EP 0070469 A3 19841017 - VACUUM SWITCH
Title (en)
VACUUM SWITCH
Publication
Application
Priority
DE 3129020 A 19810722
Abstract (en)
[origin: US4424427A] A vacuum switch of the type having contact electrodes which are coaxially movable with respect to each other for interrupting large currents. In one embodiment where a substantially cylindrical housing is arranged around the contacts, a radially inward bulge of metallic material is arranged near a center plane intermediate of the contacts. Such a bulge may be formed by inserting a metallic, annular insert within the housing, or producing an annular bulge in the housing itself. The bulge produces an inclination which is selected so that a plasma which flows from the arc which is produced upon interruption of the current is deflected in the axial direction. Such deflection reduces the stress on the vapor shield and is particularly advantageous with single-pulse switches which experience relatively long arcing times.
IPC 1-7
IPC 8 full level
H01H 33/66 (2006.01); H01H 33/662 (2006.01)
CPC (source: EP US)
H01H 33/66261 (2013.01 - EP US); H01H 2033/66276 (2013.01 - EP US); H01H 2033/66284 (2013.01 - EP US)
Citation (search report)
- [X] DE 3130641 A1 19830217 - SIEMENS AG [DE]
- [A] GB 1047706 A 19661109 - GEN ELECTRIC CO LTD
- [A] CH 449742 A 19680115 - JENNINGS RADIO MANUFACTURING C [US]
Designated contracting state (EPC)
CH GB IT LI
DOCDB simple family (publication)
EP 0070469 A2 19830126; EP 0070469 A3 19841017; DE 3129020 A1 19830210; JP S5826423 A 19830216; US 4424427 A 19840103
DOCDB simple family (application)
EP 82106137 A 19820708; DE 3129020 A 19810722; JP 12663882 A 19820720; US 39638482 A 19820708