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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0558075 (1975-03-13) |
우선권정보 | DT-2331023 (1973-06-18) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 76 인용 특허 : 0 |
Cooling means for bone or tooth cutting tool. In order to cool the cutting surfaces of a bone or tooth cutting tool, there is provided in the supporting shank of the cutting tool a first chamber containing the driving means for the tool and a second chamber within or communicating with the cutting t
In a hand held apparatus including a handle having driving shaft means rotatably supported thereon and tool means rotatably driven by said driving shaft means, said driving shaft means including means thereon defining a passageway extending coaxially therethrough, the improvement comprising tube mea
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