公开(公告)号：US3812440A

公开(公告)日：1974-05-21

申请号：US30774672

申请日：1972-11-17

Applicant: SQUARE D CO

Inventor： COOK D

IPC: H01H50/32 ,  H01H9/22

CPC classification number: H01H50/32

Abstract: A latching attachment is provided for an electromagnetic relay. An insert for the relay movable contact carrier is employed in association with the latching attachment and the insert has at least one projection extending therefrom. The latching attachment includes a rotatable plate, mounted adjacent the insert projection and having an aperture therethrough and the plate is biased into a position in which the aperture is less than fully aligned with the projection on the insert, thereby preventing return of the contact carrier from its energized position to its de-energized position after the relay has been energized and subsequently de-energized. Manual and electromagnetic operators are provided for rotating the plate aperture into full alignment with the insert projection for releasing the relay contact carrier.

公开(公告)号：US3775710A

公开(公告)日：1973-11-27

申请号：US3775710D

申请日：1972-07-28

Applicant: SQUARE D CO

Inventor： COOK D

IPC: H01H43/28 ,  H01H50/88 ,  H01H7/03

CPC classification number: H01H43/28 ,  H01H50/88

Abstract: A timing chamber is defined by a flexible diaphragm having an exhaust port controlled by a valve. During the time period, air enters the timing chamber at a rate determined by relatively rotatable and facing timing discs defining a capillary path of variable length therebetween. The rate of entry of air into the timing chamber determines the time period by controlling the rate of return of the diaphragm to a normal position and a corresponding movement of a contact carrier to a normal position. The contact carrier has an offset foot portion which is engaged by a rocker driven by the armature of the relay to reset the timer. By mounting the timing attachment selectively in two different turned positions on a relay, time delay after energization or after de-energization of the relay is provided.

Abstract translation: 定时室由具有由阀控制的排气口的柔性隔膜限定。 在该时间段期间，空气以相对可旋转和面对的定时盘确定的速率进入定时室，该速度限定了其间可变长度的毛细管路径。 空气进入定时室的速率通过将隔膜的返回速度控制到正常位置和接触载体相对于正常位置的相应运动来确定时间段。 接触托架具有偏移脚部，该偏移脚部由由继电器的电枢驱动的摇杆接合以复位定时器。 通过在继电器上选择性地将定时附件安装在两个不同的转动位置中，提供通电之后的时间延迟或继电器断电之后。