Patent ID: 9156093
Filing Date: 2015-10-13
Classification: B23B,Y10T

Abstract:
1. An accessory tool retention assembly for a rotary tool comprising: a collet chuck configured to be removably secured to an output shaft of a motor of a rotary tool, the collet chuck including a main body defining a collet receiving passage and a leading portion defining an opening that leads into the collet receiving passage; a collet including a cylindrical body defining a collet axis and configured to fit longitudinally within the collet receiving passage of the collet chuck, the collet having a leading end portion, a trailing end portion, and at least one slot that extends along a portion of a length of the body through the leading end portion, the at least one slot dividing the collet into a plurality of flexible segments, each of the plurality of flexible segments including an intermediate portion that is arranged parallel to the collet axis when the collet is in a relaxed state and an outwardly projecting end portion that projects radially outwardly from the collet; and a nose cap configured to be attached to the leading portion of the collet chuck, the nose cap including a front wall portion defining an insertion opening aligned with the opening and the passage of the collet chuck, the front wall portion defining a plurality of recesses sized and shaped complementary to the outwardly projecting end portions of the collet, the plurality of recesses being positioned to receive the outwardly projecting end portions of the collet when the collet is inserted into the collet receiving passage, wherein the nose cap is configured to releasably retain the collet in the collet receiving passage when the nose cap is attached to the collet chuck, and wherein the collet is configured to be inserted into and removed from the collet receiving passage via the insertion opening of the nose cap when the nose cap is attached to the collet chuck.