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1. 发明授权

US4449094A Temperature compensated magnetic damping assembly for induction meters 失效
标题翻译：用于感应电表的温度补偿磁阻尼组件
公开(公告)号：US4449094A
公开(公告)日：1984-05-15
申请号：US272244
申请日：1981-06-10
申请人： John A. MacFadden , Joseph M. Keever , William J. Zisa
发明人： John A. MacFadden , Joseph M. Keever , William J. Zisa
IPC分类号： G01R11/10 , G01R11/185 , G01R1/14
CPC分类号： G01R11/185 , G01R11/10
摘要： A temperature compensated magnetic damping assembly for providing a braking torque on an electroconductive disk of an induction device includes a pair of permanent magnets each having an easy axis of magnetization. Each permanent magnet provides two easy flux paths parallel to the easy axis of magnetization and separated by a dead zone. The permanent magnets are juxtaposed about a predetermined space through which the disk rotates such that the easy flux paths are perpendicular to the disk, and are aligned such that the magnetic flux passes twice through the disk in opposite directions. Flux return plates are provided adjacent to each of the permanent magnets so as to provide a flux path parallel to the disk and linking the two easy flux paths of each of the permanent magnets. In this configuration, a highly-efficient, substantially square magnetic flux loop is provided. One of the flux return plates is movable relative to the adjacent permanent magnet so as to provide series adjustment of the damping torque. Finally, a temperature sensitive magnetic shunting member extends from the north to the south pole, across the dead zone, of each of the permanent magnets so as to provide temperature compensation.
摘要翻译：用于在感应装置的导电盘上提供制动转矩的温度补偿磁阻尼组件包括一对具有易磁化轴的永磁体。每个永磁体提供两个容易的磁通路径，平行于容易的磁化轴并且被死区分开。永久磁铁围绕盘旋转的预定空间并置，使得容易的磁通路径垂直于磁盘，并且对准，使得磁通量在相反方向上通过磁盘两次。与每个永磁体相邻设置磁通返回板，以提供平行于磁盘的磁通路径，并且连接每个永磁体的两个易磁通路径。在这种结构中，提供了一种高效的，基本上为方形的磁通回路。一个回流板相对于相邻的永磁体是可移动的，以便提供阻尼扭矩的串联调整。最后，一个温度敏感的磁分流元件从每个永久磁铁的北极向南极延伸穿过死区，以提供温度补偿。

2. 发明授权

US4424485A Fixed light load adjustment assembly for induction meters 失效
标题翻译：用于感应电表的固定轻载调整组件
公开(公告)号：US4424485A
公开(公告)日：1984-01-03
申请号：US272243
申请日：1981-06-10
申请人： William J. Zisa
发明人： William J. Zisa
IPC分类号： G01R11/02 , G01R11/23
CPC分类号： G01R11/02 , G01R11/23
摘要： An induction meter having a voltage magnetic section comprised of a substantially E-shaped laminated magnetic core having a center leg terminating at a main pole face and two adjacent legs terminating at coplanar auxiliary pole faces on opposite sides of the main pole face provides a fixed light load adjuster bracket located in magnetic proximity to the first side of the core. The bracket has a fixed tab extending over a portion of one of the auxiliary pole faces. A nonmagnetic spacer is located between the first side of the core and the light load adjuster bracket. The spacer, the light load adjuster bracket and the laminae of the core are fastened together so as to provide a rigid assembly. The light load adjuster bracket carries a movable tab extending over adjustable portions of the other auxiliary pole face and the main pole face thereby providing an adjustable magnetic flux shunt path. The light load adjuster bracket together with both the fixed tab and the movable tab act as an additional magnetic flux shunt path.
摘要翻译：一种具有电压磁场的感应计，其具有大致E形的叠层磁芯，其中心支脚终止于主极面，并且两个相邻的支脚终止于主极面的相对侧上的共面辅助极面，从而提供固定的光负载调节器支架位于靠近磁芯第一侧的磁性附近。支架具有在辅助极面中的一个的一部分上延伸的固定突片。非磁性间隔件位于芯体的第一侧和轻负载调节器支架之间。间隔件，轻负载调节器支架和芯的薄片被紧固在一起以提供刚性组件。轻负载调节器支架承载着在另一辅助极面和主极面的可调节部分上延伸的可移动突片，从而提供可调磁通分流路径。轻负载调节器支架与固定翼片和可移动翼片一起用作额外的磁通分流路径。

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