EP 0167479 B1 19890906 - VACUUM SWITCH TUBE WITH A COIL FOR GENERATING A MAGNETIC FIELD
Title (en)
VACUUM SWITCH TUBE WITH A COIL FOR GENERATING A MAGNETIC FIELD
Publication
Application
Priority
DE 3422949 A 19840619
Abstract (en)
[origin: US4618750A] A vacuum switching tube comprises a stationary contact and a movable contact and a two section coil for generating a magnetic field between the contacts. A first coil section is associated with the stationary contact and generates, together with the movable contact designed as the other coil section, an axial magnetic field which permeates the space between the contacts. Since the predominant part of the magnetic field is generated by the stationary coil, the movable contact can be designed with relatively little mass and loss. The apparatus is suitable for vacuum switching tubes which control equally well large switching currents and large rated currents with a small temperature rise and little drive energy.
IPC 1-7
IPC 8 full level
H01H 33/66 (2006.01); H01H 33/664 (2006.01)
CPC (source: EP US)
H01H 33/6645 (2013.01 - EP US); H01H 33/6643 (2013.01 - EP US)
Citation (examination)
EP 0073925 A1 19830316 - SIEMENS AG [DE]
Designated contracting state (EPC)
CH DE FR GB LI
DOCDB simple family (publication)
EP 0167479 A1 19860108; EP 0167479 B1 19890906; DE 3422949 A1 19851219; DE 3572887 D1 19891012; JP H0244094 B2 19901002; JP S6113518 A 19860121; US 4618750 A 19861021
DOCDB simple family (application)
EP 85730081 A 19850611; DE 3422949 A 19840619; DE 3572887 T 19850611; JP 13161485 A 19850617; US 74369785 A 19850611