H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/215
H01H 33/66 (2006.01) H01H 33/668 (2006.01)
Patent
CA 1145382
ABSTRACT Vacuum switch including a getter device. A vacuum switch comprising a vacuum tight envelope accommodating in vacuum contacts mounted on current carrying contact rods and capable of movement with respect to each other as well as a getter device, comprising a getter element provided with a getter material which may absorb optionally present gases upon evaporation thereof by the application of heat generated by an induced current, a metal shield arranged between the getter device and the insulated walls of the vacuum switch, said shield functioning as the surface on which the getter material is deposited and being provided with slots prevent- ing the occurrence of eddy currents in the shield and in that the get- ter element emits the getter material by evaporation at a single location only, this location and the location of the slots in the shield are situated with respect to each other in such a manner that the contact rod carrying both the getter device and the shield will keep the getter material from emanating beyond said shield.
340623
Hazemeijer B.v.
Ridout & Maybee Llp
LandOfFree
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