Патент USA US2129892код для вставки
Sept. 13, 1938. H. VATTER VACUUM CIRCUIT BREAKER Filed Sept. 14, 1936 2,129,892 Patented Sept. 13, 1938 2,129,892 UNITED STATES PATENT oFElcE 2,129,892 l VACUUM CIRCUIT BBEAKEB Hans Vatter, Berlin-Charlottenburg, Germany, assigner to Siemens & Halske Aktiengesell schaft, Siemennstadt, near Berlin, Germany, a corporation of Germany Application September 14, 1936, Serial No. 190,632 « 5 10 l5 20 In Germany September 3, 1935 4 Claims. (Cl. 20o-144) My invention relates to improvements in vac of the drawing experiences a smaller resistance uum circuit breakers. than in other directions of axis. , ì It ~is well known in the art to design vacuum One of the electrodes is preferably formed as -circuit breakers in such a manner that the ac a ring, in the interior of which is placed the other tuation of the switching members is effected in electrode. In this manner, the movable elecside‘the vacuum vessel by means of an elastic portion of the vessel wall. For instance, in glass ' trode is brought into proper engagement with the other electrode, irrespective of the direction bulb switches a portion of the glass surface has of motion of the movable electrode. By dimen hitherto been made elastic by designing it in sioning the outer diameter of the ring in a cor the form of corrugated sheet iron. Glass bulb responding manner the maximum deflection of switches have the great disadvantage in that they the movable electrode may at the same time be are comparatively fragile so that they cannot be limited. Fig. 2 shows a sectional view of such used for rough services, particularly for military «a vacuum circuit breaker. 'I‘he movable electrode purposes on field vehicles or the like. 9 carries a ring I4 inside of which >is placed the According to the invention, vacuum circuit iixed electrode. The electrode 9 comes into enbreakers of high resistivity and efliciency are gagement with the electrode 9 independently of designed in the way illustrated by the accom the direction of motion of the electrode 9. 'I'he panying drawing in which p maximum deñection is attained when the outer Fig. l shows a circuit breaker in longitudinal edge of the ring I4 contacts with the inner wall section, and of the tube I. Fig. 2 a central transverse section through` a I claim as my invention: modifled form of the breaker. . 'I‘he enclosure of the circuit breaker shown in Fig. 1 consists of a tube I of vacuum-tight « 25 ceramic material. The ends of the >tube are metallized as indicated at 2 and 3; One end'of the tube is closed by a metallic cap 4 which is soldered at 3 to form a vacuum-tight joint. The soldering is effected in the manner that a ringä 30 consisting of soldering material is at ñrst ar ranged in the cap. To prevent the soldering material from ñowing inside the discharge vessel a disc 6 is so arranged as to cause the molten soldering material to ñow in the joint l. The cap 35 I may at the same time serve to support one electrode 8. 'I'he electrode 9 or the counter electrode 9 may be designed at least in part as a tube and serve as a connection for a vacuum pump during the manufacturing process. The 40 other end of the tube I carries, for instance, a flange-shaped extension Il), at the periphery II of which is soldered or welded a metallic dia phragm I2. The counter-electrode 9 is secured to the metal 45 lic diaphragm so that when the outer portion of the electrode 9 is moved the electrodes 9 and 9 may be brought into engagement at I3. It is understood that also any other contact mecha nism which is actuated upon moving the part 9, 50 -may be arranged in the interior of the tube. In ' some cases it may be preferable not to give the diaphragm I2 a circular form but design it in , such a manner that the movement of the part 9 in the direction of one of the axes of the dia'. 55 phragm I2, as shown bythe arrows in the plane 5 l0 15 20 1. As an article of manufacture, a vacuum switch comprising a tube of ceramic material adapted to> be evacuated, a fixed and a movable contact element cooperatively disposed in said 25 tube, two metal end caps for closing the two tube ends, each cap electrically connected with one of said contact elements and serving as a support therefor, each tube end having `a metal layer vac uum-tight attached to its wall with which the 30 appertaining cap is in contact and solder for vacuum-tight connecting each cap with the con tacting metal layer, a protective disc arranged between each of said caps and the interior part of _said tube and extending across the tube open- 35 ing inside of each cap designed to conñne the solder flow to the joint between the inner cap wall and the adjacent metal layer, one of said caps having an elastic wall in which the movable contact element is mounted vacuum-tight inter- 40 mediate its-ends to permit the movement of said element from outside. . 2. As an article of manufacture, a vacuum switch comprising a tubular container of ceramic material, a metallic coating disposed on the out- 45 side surface of each end of said container, a metal cap placed over each end of said container, two coacting contact electrodes movable relative to each other, each being mounted ,to one of said 'caps respectively, a solder bond tightly connect- 50 ing said coating and said cap, and a protective disk'arranged in said cap so as to close the in terior of said container against said solder. 3. As anv article of manufacture, an evacuated ceramic tube forming the enclosure of an elec- 55 2 2,129,892 tric control device and having a tube opening covered by a metal cap, in combination with a metallic coating disposed on and integral with the surface portion oi' said tube covered by said can. solder forming a bond between said coating and said cap, said cap and said tube being de signed to form an annular interstice for the reception oi a ring-shaped body consisting of said solder so as to allow producing said bond by heating said body within said cap, and a protec tive disk arranged in said cap and closing said opening against said solder for coniining the now o! said solder. ' 4. As an article of manufacture, an electric device comprising a container oi ceramic maœ rial having an opening covered by a metal cap. in combination with a metal coating disposed on and integral with the ceramic surface oi said container, a solder bond connecting said coating and said cap, and a protective member disposed ln said cap so as to close said opening against said solder in order to conñne the iiow of said solder to the joint between cap and coating when 10 producing said bond. HANS VAT'I'ER.