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    AUTOMATIC TOOL-BIT HOLDER
    2.
    发明公开
    AUTOMATIC TOOL-BIT HOLDER 有权
    自动使用HOLDER

    公开(公告)号：EP2013440A2

    公开(公告)日：2009-01-14

    申请号：EP07755520.9

    申请日：2007-04-13

    申请人： INSTY-BIT, Inc.

    发明人： WIENHOLD, James, L.

    IPC分类号： E21B10/22

    CPC分类号： B25B23/0035 ,  Y10T29/49826 ,  Y10T279/17752 ,  Y10T279/17786 ,  Y10T279/17811 ,  Y10T279/3481

    摘要： A tool-bit holder (1) has a hub (4), wherein the hub has a longitudinally extending axial bore (2) for receiving a tool-bit (30) therein, a detent ball (16) radially projecting into the bore to selectively engage a groove (G) in the tool-bit, and a circumferential ramp (14) on a sleeve (10) that is longitudinally moveable over the detent ball to cause radial movement thereof. A longitudinally moveable member (18) extends through a slot (17) in the hub and radially into the bore. The circumferential ramp is moveable as a function of longitudinal movement of the moveable member relative to the hub. An inner ring (20) is biased by an inner ring spring (26), while a sleeve spring (24) extends in compression between the inner ring and a cap on the sleeve.