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1. 发明授权

US5703296A Pressure sensor having reduced hysteresis and enhanced electrical performance at low pressures 失效
标题翻译：压力传感器在低压下具有减小的滞后和增强的电气性能
公开(公告)号：US5703296A
公开(公告)日：1997-12-30
申请号：US590710
申请日：1995-06-27
申请人： Lewis Henry Little , Russell Bolin Hopkins , John Michael Matly
发明人： Lewis Henry Little , Russell Bolin Hopkins , John Michael Matly
IPC分类号： G01L9/12 , G01L9/00 , G01L19/04 , G01L7/00
CPC分类号： G01L19/147 , G01L19/0038 , G01L19/0084 , G01L19/143
摘要： A pressure sensor suitable for sensing low pressure environments. The pressure sensor includes a piezoresistive sensing element enclosed within a protective housing, and utilizes an insert molded into the housing for supporting the sensing element and concentrating stresses within the housing at a maximum distance from the sensing element. The insert is adapted to work in cooperation with a constraint to isolate the sensing element from stresses within the housing, so as to improve the electrical performance of the sensing element to low pressure environments, such as an evaporative emission system of an automobile.
摘要翻译：适用于感应低压环境的压力传感器。压力传感器包括封装在保护壳体内的压阻感测元件，并且利用插入到壳体中的插入件来支撑感测元件并且与壳体内的集中应力距离感测元件最远的距离。插入件适于与约束条件协同工作，以将感测元件与壳体内的应力隔离，以便将感测元件的电气性能改善为诸如汽车的蒸发排放系统的低压环境。

2. 发明授权

US06679100B2 Spark plug mounted thick film strain gauge 失效
公开(公告)号：US06679100B2
公开(公告)日：2004-01-20
申请号：US10264068
申请日：2002-10-03
申请人： Ronald J. Kiess , Lewis Henry Little , Marion E. Ellis , Raymond O. Butler, Jr.
发明人： Ronald J. Kiess , Lewis Henry Little , Marion E. Ellis , Raymond O. Butler, Jr.
IPC分类号： G01L2322
CPC分类号： G01L23/18 , G01L23/22
摘要： A thick film resistor strain gauge is applied to a stainless steel shell portion of a spark plug. There are two preferable ways of applying a thick film resistor to the metal shell. In a first embodiment, the thick film resistor may be directly printed on to the shell portion with special screen printing equipment. In a second embodiment, the thick film resistor is printed and applied as a decal to the shell portion. The thick film resistors may be included in a quarter, a half, or a full wheatstone bridge strain gauge circuit. One of two embodiments of an automatic drift compensating circuit is used to determine the change in resistance experienced by the thick film resistors affixed to the spark plug. Either one of the automatic drift compensation circuits output a voltage signal which is proportional to the pressure changes occurring inside the engine cylinder into which the spark plug is threaded.

3. 发明申请

US20130036826A1 MULTIPLE HYDRAULIC CIRCUIT PRESSURE SENSOR 审中-公开
标题翻译：多液压电路压力传感器
公开(公告)号：US20130036826A1
公开(公告)日：2013-02-14
申请号：US13695170
申请日：2011-06-03
申请人： Daniel R. Dahlgren , Daniel A. Lawlyes , Markus Naegeli , John K. Isenberg , Lewis Henry Little
发明人： Daniel R. Dahlgren , Daniel A. Lawlyes , Markus Naegeli , John K. Isenberg , Lewis Henry Little
IPC分类号： G01L9/04 , G01L9/02
CPC分类号： G01L15/00 , G01L9/0055
摘要： A hydraulic solenoid assembly for complex vehicle-borne control systems, such as automatic transmissions, includes a solenoid body or unitary housing operatively enclosing two or more solenoid valves. Each valve has a pressure port extending to an outer surface of the housing, emerging in a spaced-apart matrix. A metal (stainless steel or aluminum) sensor plate is mounted to the outer surface of the housing so as to sealingly overlay the pressure ports. A diaphragm is formed in the sensor plate for each solenoid valve and registers with its associated pressure port. Electrical components, such as thick file resistors arranged in a Wheatstone bridge network are printed or mounted to an outer surface of each diaphragm. The bridge networks are electrically connected to a control circuit and function to output signals as a function of hydraulic pressure induced displacement of the associated diaphragm.
摘要翻译：用于复杂车载控制系统（例如自动变速器）的液压螺线管组件包括可操作地封闭两个或更多个电磁阀的螺线管主体或整体式外壳。每个阀具有延伸到外壳的外表面的压力端口，以间隔开的矩阵形式出现。金属（不锈钢或铝）传感器板安装在壳体的外表面，以密封地覆盖压力端口。在每个电磁阀的传感器板上形成隔膜，并与其相关的压力端口配准。布置在惠斯登电桥网络中的诸如厚文件电阻器的电气部件被印刷或安装到每个隔膜的外表面上。桥接网络电连接到控制电路，并且用于输出作为相关隔膜的液压压力感应位移的函数的信号。

4. 发明授权

US06834538B2 Spark plug mounted thick film strain gauge 失效
标题翻译：火花塞安装厚膜应变片
公开(公告)号：US06834538B2
公开(公告)日：2004-12-28
申请号：US10682664
申请日：2003-10-09
申请人： Ronald J. Kiess , Lewis Henry Little , Marion E. Ellis , Raymond O. Butler, Jr.
发明人： Ronald J. Kiess , Lewis Henry Little , Marion E. Ellis , Raymond O. Butler, Jr.
IPC分类号： G01M1500
CPC分类号： G01L23/18 , G01L23/22
摘要： A thick film resistor strain gauge is applied to a stainless steel shell portion of a spark plug. There are two preferable ways of applying a thick film resistor to the metal shell. In a first embodiment, the thick film resistor may be directly printed on to the shell portion with special screen printing equipment. In a second embodiment, the thick film resistor is printed and applied as a decal to the shell portion. The thick film resistors may be included in a quarter, a half, or a full wheatstone bridge strain gauge circuit. One of two embodiments of an automatic drift compensating circuit is used to determine the change in resistance experienced by the thick film resistors affixed to the spark plug. Either one of the automatic drift compensation circuits output a voltage signal which is proportional to the pressure changes occurring inside the engine cylinder into which the spark plug is threaded.
摘要翻译：将厚膜电阻应变仪施加到火花塞的不锈钢外壳部分。将厚膜电阻器应用于金属外壳的优选方式有两种。在第一实施例中，厚膜电阻器可以用特殊的丝网印刷设备直接印刷在外壳部分上。在第二实施例中，厚膜电阻器作为贴花印刷并施加到壳部分。厚膜电阻器可以包括在四分之一，一半或全麦克斯通电桥应变仪电路中。自动漂移补偿电路的两个实施例之一用于确定固定在火花塞上的厚膜电阻所经历的电阻变化。自动漂移补偿电路中的任一个输出与发动机气缸内发生的压力变化成比例的电压信号，发动机气缸内插有火花塞。

5. 发明授权

US6022756A Metal diaphragm sensor with polysilicon sensing elements and methods therefor 失效
标题翻译：具有多晶硅感应元件的金属膜片传感器及其方法
公开(公告)号：US6022756A
公开(公告)日：2000-02-08
申请号：US127291
申请日：1998-07-31
申请人： Douglas Ray Sparks , Andres Deogracias Viduya , Lewis Henry Little , Marion Edmond Ellis
发明人： Douglas Ray Sparks , Andres Deogracias Viduya , Lewis Henry Little , Marion Edmond Ellis
IPC分类号： G01L9/00 , H01L21/00
CPC分类号： G01L9/0055
摘要： A sensor (10) having polysilicon strain-sensing elements (20) on a metal diaphragm (16). A thick-film insulating layer (18) covers the metal diaphragm (16), and thin-film polysilicon resistive elements (20) are formed on the thick-film insulating layer (18). Thick-film conductors (22) are formed on the thick-film insulating layer (18) and contact the thin-film polysilicon resistive elements (20) to form electrical interconnects to the resistive elements (20). The thick-film conductors (22) preferably contain silicon in order to reduce diffusion of silicon from the polysilicon resistive elements (20). The thick-film insulating layer (18) may be made up of a number of individual thick-film layers, the uppermost of which is stable and nonreactive with the thin-film polysilicon resistive elements (20) and the thick-film conductors (22) at temperatures of at least 600.degree. C. A passivation layer (24) overlies the thin-film polysilicon resistive elements (20) and the thick-film conductors (22). The sensor (10) can be made sufficiently rugged to be used as a structural member of a fluid-containing vessel.
摘要翻译：一种在金属隔膜（16）上具有多晶硅应变传感元件（20）的传感器（10）。厚膜绝缘层（18）覆盖金属膜（16），在厚膜绝缘层（18）上形成薄膜多晶硅电阻元件（20）。在厚膜绝缘层（18）上形成厚膜导体（22），并与薄膜多晶硅电阻元件（20）接触以形成与电阻元件（20）的电互连。厚膜导体（22）优选地含有硅以便减少硅从多晶硅电阻元件（20）的扩散。厚膜绝缘层（18）可以由多个单独的厚膜层组成，其最上面的薄膜层与薄膜多晶硅电阻元件（20）和厚膜导体（22）是稳定的和非反应的）在至少600℃的温度下。钝化层（24）覆盖薄膜多晶硅电阻元件（20）和厚膜导体（22）。传感器（10）可以制成足够坚固的以用作含流体容器的结构构件。

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