公开(公告)号：US5103069A

公开(公告)日：1992-04-07

申请号：US700937

申请日：1991-05-13

申请人： Mitsumasa Yorita

发明人： Mitsumasa Yorita

IPC分类号： H01H33/664

CPC分类号： H01H33/6643

摘要： An electrode for a vacuum breaker includes a central flat part having a contact function, peripheral tapered parts having a current-breaking function, and spiral slots formed in the electrode that are inclined with respect to the radial direction. The maximum and minimum widths of the spiral slot L (mm) are given by the formulae:L.sub.min (mm)=0.0608(mm/kA).times.I(kA).times.0.8andL.sub.max (mm)=0.0608(mm/kA).times.I(kA) .times.1.2whereI=(rated circuit breaking current).times. (1+DC component fraction)(kA).The width of the spiral slot L is optimized for the required breaking current which makes it possible to further improve the breaking performance. The spiral slot may have a maximum width on the outer circumference of the electrode, which gradually becomes more narrow toward the center, and reaches a minimum width on the inner extremity. By making the slot width L gradually decrease toward the center, a stable operation is possible over a wide range of breaking currents.

公开(公告)号：US4760222A

公开(公告)日：1988-07-26

申请号：US99747

申请日：1987-09-22

申请人： Mitsumasa Yorita

发明人： Mitsumasa Yorita

IPC分类号： H01H33/66 ,  H01H1/66 ,  H01H33/662

CPC分类号： H01H33/66261 ,  H01H2033/66284 ,  H01H2033/66292

摘要： A vacuum circuit interrupter comprising in a vacuum vessel at least a pair of a separable stationary electrode and a movable electrode, and a main shield concentrically surrounding the electrodes. The main shield has a large-diameter portion at the central portion and a small-diameter portion at opposite ends. The axial length L of the large-diameter portion of the main shield is the length expressed by: ##EQU1## where, .PHI..sub.2 =inner diameter of the large-diameter portion of main shield, and .PHI..sub.1 =outer diameter of the electrode. The taper angle from the large-diameter portion to the small-diameter portion is selected to be 80.degree..about.100.degree..

摘要翻译： 一种真空断路器，在真空容器中包括至少一对可分离固定电极和可动电极，以及同心地围绕电极的主屏蔽。 主屏蔽体在中心部分具有大直径部分和相对端部的小直径部分。 主屏蔽的大直径部分的轴向长度L是由下式表示的长度：其中，PHI2 =主屏蔽的大直径部分的内径，PHI1 =电极的外径。 从大直径部到小直径部的锥角选择为80°D差100度。

公开(公告)号：US4585913A

公开(公告)日：1986-04-29

申请号：US640324

申请日：1984-08-13

申请人： Mitsumasa Yorita

发明人： Mitsumasa Yorita

IPC分类号： F16J3/04 ,  F16J15/52 ,  H01H33/662 ,  H01H33/66 ,  F16L11/00 ,  F16L21/00

CPC分类号： H01H33/66238 ,  F16J15/52 ,  F16J3/048

摘要： A bellows device having a plurality of recesses and ridges in the direction of expansion and contraction is used for a movable part of a vacuum switch tube. The thickness of an middle part in the direction of expansion and contraction is 1.2 times or more than the thickness of a part placed adjacent the middle part. The middle part has three or more ridges.

摘要翻译： 在真空开关管的可动部分使用具有在膨胀和收缩方向上的多个凹槽和脊的波纹管装置。 中间部分的膨胀方向的厚度为中部附近的部位的厚度的1.2倍以上。 中间有三个或更多个脊。