Arc quenching chamber component structure for circuit breakers o

Details Arc quenching chamber component structure for circuit breakers o Arc quenching chamber component structure for circuit breakers o

1974-02-28

1976-11-30

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200148A, H01H 3360

Patent

active

039951308

ABSTRACT:
A structural component such as nozzle-forming member to be utilized in conjunction with the arc quenching chamber of an electrical circuit breaker operating with a pressurized gaseous fluid such as SF.sub.6 and made from a polytetrafluoroethylene composition that is gas-emissive under influence of heat generated by the arc in the vicinity of the nozzle is provided with a system of gas-conducting passageways to permit such gas to escape from sub-surface cavities formed by deterioration of the composition rather than accumulate therein which leads ultimately to undersirable chipping off of pieces of the surface. These passageways may be constituted by a system of blind holes or by a system of grooves.

REFERENCES:
patent: 3150245 (1964-09-01), Leeds et al.
patent: 3555227 (1971-01-01), Cromer et al.
patent: 3668352 (1972-06-01), Teijeiro
patent: 3670124 (1972-06-01), Teijeiro
patent: 3670125 (1972-06-01), Teijeiro

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