公开(公告)号：US4308441A

公开(公告)日：1981-12-29

申请号：US93091

申请日：1979-11-09

申请人： David M. Evans ,  Joel A. Ramos

发明人： David M. Evans ,  Joel A. Ramos

IPC分类号： G05G5/02 ,  G05G23/00 ,  H01H3/04 ,  H01H9/28 ,  H01H25/00

CPC分类号： H01H3/04 ,  G05G23/00 ,  G05G5/02 ,  H01H9/282

摘要： A manual operating handle assembly for an enclosed switch includes a walled frame which resides within the switch enclosure and rotatably mounts a shaft. A sprocket on the shaft turns therewith to move a chain coupled to another sprocket which operates the switch or a stored-energy operator therefor. A pair of arms keyed to the shaft mounts a handle for longitudinal sliding movement toward the shaft and into the frame, and away from the shaft and out of the frame. Rotation of the handle between extreme rotative locations rotates the arms and the shaft. A contoured surface within the frame interferes with the handle in its extreme rotative locations when it is within the frame to prevent rotation thereof. Only if the handle is first slid out of the frame does it clear the surface for rotation between its extreme rotative locations. When the handle is between its extreme rotative locations, it cannot be slid into the frame due to interference of the contoured surface. The handle may be locked when it is in either extreme rotative location and within the frame, whereat it presents a low profile, is shielded from the elements, and is virtually pryproof and vandal-proof.

摘要翻译： 用于封闭开关的手动操作手柄组件包括位于开关外壳内且可旋转地安装轴的壁框架。 轴上的链轮随之转动，以移动联接到操作开关的另一个链轮的链条或用于其的存储能量操作器。 键在轴上的一对臂安装一个手柄，用于纵向滑动运动，朝向轴并进入框架，远离轴并离开框架。 手柄在极端旋转位置之间的旋转使臂和轴旋转。 框架内的轮廓表面在框架内的手柄处于极端旋转位置时会妨碍手柄旋转。 只有手柄首先从框架上滑出才能使表面在其极端旋转位置之间旋转。 当手柄位于极端旋转位置之间时，由于轮廓表面的干涉，它不能滑入框架。 当手柄处于极端旋转位置并且在框架内时，手柄可能被锁定，其中它呈现低轮廓，与元件屏蔽，并且实际上是防伪和防破坏的。

公开(公告)号：USD254615S

公开(公告)日：1980-04-01

申请号：US837246

申请日：1977-09-27

申请人： David M. Evans ,  Henry W. Scherer

设计人： David M. Evans ,  Henry W. Scherer

公开(公告)号：USD254545S

公开(公告)日：1980-03-25

申请号：US837239

申请日：1977-09-27

申请人： David M. Evans ,  Henry W. Scherer

设计人： David M. Evans ,  Henry W. Scherer

公开(公告)号：US3991348A

公开(公告)日：1976-11-09

申请号：US564175

申请日：1975-04-01

申请人： David M. Evans

发明人： David M. Evans

IPC分类号： H02B11/26 ,  H02B9/00

CPC分类号： H02B11/26 ,  H01H2009/0292

摘要： Disclosed is an apparatus for restricting access to the electrically charged portions within metal enclosed high voltage switchgear. The apparatus is adapted for use with a tool that can be inserted into the enclosure to open a tap switch and remove a series connected high voltage fuse. Normally, access ports into the metal enclosure are closed by pivotably mounted covers to restrict access. Insertion of the tool into a receptacle around the access port opens the covers so that a portion of the tool can be inserted into the enclosure to open the tap switch thereby isolating the fuse and to engage the fuse so that it can be removed. The tool engages a ring member mounted around the access port so that operation of the tool moves the ring member. Operably connected to the ring member is an indicator member that moves in response to movement of the ring member to align an appropriate message in front of a window in the enclosure so that the condition of the switchgear is indicated. Also, the metal portions of the tool are grounded to prevent possible electrical shock to the tool operator.

摘要翻译： 公开了一种用于限制进入金属封闭式高压开关装置内的带电部分的装置。 该装置适于与可以插入外壳的工具一起使用以打开抽头开关并移除串联的高压保险丝。 通常，通过可枢转安装的盖子关闭金属外壳的进入端口以限制访问。 将工具插入入口周围的容器中，打开盖子，使得工具的一部分可以插入到外壳中以打开抽头开关，从而隔离保险丝并接合保险丝，使其可以被移除。 该工具接合安装在接近端口周围的环件，使得工具的操作使环件移动。 可操作地连接到环构件的是指示构件，其响应于环构件的移动而移动，以将适当的消息对准在外壳中的窗口前面，使得指示开关装置的状态。 此外，工具的金属部分接地以防止对工具操作者的电击。