Class 218/99 - With venting means

Subclass of Class 218 - High-voltage switches with arc preventing or extinguishing devices
Definition: Subject matter including means to release excess pressure
No. of patents: 4
Last issue date: 02/11/1986

Number	Title	Issue Date
4570043	Dielectric fluids and apparatus incorporating such fluids Dielectric, cooling or arc-extinguishing fluids comprise a mixture of tetrachlorodifluoroethane and perchloroethylene, optionally with incorporation of a third component which is preferably trichlorotrifluoroethane. Transformer and circuit-interrupter app...	02/11/1986
4514607	Electrical circuit interrupting devices An electrical circuit interrupting device such as a circuit breaker or switch has openable contacts immersed in a first relatively dense liquid, such as a perfluorocarbon, constituting an arc interruption medium and has a second less dense non-flammable d...	04/30/1985
4401871	Halogenated hydrocarbon compositions and electrical apparatus containing such compositions A liquid halogenated hydrogenated hydrocarbon composition suitable for use as a dielectric and/or arc-extinguishing fluid in electrical apparatus, which comprises (a) a major proportion by weight of one or more halogenated paraffinic hydrocarbons having a...	08/30/1983
4357508	High-voltage circuit breaker Disclosed is a multipole high-voltage circuit breaker of the type comprising a housing into which two stationary contacts per pole extend and a rotatable current bridge which connects and disconnects the stationary contacts upon rotation thereof. Both the...	11/02/1982

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