Circuit breaker magnetic blowout arc extinguishing device with a

Details Circuit breaker magnetic blowout arc extinguishing device with a Circuit breaker magnetic blowout arc extinguishing device with a

1996-04-16

1998-06-23

Scott, J. R.

High-voltage switches with arc preventing or extinguishing devic

Arc preventing or extinguishing devices

Magnetic blowout

218 40, 218148, H01H 3318, H01H 944, H01H 7318

Patent

active

057708274

ABSTRACT:
There is provided an acr extinguishing device of a circuit breaker which closes and opens an electric line, one of two contact parts being fixed to a base part. The arc extinguishing device includes an arc runner formed of an electrically conductive member and arranged on an outer circumference of the above one of the two contact parts. The arc extinguishing device moves, to the arc runner, an arc occurring when a contact made by the two contact parts is opened whereby the arc is extinguished. The arc runner has a cylindrical shape and includes a rising portion formed on an entire inner circumference of the cylindrical shape. A slant angle of the rising portion obtained on a depth side thereof is greater than another slant angle thereof obtained on a front side thereof.

REFERENCES:
patent: 4249051 (1981-02-01), Votta
patent: 4259554 (1981-03-01), Smith et al.
patent: 4410778 (1983-10-01), Weston
patent: 4529853 (1985-07-01), Bouilliez
patent: 4743719 (1988-05-01), Spooner
patent: 4980527 (1990-12-01), Eppinger
patent: 5003138 (1991-03-01), Bolongeat-Mobleu et al.
patent: 5015810 (1991-05-01), Eppinger et al.
patent: 5464956 (1995-11-01), Steele et al.

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