Patent ID: 7178216
Filing Date: 2007-02-20
Classification: B23B,Y10S,Y10T

Abstract:
1. A keyless chuck, comprising: a generally cylindrical body defining an axis and having a forward portion and a rearward portion with respect to the axis, the forward portion including a radially outwardly projecting portion of the body, the body further including a plurality of guides extending obliquely to the axis and converging toward the forward section, and a groove extending around the body; a plurality of jaws corresponding to the plurality of guides, each jaw being slidably disposed within the respective guide and including a thread section along an outer surface thereof; a jaw-engaging mechanism configured to operably engage the groove and to be rotatable around the body, the jaw-engaging mechanism including a thread section configured to complementarily engage the thread sections of the jaws; a sleeve extending over the jaw-engaging mechanism, wherein the sleeve comprises an inner sleeve press-fit into an outer sleeve, and wherein the inner sleeve defines at least one circumferentially-extending slot; and a retaining member disposed substantially within the sleeve, the retaining member being operably engaged with and extending directly between the body and the sleeve, rearwardly of the radially outwardly projecting portion of the body, the retaining member comprising a stop ring having a radially-extending portion, the stop ring being insertable into the sleeve so as to allow the radially-extending portion to engage the at least one circumferentially-extending slot, the stop ring further being configured to extend radially inward of the radially outwardly projecting portion of the body, the retaining member thereby being configured to directly axially constrain the sleeve with respect to movement toward the forward portion of the body.