Class 218/60 - Piston structure

Subclass of Class 218 - High-voltage switches with arc preventing or extinguishing devices
Definition: Subject matter including structural details of a solid or
No. of patents: 42
Last issue date: 10/26/2010

Number	Title	Issue Date
3943314	Motion-multiplying linkage-mechanism for sealed-casing structures An improved motion-multiplying linkage-mechanism is provided for the movable contact structure of a circuit-interrupter, particularly one of the sealed-casing type, enclosing a suitable arc-extinguishing medium, such as a highly efficient arc-extinguishin...	03/09/1976
3939317	Electric compressed-gas circuit breaker An electric compressed-gas circuit breaker is equipped with a blasting device for extinguishing the arc drawn when the breaker opens. The blasting device includes a cylinder member and a piston member as well as energy storage means which, at the start of...	02/17/1976

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