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公开(公告)号：US4169254A
公开(公告)日：1979-09-25
申请号：US864262
申请日：1977-12-27
摘要： The manually actuable electric switch has a fusible element which melts on subjection to a predetermined temperature to discontinue the flow of electric current through the switch. The structure is incapable of operation on melting of the fusible element without replacement of the element, thereby preventing accidental reactivation of the switch prior to termination of the unusual thermal conditions causative of the melting of the element. A manually operable plunger normally used to open and close the switch is mechanically connected to the stem of the switch through the fusible element. Melting of the element severs the mechanical connection between the plunger and the switch.
摘要翻译： 可手动致动的电开关具有可熔化的元件，其熔化在预定温度下，以中断通过开关的电流。 该结构不能在不更换元件的情况下熔化可熔元件进行操作，从而防止在导致元件熔化的异常热条件终止之前意外重新启动开关。 通常用于打开和关闭开关的可手动操作的柱塞通过可熔元件机械连接到开关的杆上。 元件的熔化会切断柱塞和开关之间的机械连接。
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公开(公告)号：US4132237A
公开(公告)日：1979-01-02
申请号：US682892
申请日：1976-05-03
CPC分类号： F16K17/22 , F16K17/32 , Y10T137/1819
摘要： A shutoff valve installed on the discharge side of a pump to automatically shutoff hazardous liquid flow in the event of a rupture on the downstream side of the shutoff valve. The shutoff valve operates in response to a predetermined pressure drop across a valve and may also function to stop the driver of the pump and close the shutoff valve in response to excessive temperature conditions. Various installational arrangements may be provided in order to associate the shutoff valve with the hazardous fluid flow line.
摘要翻译： 安装在泵的排放侧的截止阀，在断流阀的下游侧发生破裂时自动关闭危险液体流。 截止阀响应于阀上的预定压降而操作，并且还可以用于停止泵的驱动器并响应于过高的温度条件闭合截止阀。 可以提供各种安装布置，以便关闭截止阀与危险流体流动管线。
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