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1. 发明授权

US06239535B1 Omni-directional ultrasonic transducer apparatus having controlled frequency response 有权
标题翻译：具有受控频率响应的全向超声波换能器装置
公开(公告)号：US06239535B1
公开(公告)日：2001-05-29
申请号：US09281398
申请日：1999-03-30
申请人： Minoru Toda , Kyung-Tae Park , Susan Huang Zaks , Jeffrey D. Swan
发明人： Minoru Toda , Kyung-Tae Park , Susan Huang Zaks , Jeffrey D. Swan
IPC分类号： H01L4108
CPC分类号： B06B1/0655 , B06B1/0688 , Y10S310/80
摘要： A transducer apparatus is disclosed including a spool member having a body portion and first and second elevated regions formed on the body portion. A piezoelectric film such as a PVDF film surrounds the spool member and is spaced apart from the body portion of the spool member by an elevation of the elevated region, thereby forming a predetermined gap between the piezoelectric film and the body portion of the spool member. The predetermined gap is at least 0.1 mm and enables a predetermined resonance frequency in the piezoelectric film to control the resonance frequency of the transducer. Opposite lateral ends of the piezoelectric film are secured together such that secured ends of the piezoelectric film have substantially the same resonance frequency as a remainder of the piezoelectric film.
摘要翻译：公开了一种换能器装置，其包括具有主体部分的卷轴构件和形成在主体部分上的第一和第二升高区域。诸如PVDF膜的压电膜围绕卷轴构件并且通过升高区域的高度与卷筒构件的主体部分间隔开，从而在压电膜和卷筒构件的主体部分之间形成预定的间隙。预定的间隙至少为0.1mm，并且能够使压电膜中的预定谐振频率控制换能器的共振频率。压电膜的相对的两个端部固定在一起，使得压电膜的固定端部具有与压电膜的其余部分基本相同的共振频率。

2. 发明授权

US06400065B1 Omni-directional ultrasonic transducer apparatus and staking method 失效
标题翻译：全方向超声波换能器和放样方法
公开(公告)号：US06400065B1
公开(公告)日：2002-06-04
申请号：US09281247
申请日：1999-03-30
申请人： Minoru Toda , Kyung-Tae Park , Susan Huang Zaks , Jeffrey D. Swan
发明人： Minoru Toda , Kyung-Tae Park , Susan Huang Zaks , Jeffrey D. Swan
IPC分类号： H01L4108
CPC分类号： B06B1/0688 , B06B1/0655 , Y10S310/80
摘要： A transducer apparatus is disclosed having a spool member with a body portion and first and second elevated regions formed on the body portion. A PVDF film surrounds the spool member, the film including an inner surface facing the spool member and an outer surface opposite the inner surface. The film as surrounding the spool member has a predetermined frequency of resonance. Lateral ends of the film are secured together by a securing material. The securing material is such that the secured ends of the film will have substantially the same resonance frequency as a remainder of the film. The film includes a non-electrode area at a perimeter of the inner surface and an electrode material formed on a remainder of the inner surface. Upon securing the lateral edges of the film together, the securement is at overlapping non-electrode lateral edges of the film. The securing material may be any one of an adhesive in combination with screws or thermally deformable nails, adhesive alone, tape, or ultrasonic welding.
摘要翻译：公开了一种换能器装置，其具有带主体部分的卷轴部件和形成在主体部分上的第一和第二升高部分。 PVDF膜围绕卷轴构件，膜包括面向卷轴构件的内表面和与内表面相对的外表面。围绕卷轴构件的薄膜具有预定的共振频率。膜的侧端通过固定材料固定在一起。固定材料使得薄膜的固定端部将具有与薄膜的其余部分基本相同的共振频率。该膜包括在内表面的周边处的非电极区域和形成在内表面的其余部分上的电极材料。在将膜的侧边缘固定在一起时，固定件位于膜的重叠非电极侧边缘处。固定材料可以是与螺钉或热变形钉，粘合剂单独，胶带或超声波焊接组合的粘合剂中的任何一种。

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