Patent ID: 6010135
Filing Date: 2000-01-04
Classification: B23B,Y10S,Y10T

Abstract:
A chuck for use with a manual or powered driver having a rotatable drive shaft, said chuck comprising:a generally cylindrical body member having a nose section and a tail section, said tail section being configured to mate with said drive shaft of said driver and said nose section having an axial bore formed therein;a plurality of jaws disposed within said body longitudinally with respect to said axial bore, each of said jaws having a jaw face formed one side thereof;a nut in operative communication with said jaws; anda self-contained anti-friction bearing assembly in communication with said body and havinga plurality of ball bearings,a first race integrally attached to said nut and defining an annular groove receiving said ball bearings, anda second race defining an annular groove receiving said ball bearings opposite said first race,wherein said annular groove of at least one of said first race and said second race defines an arcuate surface that receives said ball bearings and defines a lip at an outer portion of said groove that extends radially inward from said arcuate surface and restrains said ball bearings from movement in an axial direction toward the other of said first race and said second race.