发明授权
- 专利标题: Drill bit with fastener-driving collar assembly
- 专利标题(中): 钻头与紧固件驱动套环组合
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申请号: US18382申请日: 1979-03-07
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公开(公告)号: US4218795A公开(公告)日: 1980-08-26
- 发明人: Richard J. Ernst , Elbert E. Williams, Jr.
- 申请人: Richard J. Ernst , Elbert E. Williams, Jr.
- 申请人地址: IL Chicago
- 专利权人: Illinois Tool Works Inc.
- 当前专利权人: Illinois Tool Works Inc.
- 当前专利权人地址: IL Chicago
- 主分类号: B23B45/00
- IPC分类号: B23B45/00 ; B25B21/00 ; B25F3/00 ; B26B11/00
摘要:
A two piece hole-drilling and fastener-driving assembly consists of a three-sectioned drill bit and a three-sectioned drive collar. The drill bit has a fluted drilling section, a hexagonal driving section and a tapered section adapted to be received in a complementarily shape chuck of a rotary hammer. The drive collar has a first hexagonal portion which mates with the hexagonal drill bit section and is driven thereby. A second tubular portion receives the drilling section when the hexagonal portions are engaged. A third portion includes a fastener-engaging recess. This portion may take the form of a removable socket and the collar provided with a spring-biased ball retainer to hold the socket thereon and a second such retainer to hold the collar on the drill bit. The drill bit is inserted in the rotary hammer chuck and a hole is drilled in the workpiece. The drive collar is then slipped over the drill bit and a self-tapping fastener driven into the just-drilled hole.
公开/授权文献
- USD359993S Golf ball 公开/授权日:1995-07-04