Title:
工具用刃先
Document Type and Number:
Japanese Patent JP2004526584
Kind Code:
A
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.
Inventors:
Morwins, Michael, Elle
Application Number:
JP2002579158A
Publication Date:
September 02, 2004
Filing Date:
March 27, 2002
Export Citation:
Assignee:
Philips Screw Company
International Classes:
B25B13/54; B23B31/00; B23B51/00; B25B15/00; B25B23/10; (IPC1-7): B23B51/00; B25B13/54
Attorney, Agent or Firm:
Kazuo Shigenobu
Hideo Shimizu
Yuichi Takagi
Kazuki Hidaka
Tomoko Watanabe
Hideo Shimizu
Yuichi Takagi
Kazuki Hidaka
Tomoko Watanabe