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公开(公告)号：US6040543A
公开(公告)日：2000-03-21
申请号：US373948
申请日：1999-08-13
CPC分类号： H01H23/162 , H01H9/042
摘要： A toggle switch includes a main housing that contains an electrical contact assembly operated by a cam member which opens and closes the contacts through movement of a leaf spring. The switch further includes a modular assembly of a housing cover to which a manually operable pivotable handle is mounted and is connected to a rotatable bushing supported shaft. The shaft operates a gear set attached to the cam member. The contacts provide an electrical connection to terminals that are insert molded into the housing. The terminals are configured to be provided with wire connecting screws accessible from the rear of the housing. The switch is thus explosion proof in construction and the rear mounted terminal screws avoid the possibility of shorting the live terminals to an associated metal electrical box. The switch is also readily constructed by known manufacturing methods and is capable of being directly installed in a standard electrical box thus avoiding the need for a separate explosion proof enclosure.
摘要翻译： 拨动开关包括主壳体，其包含由凸轮构件操作的电接触组件，该凸轮构件通过板簧的移动来打开和关闭触点。 开关还包括壳体盖的模块化组件，手动操作的可枢转手柄安装在壳体盖上并连接到可旋转衬套支撑轴上。 轴操作附接到凸轮构件的齿轮组。 触点提供与嵌入模制到壳体中的端子的电连接。 端子被配置成具有可从壳体的后部接近的导线连接螺钉。 该开关因此在结构上是防爆的，并且后部安装的端子螺丝避免了将带电端子短路到相关联的金属电箱的可能性。 该开关也可以通过已知的制造方法容易地构造，并且能够直接安装在标准电气箱中，从而避免需要单独的防爆外壳。
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公开(公告)号：US5717182A
公开(公告)日：1998-02-10
申请号：US672675
申请日：1996-06-28
摘要： A pair of fixed contacts is associated with a pair of movable contacts. All of the contacts have circular contact faces. A U-shaped stainless steel arc shield is provided adjacent each set of movable and fixed contacts. The semi-circular bight portion of the arc shield forms part of an imaginary circle having its center concentric with the centers of the contacts. Thus, the outer arcuate portions of the contacts are in constant spaced relationship with the arcuate portion of the adjacent arc shield. The actuator for the contacts provides for sequential opening of the sets of movable and fixed contacts.
摘要翻译： 一对固定触点与一对可动触点相关联。 所有触点都有圆形接触面。 在每组可移动和固定触点附近提供U形不锈钢电弧屏蔽。 弧形屏蔽件的半圆形弯曲部分形成其中心与触点中心同心的假想圆的一部分。 因此，触头的外弧形部分与相邻电弧屏蔽件的弧形部分保持恒定的间隔关系。 用于触点的致动器提供可移动和固定触点组的顺序打开。
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3.发明授权Explosion-proof switch with arc extinguishing gaseous byproduct venting feature and switch contact 失效防爆开关具有灭弧气体副产品通气功能和开关接触
公开(公告)号：US5260531A
公开(公告)日：1993-11-09
申请号：US856134
申请日：1992-03-23
摘要： An electrical switch and switch contact are disclosed, both of which are advantageous for use in an environment containing explosive gases or vapors. The switch housing is designed so that the two joints where explosive gases or vapors can enter or exit into the switch interior can cool any hot gases escaping from the switch interior. Therefore, if any explosive gases or vapors are ignited by an arc in the switch interior, they are cooled during their exit from the switch, so that they cannot ignite the explosive environment outside the switch. This is done using a labyrinthine path between the two switch housing members, and a lengthy metal-to-metal, metal-to-ceramic, or ceramic-to-ceramic path between the switch actuator and the switch housing. The contact is designed such that it has a greater flexural length, without requiring a substantial increase in the housing body volume. This allows a smaller amount of hazardous gas or vapor to come into contact with a potential arc. The contact design allows a good degree of overtravel and a contact cleaning action, both of which contribute to the reliability of the electrical connection made by the switch.
摘要翻译： 公开了电开关和开关触点，这两者都有利于在包含爆炸性气体或蒸汽的环境中使用。 开关壳体的设计使得爆炸性气体或蒸气可以进入或离开开关内部的两个接头可以冷却从开关内部逸出的任何热气体。 因此，如果任何爆炸性气体或蒸气被开关内部的电弧点燃，它们在从开关出来时被冷却，从而不能点燃开关外部的爆炸性环境。 这是通过在两个开关壳体构件之间的迷宫路径以及在开关致动器和开关壳体之间的长金属 - 金属，金属 - 陶瓷或陶瓷 - 陶瓷路径来实现的。 接触件被设计成使得其具有更大的弯曲长度，而不需要壳体体积的显着增加。 这允许较少量的有害气体或蒸气与潜在的电弧接触。 接触设计允许良好的超程和接触清洁动作，这两者都有助于由开关产生的电气连接的可靠性。
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公开(公告)号：US5243132A
公开(公告)日：1993-09-07
申请号：US822066
申请日：1992-01-17
申请人： Garrett S. Yarbrough
发明人： Garrett S. Yarbrough
IPC分类号： H02B1/28
CPC分类号： H02B1/28
摘要： The drain hole core for a drain seal fitting includes an elongated elastomeric member having a handle on one end, a rod-like member on the other end, and a integral plug between the handle and rod-like member. The drain hole core is inserted into the drain opening of the drain seal fitting such that the rod-like member extends up into the bore extending through the drain seal fitting and the plug seals the drain opening. A dam seals that area between the electrical wiring and the internal circumferential wall of the lower portion of the drain seal fitting. A sealing compound is then poured into an access opening in the side of the drain seal fitting so as to seal the bore of the drain seal fitting and to cover a portion of the rod-like member. Once the rod-like member is removed, it acts as a mold and provides a drain path from that portion of the bore above the sealing compound to the drain opening. The drain opening is then closed with a drain fitting. Upon the accumulation of water above the sealing compound, the accumulated water passes through the drain path and out the drain fitting.
摘要翻译： 用于排水密封配件的排水孔芯包括细长的弹性体构件，其在一端具有手柄，另一端具有杆状构件，以及在把手和杆状构件之间的整体塞子。 排水孔芯被插入到排水密封配件的排放开口中，使得杆状构件向上延伸到延伸穿过排水密封配件的孔中，并且塞子密封排水开口。 大坝密封电气布线和排水密封配件下部内周壁之间的区域。 然后将密封化合物倒入排水密封配件侧面的进入口中，以密封排水密封配件的孔并覆盖杆状构件的一部分。 一旦棒状构件被移除，其用作模具并且提供从密封化合物上方的孔的该部分到排出开口的排出路径。 排水口然后用排水管接头封闭。 在密封化合物上方积聚水时，积聚的水通过排出路径并排出排水接头。
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公开(公告)号：US5399807A
公开(公告)日：1995-03-21
申请号：US171441
申请日：1993-12-22
申请人： Garrett S. Yarbrough , John E. Cower , Kevin L. Browngardt , Susan M. Orzell , Robert P. Haytko , William G. Wright , Nelson L. Lansing
发明人： Garrett S. Yarbrough , John E. Cower , Kevin L. Browngardt , Susan M. Orzell , Robert P. Haytko , William G. Wright , Nelson L. Lansing
CPC分类号： H02G3/22
摘要： An explosion-proof electrical apparatus comprises two enclosures containing electrical devices. The enclosures are physically interconnected by a one-piece or two-piece hollow sleeve member which is screwed into threaded holes of the enclosures. A fitting assembly mounted in the sleeve member comprises a hollow feedthrough bushing screwed into the sleeve member, a hollow feedthrough seal member screwed into the feedthrough bushing, and a plurality of conductors extending through the feedthrough seal member and electrically connected to the electrical devices. The conductors are embedded in sealing compound which occupies the feedthrough seal member. During assembly of the fitting assembly, the feedthrough seal member is positioned within the sleeve, and the feedthrough bushing is screwed along the feedthrough seal member and is simultaneously screwed into the sleeve.
摘要翻译： 防爆电气设备包括两个包含电气设备的外壳。 外壳通过一体式或两件式的空心套筒构件物理互连，该套件被拧入外壳的螺纹孔中。 安装在套筒构件中的装配组件包括螺纹连接到套筒构件中的空心馈通衬套，螺纹连接到馈通衬套中的中空馈通密封构件，以及延伸穿过馈通密封构件并电连接到电气装置的多个导体。 导体嵌入到占据馈通密封构件的密封剂中。 在装配组件的组装期间，馈通密封构件位于套筒内，并且馈通衬套沿着馈通密封构件拧紧，并同时旋入套筒中。
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公开(公告)号：US5661265A
公开(公告)日：1997-08-26
申请号：US570316
申请日：1995-12-11
IPC分类号： H02G3/08
CPC分类号： H02G3/088
摘要： An explosion proof drain for incorporation into an enclosed electrical system including a hollow housing with an opening at an upper end and an annular flange circumscribing a smaller opening at a lower end. A porous, metallic disk is force fitted into a bore in the housing and seated against the annular flange. A filling material is poured into the bore of the housing and is supported by the porous metallic disk. A second porous, metallic disk is force fitted into the opening in the upper end of the drain to ensure that the sand does not exit the drain.
摘要翻译： 一种用于结合到封闭式电气系统中的防爆排水装置，包括在上端具有开口的中空壳体和在下端限定较小开口的环形凸缘。 多孔的金属盘被强制地装配到壳体中的孔中并靠在环形凸缘上。 填充材料被倒入壳体的孔中并由多孔金属盘支撑。 第二个多孔金属盘被强制装配到排水管上端的开口中，以确保砂子不会从排水口排出。
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公开(公告)号：US5449302A
公开(公告)日：1995-09-12
申请号：US111260
申请日：1993-08-24
IPC分类号： H01R13/645 , H01R13/502
CPC分类号： H01R13/645
摘要： The present invention serves to prevent severe injury, loss of life or damage to expensive equipment by creating a system in which the conductors of a plug and the conductors of a receptacle can only be arranged, one with respect to the other, in a unique rotational manner depending upon the intended electrical rating of the plug and receptacle. The resulting plug will mate only with a receptacle having that same configuration. A separate indexer is disposed between the plug body and the conductor assembly to the conductors in the plug to prevent entry of the plug into a differently indexed receptacle. A polarizer in the receptacle fixes the conductor assembly of the receptacle in the same manner as the plug, to allow the plug and receptacle to be mated together when the receptacle is wired for the same electrical rating as the equipment to be energized by the plug. Visual means of identifying the rotational attitude of conductors is provided whereby the electrical rating of the plug or receptacle can be easily identified. The visual means of identification may include color as well as printed coding information.
摘要翻译： 本发明用于通过创建一种系统来防止严重的伤害，寿命损失或损坏昂贵的设备，其中插头的导体和插座的导体只能以独特的旋转方式相对于另一个布置 取决于插头和插座的预期电气额定值。 所得到的插头只能与具有相同配置的插座配合。 插头主体和导体组件之间的一个单独的分度器设置在插头中的导体上，以防止插头进入不同索引的插座。 插座中的偏振器以与插头相同的方式固定插座的导体组件，以便当插座被连接到与被插头激励的设备相同的额定电位时，将插头和插座配合在一起。 提供了识别导体的旋转姿态的视觉装置，由此能够容易地识别插头或插座的电气额定值。 识别的视觉方式可以包括颜色以及打印的编码信息。
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8.发明授权Ground fault circuit breaker test circuit for panelboards having minimum penetrations and testing circuit breakers without opening panelboard enclosure 失效具有最小穿透面积的电路板的接地故障断路器测试电路和测试断路器，而不会打开电路板外壳
公开(公告)号：US5334939A
公开(公告)日：1994-08-02
申请号：US975858
申请日：1992-11-13
申请人： Garrett S. Yarbrough
发明人： Garrett S. Yarbrough
CPC分类号： H02B1/04 , G01R31/3277 , H01H83/04
摘要： A ground fault circuit interrupter (GFCI) circuit breaker test circuit for use with panelboards uses a selector switch, normally open switch, and a resistor to simulate a fault condition at the load output node of any one of several GFCI circuit breakers. This arrangement allows for testing of the circuit breakers while eliminating the need to use an external test actuator to operate the manual test button of each circuit breaker. Thus, shaft penetrations through the panelboard enclosure are minimized, resulting in reduced hazards, increased reliability, easier testing, and greater economy.
摘要翻译： 用于面板的接地故障断路器（GFCI）断路器测试电路使用选择开关，常开开关和电阻来模拟几个GFCI断路器中任何一个的负载输出节点的故障状态。 这种布置允许测试断路器，同时不需要使用外部测试致动器来操作每个断路器的手动测试按钮。 因此，通过面板外壳的轴穿透被最小化，导致危害降低，可靠性提高，测试更容易，经济性更强。
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