发明授权
- 专利标题： Drill bit
- 专利标题（中）： 钻头
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申请号： US14462935申请日： 2014-08-19
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公开(公告)号： US09333564B2公开(公告)日： 2016-05-10
- 发明人: Aland Santamarina , Glen V. Steinbrunner , David N. Johnson
- 申请人： BLACK & DECKER INC.
- 申请人地址： US CT New Britain
- 专利权人： BLACK & DECKER INC.
- 当前专利权人： BLACK & DECKER INC.
- 当前专利权人地址： US CT New Britain
- 代理商 Scott B. Markow
- 主分类号： B23B51/02
- IPC分类号： B23B51/02 ; B23P15/32
摘要：
An elongated drill bit has a shank at one end and working end at the other. A flute portion is between the working end and the shank. The flute portion is continuous with the shank and working end and is generally unitarily formed with them. The flute portion has at least one flute with a helix angle between approximately 30° and 35°. The working end has a pilot tip with a cutting portion. A tapered web is formed in the flute portion, a thickness of the web at the tip of the working end is about 9% to 15% of the nominal diameter.
公开/授权文献
- US20140356088A1 DRILL BIT 公开/授权日：2014-12-04
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