamping element having an axially generally central and radially projecting guide rib slidable in the hole, an external screwthread, and an outer surface portion generally complementary with and engaging the inner surface portion, whereby axial rearward movement of the clamping element in the hole radially compresses the clamping element; a ring axially nondisplaceable in the body, having an internal screwthread engaging the external screwthread of the clamping element, and having external gear teeth, whereby rotation of the ring axially shifts the clamping element in the body, the body being formed with a radially outwardly open cavity seat in which some of the teeth of the ring are exposed; a gear fitted in the seat, meshing with the teeth of the ring, and rotatable about a drive axis not parallel to the body axis to rotate the ring about the body axis; and a sleeve removably mounted on and separate from the chuck body, extending axially across and covering the seat to retain the gear therein, and formed with a throughgoing aperture through which a tool can fit to engage and rotate the gear.