发明授权
- 专利标题： Liquid-immersible electrostatic ultrasonic transducer
- 专利标题（中）： 液体静电超声波换能器
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申请号： US106136申请日： 1979-12-21
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公开(公告)号： US4310906A公开(公告)日： 1982-01-12
- 发明人: John H. Cantrell, Jr. , Joseph S. Heyman , William T. Yost , Michael A. Torbett , Mack A. Breazeale
- 申请人： John H. Cantrell, Jr. , Joseph S. Heyman , William T. Yost , Michael A. Torbett , Mack A. Breazeale
- 申请人地址： DC Washington
- 专利权人： The United States of America as represented by the Administrator, National Aeronautics and Space Administration
- 当前专利权人： The United States of America as represented by the Administrator, National Aeronautics and Space Administration
- 当前专利权人地址： DC Washington
- 主分类号： G01S1/72
- IPC分类号： G01S1/72 ; H04R19/00
摘要：
A broadband megahertz range electrostatic acoustic transducer for use in a liquid environment. A liquid-tight enclosure 11 which includes a metallic conducting membrane 18 as part of its outside surface has a means 19 inside the liquid-tight enclosure for applying a tension to the membrane and for mounting an electrode 23 such that the flat end of the electrode is approximately parallel to the membrane. The invention includes structure and a method for ensuring that the membrane 18 and the flat end of the electrode 23 are exactly parallel and a fixed predetermined distance from each other.
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