Patent ID: 6343901
Filing Date: 2002-02-05
Classification: B23B,Y10S,Y10T

Abstract:
A releasable tool holder, comprising:a spindle having two ends, one end adapted to secure said spindle with a rotary device and the other end including a bore to receive a tool; a mechanism for retaining and releasing a tool from said spindle bore, said mechanism coupled with said spindle adjacent said bore end, said mechanism comprising at least two unlike retention members for applying a force on a tool in said bore for retaining a tool in said bore; a sleeve surrounding a portion of said spindle and said at least two retention members, said sleeve including a common surface in contact with said at least two retention members, wherein said surface applying a force on said at least two retention members such that one retention member prohibits axial movement of the tool using a point contact and the other retention member prohibits circumferential movement of the tool using a line contact to maintain the tool in the bore, said sleeve movable to enable the tool to be removed from the bore, and a biasing member for maintaining said sleeve in a retention position on said spindle.