公开(公告)号：US20020141841A1

公开(公告)日：2002-10-03

申请号：US09825046

申请日：2001-04-03

Applicant: Phillips Screw Company

Inventor： Michael L. Mowins

IPC: B23B051/00 ,  B25B023/08

CPC classification number: B25B15/008 ,  B23B31/005 ,  B23B2231/0232 ,  B23B2260/138 ,  B25B23/108 ,  Y10T279/17 ,  Y10T279/3406 ,  Y10T408/907

Abstract: A drill bit has a chuck engaging shank portion having a geometric cross-sectional shape; a plurality of projections formed on at least a part of at least one of said surfaces; said projections (a) varying in height across said surface, and (b) engaging an inner surface of a chuck to prevent slippage of said bit in said chuck.

Abstract translation: 钻头具有具有几何横截面形状的卡盘接合柄部分; 形成在至少一个所述表面的至少一部分上的多个突起; 所述突起（a）在所述表面上的高度变化，和（b）接合卡盘的内表面以防止所述卡盘中的所述钻头滑动。

公开(公告)号：US20040033838A1

公开(公告)日：2004-02-19

申请号：US10437096

申请日：2003-05-13

Applicant: Phillips Screw Company

Inventor： Barry J. Hughes ,  Michael L. Mowins

IPC: B21K001/56

CPC classification number: F16B23/0023 ,  B25B15/005 ,  Y10T83/04 ,  Y10T83/9423

Abstract: Recessed head fasteners are provided with a configuration by which the force applied by the blades of the driver to the recessed wings is applied at the radially outer regions of the wings. The wings of the fastener recess may be provided with torque pads at the outer regions of the wings adapted to engage the outer portions of the driver blades. The torque pads may be defined by relieved regions on the drive walls of the recess wings. The relieved regions are formed to avoid contact with the driver blades. Stabilizing ribs also may be defined at the radially inward regions of the drive walls. A recess engageable driver may include a plurality of radially extending ribs configured to promote engagement of the ribs with the most radially outward regions of the recess drive walls. The driver and the recess are compatible with each other as well as with otherwise corresponding conventional recesses and drivers that do not incorporate the invention. Also disclosed are punches and methods for making the disclosed fasteners.