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公开(公告)号：US3813596A
公开(公告)日：1974-05-28
申请号：US34667073
申请日：1973-03-30
Applicant: RCA CORP
Inventor： HULLS L
Abstract: A magnetic reed sensor comprises a generally U-shaped permanent magnet having first and second end poles defining a gap of a given distance therebetween and establishing a magnetic flux path thereacross. A reed of flexible magnetic material is fixedly mounted at one end to a support with its other end forming a cantilever projection into the magnetic flux path wherein the flux path is normally symmetrically disposed about the reed. An external ferromagnetic material moved in proximity to said symmetric flux path, creates an unbalanced flux distribution which urges the reed toward one of the pole pieces. One embodiment includes a light source and a light pipe each mounted in opposite directions from the reed so that an optical path is completed between the light source and the light pipe in response to movement of the reed. The magnetic reed sensor then serves as a light shutter which is used in conjunction with an automotive engine to provide an optical indication of the relative timing of the engine.
Abstract translation: 磁簧传感器包括大致为U形的永磁体，其具有限定其间给定距离的间隙的第一和第二端极，并且在其间形成磁通路径。 柔性磁性材料的筘在一端固定地安装到支撑件上，其另一端在磁通路径中形成悬臂突起，其中磁通通常围绕筘对称设置。 移动到所述对称磁通路径附近的外部铁磁材料产生不平衡的磁通分布，该磁通分布将磁簧推向极片之一。 一个实施例包括光源和光管，每个光源和光管分别从簧片安装在相反的方向上，使得响应于簧片的移动在光源和光管之间完成光路。 然后，磁簧传感器用作与汽车发动机结合使用以提供发动机的相对定时的光学指示的光闸。
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公开(公告)号：US3757570A
公开(公告)日：1973-09-11
申请号：US3757570D
申请日：1971-10-06
Applicant: RCA CORP
CPC classification number: G01M15/044
Abstract: Apparatus and process for testing and analyzing the overall performance of an internal combustion engine by providing a simulated load to the engine. The simulated load is effected by periodically interrupting the engine ignition to reduce the total developed power of the engine to a value equal to the frictional horsepower at a desired speed. The period of the interruption cycle is controlled in response to the desired speed.
Abstract translation: 用于通过向发动机提供模拟负载来测试和分析内燃机的整体性能的装置和过程。 模拟负载通过周期性地中断发动机点火来实现，以将发动机的总开发功率以期望的速度降低到等于摩擦马力的值。 响应期望的速度来控制中断循环的周期。
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公开(公告)号：US3852664A
公开(公告)日：1974-12-03
申请号：US39887673
申请日：1973-09-19
Applicant: RCA CORP
Inventor： HULLS L
Abstract: A magnetic reed sensor comprises a generally U-shaped permanent magnet having first and second end poles defining a gap of a given distance therebetween and establishing a magnetic flux path thereacross. A reed of flexible magnetic material is fixedly mounted at one end to a support with its other end forming a cantilever projection into the magnetic flux path wherein the flux path is normally symmetrically disposed about the reed. An external ferromagnetic material moved in proximity to said symmetric flux path, creates an unbalanced flux distribution which urges the reed toward one of the pole pieces. One embodiment includes a light source and a light pipe each mounted in opposite directions from the reed so that an optical path is completed between the light source and the light pipe in response to movement of the reed. The magnetic reed sensor then serves as a light shutter which is used in conjunction with an automotive engine to provide an optical indication of the relative timing of the engine.
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