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43. 发明专利

CA1142218A LINE PROTECTOR FOR A COMMUNICATIONS CIRCUIT 未知
公开(公告)号：CA1142218A
公开(公告)日：1983-03-01
申请号：CA377185
申请日：1981-05-08
申请人： RELIANCE ELECTRIC CO
发明人： BAUMBACH BERTRAM W
IPC分类号： H02H9/06 , H01T1/14 , H01T4/06 , H01T3/00
摘要： Raumbach Case 291 A line protector has a housing with coaxial surge voltage arresters, line terminals and a ground terminal. One line terminal is substantially at one end of the cavity of the housing while the other line terminal extends substantially the full length of the cavity of the housing. The ground terminal extends from between the arresters to said one end of the housing cavity. Each terminal projects from the housing at said one end. The three terminals are insultated from the arresters by barrier walls in the housing. A cover closes a side opening in the housing through which the components of the protector are inserted.

47. 发明专利

CA1137541A SURGE VOLTAGE ARRESTOR WITH VENTSAFE FEATURE 未知
公开(公告)号：CA1137541A
公开(公告)日：1982-12-14
申请号：CA344135
申请日：1980-01-22
申请人： RELIANCE ELECTRIC CO
发明人： GILBERTS ALEXANDER G
IPC分类号： H01T4/04 , H01T1/14 , H01T3/00
摘要： SURGE VOLTAGE ARRESTER WITH VENTSAFE FEATURE A surge voltage arrester assembly for protecting telephone lines comprises a primary gas tube surge arrester and an air gap secondary arrester that provides surge protection should the gas tube become vented to atmosphere. The secondary arrester has the air gap defined by a rim of one of the gas tube electrodes and a metallic cup into which the gas tube is positioned. In a three element version of the invention wherein the gas tube has two line electrodes and a ground electrode, metallic cups are provided at opposite ends of the gas tube to cooperate with the ground electrode for forming secondary air gaps for each line electrodes. An O-ring and a sealing compound seals each secondary air gap against the entrance of contaminants.

49. 发明专利

DE2951467C2 未知
公开(公告)号：DE2951467C2
公开(公告)日：1982-06-24
申请号：DE2951467
申请日：1979-12-20
申请人： SIEMENS AG, 1000 BERLIN UND 8000 MUENCHEN, DE
发明人： LANGE, GERHARD, ING.(GRAD.) , SIPPEKAMP, OSKAR, 1000 BERLIN, DE , SCHWENDA, GERHARD, 8501 VINCENZENBRONN, DE
IPC分类号： H01T1/14 , H01T3/00

50. 发明专利

DE2131296C2 未知
公开(公告)号：DE2131296C2
公开(公告)日：1982-04-29
申请号：DE2131296
申请日：1971-06-24
申请人： BBC BROWN BOVERI & CIE
发明人： MEIER E
IPC分类号： H01T1/04 , H01T3/00
摘要： A quench-gap assembly of a lightning arrester includes a cylindrical spark-over chamber and a pair of cylindrical spark blow-out chambers located respectively to each side of the spark-over chamber and connected thereto by slits. A central electrode extends into the three chambers and each spark blow-out chamber is provided with a concentric ring electrode connected respectively to one of the members in the spark-over chamber between which the arc is initially struck. The arc expanding under the action of the force produced by a magnetic field reaches the central electrode in the form of two partial arcs each which is then directed through one of the slits into the corresponding spark blow-out chamber and there further given a combined rotational and expanding movement with one root of the arc terminating on the central electrode and the other root on the ring electrode.

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