公开(公告)号：US5793270A

公开(公告)日：1998-08-11

申请号：US806030

申请日：1996-09-03

申请人： Henry Richard Beck ,  Kenneth Martin Fischer ,  Richard Edwin White

发明人： Henry Richard Beck ,  Kenneth Martin Fischer ,  Richard Edwin White

IPC分类号： H01H77/10 ,  H01H71/12

CPC分类号： H01H77/104

摘要： The movable contact arms of a circuit breaker are latched in the blow open position to prevent rebound and possible restrike of the arc in response to the very high magnetic repulsion forces generated by a short circuit in the protected electrical system. Each movable contact arm is mounted on a secondary carrier coupled to a main carrier by a spring loaded cam mechanism which allows the movable contact arm to blow open before the main carrier is rotated to the open position by the spring driven circuit breaker operating mechanism. In one embodiment of the invention, the movable contact arm is latched in the blow open position by a latching detent in the cam surface of the cam mechanism. In a preferred embodiment, the secondary carrier is latched by a detent formed by a leaf spring cantilevered from a fixed support. Subsequent rotation of the main carrier by the operating mechanism releases the latch by rotating the secondary carrier clear of the detent formed by the leaf spring.

摘要翻译： 断路器的可动接触臂在打开位置被锁定，以防止由于受保护的电气系统中的短路而产生的非常高的磁力排斥力，反弹和可能的电弧再起弧。 每个可动接触臂通过弹簧加载的凸轮机构安装在与主载架相连的辅助载架上，弹簧加载的凸轮机构允许可动接触臂在主载架通过弹簧驱动断路器操作机构转动到打开位置之前打开。 在本发明的一个实施例中，可动接触臂通过凸轮机构的凸轮表面中的锁定定位器在打开位置锁定。 在一个优选实施例中，第二承载体由由固定支撑件悬臂的板簧形成的制动器锁定。 通过操作机构随后旋转主载架，通过使辅助托架旋转而脱离由弹簧形成的制动器的闩锁。

公开(公告)号：US5907461A

公开(公告)日：1999-05-25

申请号：US942180

申请日：1997-10-01

申请人： Ronald Dale Hartzel ,  Keith Lynn Mayhood ,  William David Munsch ,  John Joseph Kurtz ,  Richard Edwin White

发明人： Ronald Dale Hartzel ,  Keith Lynn Mayhood ,  William David Munsch ,  John Joseph Kurtz ,  Richard Edwin White

IPC分类号： H01H71/02 ,  H01H71/12 ,  H01H71/46 ,  H01H83/14 ,  H02H3/00

CPC分类号： H01H71/46 ,  H01H71/0228 ,  H01H83/144 ,  H01H2071/124 ,  H01H71/123

摘要： A molded case circuit breaker is provided with ground fault protection by a modular unit which drops into a pole compartment in the molded casing in place of a pole assembly. The modular unit includes a housing forming an open faced cavity across which is mounted a printed circuit board with the ground fault circuit components and trip solenoid projecting into the cavity. The housing also supports the ground fault sensing toroid in a position for the appropriate conductors to pass through the coil. A bell switch and auxiliary switch are positioned by the housing for actuation by levers mounted on the cradle pin and crossbar, respectively. An integral leaf spring molded into the housing accommodates for manufacturing tolerances and fixes the positions of the various components.

摘要翻译： 模制外壳断路器通过模块化单元提供接地故障保护，其落入模制外壳中的极室以代替极组件。 模块化单元包括形成开放式空腔的壳体，在该壳体上安装有印刷电路板，其中接地故障电路部件和跳闸螺线管突出到腔中。 外壳还支持接地故障检测环形在适当导体穿过线圈的位置。 喇叭开关和辅助开关由壳体定位，分别由安装在托架销和横杆上的杠杆驱动。 模制到壳体中的整体板簧可容纳制造公差并固定各种部件的位置。