Electrical arc protection using a trip contact

    公开(公告)号:US10230193B2

    公开(公告)日:2019-03-12

    申请号:US15814023

    申请日:2017-11-15

    摘要: A plug comprises power contacts and a plug trip contact. During a plugging action between the plug and a receptacle, the plug trip contact makes a trip connection with mating contacts in the receptacle. Electrical power to the receptacle allows a current through the trip connection, which causes disconnection of the power to the receptacle. A receptacle comprises receptacle power contacts and receptacle trip contacts. During a plugging action between the receptacle and a plug, trip contacts in the receptacle makes a trip connection with a mating contact in the plug. Electrical power to the receptacle allows a current through the trip connection, which can cause disconnection of the power to the receptacle. The receptacle can be included in an enclosure having a trip breaker with a trip mechanism. An electrical system can have an electrical device with a line cord connected to a plug having the trip contact.

    Electrical arc protection using a trip jumper

    公开(公告)号:US10229806B2

    公开(公告)日:2019-03-12

    申请号:US15813858

    申请日:2017-11-15

    摘要: A plug comprises power contacts and a trip jumper having jumper contacts configured to make a trip connection, during a plugging action with the plug and a receptacle, with mating trip contacts in the receptacle. When the receptacle is connected to electrical power during the plugging action, a current over the trip connection can cause disconnection of a receptacle power contact from the power. A receptacle comprises receptacle power contacts and a trip circuit having receptacle trip contacts configured to make a trip connection, during a plugging action with the receptacle and plug, with mating trip contacts in the plug. When the receptacle is connected to electrical power during the plugging action, a current over the trip connection can cause disconnection of power to a receptacle power contact. A system can have an electrical device with a line cord connected to the plug.

    ELECTRICAL ARC PROTECTION USING A TRIP CONTACT

    公开(公告)号:US20180123278A1

    公开(公告)日:2018-05-03

    申请号:US15814023

    申请日:2017-11-15

    摘要: A plug comprises power contacts and a plug trip contact. During a plugging action between the plug and a receptacle, the plug trip contact makes a trip connection with mating contacts in the receptacle. Electrical power to the receptacle allows a current through the trip connection, which causes disconnection of the power to the receptacle. A receptacle comprises receptacle power contacts and receptacle trip contacts. During a plugging action between the receptacle and a plug, trip contacts in the receptacle makes a trip connection with a mating contact in the plug. Electrical power to the receptacle allows a current through the trip connection, which can cause disconnection of the power to the receptacle. The receptacle can be included in an enclosure having a trip breaker with a trip mechanism. An electrical system can have an electrical device with a line cord connected to a plug having the trip contact.

    Electronic attenuation adjusting hearing protection device

    公开(公告)号:US10834491B2

    公开(公告)日:2020-11-10

    申请号:US16145967

    申请日:2018-09-28

    IPC分类号: H04R1/10 A61F11/14 H04R5/033

    摘要: Acoustic attenuating ear muffs include a first ear pod having a first ear cup provide with a first acoustic attenuating member including an outer surface, and a first opening. A second ear pod includes a second ear cup having a second acoustic attenuating member including an outer surface portion, and a second opening. A first selectively deployable plug member is mounted to the outer surface of the first acoustic attenuating member. A second selectively deployable plug member mounted to the outer surface of the second acoustic attenuating member. An acoustic sensor is operable to detect ambient noise. An actuator system is operable to shift the first and second selectively deployable plug members into corresponding ones of the first and second openings based on ambient noise detected by the acoustic sensor.