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1.发明授权
公开(公告)号：US4894497A
公开(公告)日：1990-01-16
申请号：US308141
申请日：1989-02-08
申请人： Jennings Lycan
发明人： Jennings Lycan
摘要： A high temperature pressure switch assembly for an explosion-proof enclosure used in hazardous atmospheres comprises an electrical control switch for a remote power source supplying electrical power to the enclosure, and a pressure responsive member which actuates the control switch to disconnect the power source in response to a small but abrupt pressure rise within the enclosure which indicates an explosion, severe electrical arcing or insulation pyrolysis therewithin.
摘要翻译： 用于危险环境中的用于防爆外壳的高温压力开关组件包括用于向外壳提供电力的远程电源的电气控制开关以及致动控制开关以响应于断开电源的压力响应构件 在外壳内的小而突然的压力升高，这表明爆炸，严重的电弧或其中的绝热热解。
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公开(公告)号：US4737603A
公开(公告)日：1988-04-12
申请号：US71338
申请日：1987-07-09
申请人： Jennings Lycan
发明人： Jennings Lycan
CPC分类号： H01H19/635 , H01H3/20 , H01H31/003 , H01H9/042
摘要： An isolation switch comprises a mounting plate with a hub adapted to extend forwardly through a wall of an explosion-proof enclosure. A shaft is journaled for axial movement in the hub. First and second stationary contact members are supported on the mounting plate. The first stationary contact member has input and output power contacts, and the second stationary contact member has first and second grounding contacts. Jumpers connect the output power contacts with the second set of grounding contacts. A moveable contact member is moveable by the shaft between a "closed" position connecting the input and output power contacts; and an "open and load-side-grounded" position disconnecting the input and output power contacts and connecting the output power contacts to ground through the grounding contacts. A handle assembly is eccentrically pivoted on the forward end of the shaft, is guided for forward and backward swinging movement, and has cam bosses guided for transverse movement relative to the shaft. The handle assembly has a transverse latch bar connected to a moveable sleeve and has detent tongues engageable with detent flanges on an operator latch guide at the forward end of the hub to hold the handle assembly in closed or open position. In the embodiment shown, the latch bar and detent flanges are asymmetric, that is, the latch bar is eccentrically mounted and the detent flanges are at different axial heights corresponding to the eccentricity of the latch bar.
摘要翻译： 隔离开关包括具有毂的安装板，其适于向前延伸穿过防爆外壳的壁。 一个轴被轴颈轴向运动在轮毂上。 第一和第二固定接触构件被支撑在安装板上。 第一固定接触构件具有输入和输出功率触点，并且第二固定触头构件具有第一和第二接地触点。 跳线将输出电源触点与第二组接地触点相连。 可移动的接触构件可以通过轴在连接输入和输出电源触点的“闭合”位置之间移动; 和“开路和负载侧接地”位置，断开输入和输出电源触点，并通过接地触点将输出电源触点连接到地。 手柄组件在轴的前端偏心地枢转，被引导用于向前和向后摆动，并且具有相对于轴横向移动的凸轮凸台。 手柄组件具有连接到可移动套筒的横向闩锁杆，并且具有棘爪舌片，其可与位于轮毂的前端处的操作者闩锁引导件上的止动凸缘接合，以将手柄组件保持在关闭或打开位置。 在所示的实施例中，闩锁杆和止动凸缘是不对称的，即，闩锁偏心安装，并且止动凸缘处于与闩锁杆的偏心度相对应的不同轴向高度。
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公开(公告)号：US4639558A
公开(公告)日：1987-01-27
申请号：US815520
申请日：1986-01-02
申请人： Jennings Lycan
发明人： Jennings Lycan
摘要： A reversing switch comprises a mounting plate assembly with a hub extending forwardly through a wall of an explosion proof enclosure. A shaft is journaled for rotational and axial movement in the hub. A stationary contact assembly includes four circumferentially spaced contacts. A moveable contact assembly includes four circumferentially spaced contacts mounted on the shaft. The shaft extends through an external operator member at the forward end of the hub. The operator member is connected to the hub by a groove and flange arrangement preventing fore and aft movement but enabling rotational movement about the hub. A pair of forwardly extending side walls each with a transverse guide slot are connected to the operator member. A handle member with a pair of combined lever and cam arms is connected to the operator member and the shaft. A pair of bosses on the lever and cam arms are seated in the guide slots and there is a pivotal connection between the shaft and portions of the lever arms offset eccentrically from the bosses. The bosses act as moveable fulcrums moving in the guide slots in response to forward and backward swinging movements of the handle. A pair of cam surfaces on the handle engage the operator member and supplement the action of the levers in moving the shaft.
摘要翻译： 反转开关包括安装板组件，其具有向前延伸穿过防爆外壳的壁的轮毂。 一个轴被轴颈用于轮毂中的旋转和轴向运动。 固定触头组件包括四个周向间隔开的触头。 可移动接触组件包括安装在轴上的四个周向间隔开的接触件。 轴在轮毂的前端延伸穿过外部操作构件。 操作构件通过凹槽和凸缘装置连接到轮毂，防止前后移动，但是能够围绕轮毂进行旋转运动。 一对向前延伸的侧壁各自具有横向引导槽连接到操作者构件。 具有一对组合的杆和凸轮臂的手柄构件连接到操作构件和轴。 杠杆和凸轮臂上的一对凸起位于导向槽中，并且在轴和杠杆臂的部分之间有一个枢轴连接，偏心地与凸台偏心。 凸起作为响应于手柄的向前和向后摆动运动而在引导槽中移动的可移动支点。 手柄上的一对凸轮表面接合操作者构件，并补充杠杆在移动轴时的动作。
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公开(公告)号：US4563549A
公开(公告)日：1986-01-07
申请号：US662493
申请日：1984-10-18
申请人： Jennings Lycan
发明人： Jennings Lycan
摘要： A reversing switch comprises a mounting plate assembly with a hub adapted to extend forwardly through a wall of an explosion proof enclosure. A shaft is journaled for both rotational and axial movement in the hub. A stationary contact assembly consists of a first set of four evenly circumferentially spaced contacts, each with a connecting terminal, mounted on an insulator base. A movable contact assembly consists of a second set of four evenly circumferentially spaced contacts mounted on an electrical insulating member connected to the shaft. Adjacent pairs of the movable contacts are interconnected. The shaft has an external handle with a unique cam and rotatable eccentric pivot connection for moving the shaft axially to engage or disengage the contacts when the handle is pivoted forward and backward a half turn, and for rotating the shaft to reverse the contacts when the handle is rotated a quarter turn. One or more control switches between the contact assemblies are actuated by relative movement between the contact assemblies for a variety of control and monitoring functions. A spring normally urges the contacts apart.
摘要翻译： 反转开关包括安装板组件，其具有适于向前延伸穿过防爆外壳的壁的毂。 一个轴用于轮毂中的旋转和轴向运动。 固定接触组件由第一组四个均匀周向隔开的触头组成，每个触头具有安装在绝缘体基座上的连接端子。 可移动接触组件由安装在连接到轴的电绝缘构件上的第二组四个均匀周向隔开的触头组成。 相邻的可动触头对相互连接。 轴具有外部手柄，其具有独特的凸轮和可旋转的偏心枢转连接件，用于当手柄向前和向后转动半圈时轴向移动以接合或分离触点，并且当手柄旋转时使轴转动以反向触点 旋转四分之一圈。 触点组件之间的一个或多个控制开关通过用于各种控制和监视功能的触点组件之间的相对移动而被致动。 春天通常会将触点分开。
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