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    • 3. 发明授权
    • Metal enclosed switchgear having well-shaped front covers
    • 金属封闭开关柜具有良好的前盖
    • US3989986A
    • 1976-11-02
    • US509606
    • 1974-09-26
    • James R. FarleyJohn G. SalvatiLouis N. Ricci
    • James R. FarleyJohn G. SalvatiLouis N. Ricci
    • H02B1/21H02B1/10
    • H02B1/21
    • Each section of a three-phase metal enclosed switchgear unit is provided with main through horizontal bus and vertical section bus. The front of each switchgear section is divided into vertically disposed enclosures for housing circuit breakers or circuit interrupting devices. The circuit breakers are mounted close to the vertical section bus with the front of the circuit breaker and the circuit breaker operating handle recessed from the front of the switchgear section. Pan or well-shaped front covers, having a bottom surface flushed with the circuit breaker fit over the front of the vertically disposed enclosures and are mounted to the front of the switchgear section. Different depth wells or pans are used for the front cover, with the depth being determined by the circuit breaker physical size, which is dependent on the breaker rating. The surface of the well flush with the circuit breaker device has a cutout through which the circuit breaker operating handle projects. The front cover wells provide a dead front construction with easy access to the circuit breaker operating handles. A portion of the cover well approximately flushed with the front of the circuit breaker can have additional cutouts for showing breaker rating and providing easy access to external magnetic breaker adjustments.
    • 三相金属封闭开关柜单元的每个部分设有主水平总线和垂直分段总线。 每个开关柜部分的前部分为垂直布置的外壳,用于容纳断路器或电路中断装置。 断路器与断路器的前部靠近垂直段总线安装,断路器操作手柄从开关柜前部凹入。 盘形或形状良好的前盖,其底表面用电路断路器冲洗,并配置在垂直布置的外壳的前面,并安装在开关柜的前部。 前盖使用不同深度的井或平底锅,深度由断路器的物理尺寸决定,这取决于断路器额定值。 与断路器装置齐平的井的表面具有断路器,断路器操作手柄通过该开口突出。 前盖井提供了一个死前的结构,可方便地接近断路器操作手柄。 与断路器前部大致冲洗的盖子的一部分可以具有额外的切口,用于显示断路器额定值并提供容易地接近外部磁断路器调节。
    • 6. 发明授权
    • Stored energy circuit breaker
    • 存储能源断路器
    • US4166205A
    • 1979-08-28
    • US755768
    • 1976-12-30
    • Alfred E. MaierLouis N. RicciDonald D. Armstrong
    • Alfred E. MaierLouis N. RicciDonald D. Armstrong
    • H01H33/62H01H1/22H01H3/30H01H33/40H01H71/50H01H73/38H01H3/60
    • H01H71/50H01H1/226H01H2001/5838H01H2003/3094H01H2071/1036H01H3/3015H01H3/3031
    • A circuit breaker having stationary and movable contacts operable between open and closed positions with the movable contact being biased in an open position. The movable contact is mounted to a contact and spring holder which engages one link in a toggle means. The first link is connected to a second link which has a drive pin secured thereto, and the second link is pivotally connected to a toggle lever. A cam is secured to a rotatable drive shaft, and the cam engages a cam roller which is secured to a follower plate. The follower plate, which rotates about an axis different from the drive shaft axis, has a drive pawl attached thereto, with the drive pawl being disposed adjacent the drive pin. Spring means are pivotally connected to the follower plate and are capable of being in spring charged and discharged positions. The spring is charged by rotation of the drive shaft and cam causing the cam roller to move outwardly. The outward movement of the cam roller causes rotation of the follower plate, resulting in charging of the spring means. The degree of rotation of the cam during the charging rotation is more than twice the degree of rotation of the follower plate, thereby gaining a mechanical advantage. When the spring means discharges, it causes rotation of the follower plate such that the drive pawl is capable of engaging the drive pin to move the toggle means into toggle position. Upon moving into toggle position, the toggle means moves the contact holder and movable contact into closed position. Also included are releasable toggle and drive latch means for holding the toggle means in toggle position and the follower plate in the spring charged position, respectively.