ハンドピースの内部汚染防止用駆動回路
- 专利权人:
- 株式会社吉田製作所
- 发明人:
- 遠藤 翠
- 申请号：
- JP2007112375
- 公开号：
- JP5358066B2
- 申请日:
- 2007.03.27
- 申请国别(地区):
- JP
- 年份:
- 2013
- 代理人:
- 摘要：
PROBLEM TO BE SOLVED: To provide a driving circuit for preventing internal contamination of a handpiece, preventing patients saliva and cutting pieces of a tooth from being sucked into the handpiece when stopping to use the handpiece.
SOLUTION: A proportional control valve 5 is provided on an air supply pipe 4 for supplying compressed air from a compressed air source 3 to an air turbine 2 an exhaust valve 7 is provided on an air discharge pipe 6 and when stopping to use the air turbine, and if the exhaust valve 7 is closed, the air supply flow of the proportional control valve 5 is simultaneously adjusted not to rotate the air turbine by electric control from a control circuit 8, whereby the interior of the handpiece is always kept at the positive pressure state.
COPYRIGHT: (C)2009,JPO&INPIT
- 来源网站：
- 中国工程科技知识中心
