High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Magnetic blowout
Reexamination Certificate
2007-03-06
2007-03-06
Enad, Elvin (Department: 2832)
High-voltage switches with arc preventing or extinguishing devic
Arc preventing or extinguishing devices
Magnetic blowout
C218S015000, C218S149000
Reexamination Certificate
active
11252604
ABSTRACT:
An arc extinguisher assembly is provided for a mould cased circuit breaker capable of reducing time for arc extinguishing and preventing contacts from being damaged due to a back flow of an arc. To this end, the arc extinguisher assembly for a mould cased circuit breaker provided with a fixed contactor and a movable contactor in the case, includes a plurality of grids made of a ferro magnetic material, each having a recess portion for allowing a movement of the movable contactor, laminated to surround contacts of the movable contactor and the fixed contactor and installed in the case, for dividing an arc when the arc is generated between the fixed contactor and the movable contactor, and a grid support plate including outer wall portions supporting the grids and inner wall portions provided adjacent to contacts of the movable contactor and the fixed contactor and compressing an arc to be narrow, the grid support plate being installed to have a U-shaped horizontal section with an aperture facing the opposite side of the contacts.
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patent: 10-2004-0038886 (2004-05-01), None
English Langue abstract of JP 9-171761.
English Langue abstract of KOREAN 10-2004-0038886.
Enad Elvin
Fishman M.
Greenblum & Bernstein P.L.C.
LS Industrial Systems Co., Ltd.
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