公开(公告)号：US3596219A

公开(公告)日：1971-07-27

申请号：US3596219D

申请日：1969-11-25

Applicant: SQUARE D CO

Inventor： ERICKSON KENNETH W

IPC: H01H71/04

CPC classification number: H01H71/04

Abstract: The circuit breaker has a trip lever which normally is latched by a latch mechanism in an untripped position wherein it maintains the contacts in condition to be opened and closed by a manual operator. The latch mechanism releases the trip lever only upon the occurrence of abnormal current conditions whereupon the contacts are opened and the trip lever is returned to a tripped position. An indicator strip of flexible, nonconducting material having an indicating portion at its outer end is carried by the trip lever. The strip is pushed thereby endwise so that the outer end of the strip engages an interior wall of the housing of the circuit breaker and is guided therealong into alignment with a window in the wall, as the lever moves to tripped position, thereby indicating the tripped condition of the circuit breaker. The indicator strip flexes during its movement to and from trip indicating position to facilitate its proper movement.

公开(公告)号：US3585541A

公开(公告)日：1971-06-15

申请号：US3585541D

申请日：1969-09-16

Applicant: SQUARE D CO

Inventor： ERICKSON KENNETH W

IPC: H01H71/12

CPC classification number: H01H71/128

Abstract: An electric circuit breaker with a recessed pushbutton operable to move an armature member and an ambient temperature compensating bimetallic latching member endwise. Because of the manner in which the armature member is mounted, the members are also rotated to move the free end of the latching member out of latching relationship with a releasably latchable trip lever releasable to effect separation of a pair of contacts.

公开(公告)号：US3688228A

公开(公告)日：1972-08-29

申请号：US3688228D

申请日：1971-09-21

Applicant: SQUARE D CO

Inventor： PALMER NEIL R ,  KARGE JOSEPH R ,  ERICKSON KENNETH W

IPC: H01H3/26 ,  H01H13/18 ,  H01H3/02

CPC classification number: H01H3/26 ,  H01H13/18

Abstract: A remote-control actuating mechanism for the handle of an electric circuit breaker. A single-pole double-throw switch selectively controls the direction of rotation of a gearmotor output shaft and of a crank arm resiliently connected thereto by a flat overtravel spring. The crank arm is provided with a cross member connected to the circuit breaker handle. A pair of alternately operated normally closed ON and OFF limit switches interrupt the flow of current through the motor of the gearmotor respectively in opposite directions. An operating member for the limit switches is disposed between their depressible operating buttons and is provided with a lost-motion connection either to the crank arm or to the flat overtravel spring, the lost-motion enabling the circuit breaker handle to move to tripped position without affecting the limit switches. Friction holds the limit switch operating member in position when the circuit breaker trips and also when the driving force thereon in either direction is released by the opening of the circuit through the motor. The frictional force on the limit switch operating member is greater than the restoring force on the depressible operating button of a limit switch, and hunting, i.e., repeated starting and stopping of the motor, is eliminated.

Abstract translation: 一种用于电动断路器手柄的遥控执行机构。 单刀双掷开关选择性地控制减速电机输出轴和通过平面过行程弹簧弹性连接到其上的曲柄臂的旋转方向。 曲柄臂设置有连接到断路器手柄的横向构件。 一对交替操作的常闭ON和OFF限位开关分别在相反的方向上中断通过减速电机的电动机的电流。 用于限位开关的操作构件设置在其可压下的操作按钮之间，并且具有与曲柄臂或平面超行程弹簧相关的迷失运动连接，使得断路器手柄能够移动到跳闸位置的空转运动而没有 影响限位开关。 当断路器跳闸时，以及当通过电动机打开电路而将任一方向上的驱动力释放时，摩擦力将限位开关操作构件保持在适当位置。 限位开关操作构件上的摩擦力大于限位开关的按压操作按钮上的恢复力，并消除了马达的反复启动和停止。