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Class 218/108 - Movable


Subclass of Class 218 - High-voltage switches with arc preventing or extinguishing devices
Definition: Subject matter including a conducting member which supports
No. of patents: 1
Last issue date: 07/05/1977


NumberTitleIssue Date
4034175Protracted-blast electric circuit-breaker for alternating currents
An electric circuit-breaker in which the arc extinction chamber is filled with liquefield SF6 under pressure. The moving contact of the circuit-breaker cooperates with a blast-piston which, during opening of the breaker and after the moving contact has re... 		07/05/1977
 
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