Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Automatic circuit-interrupting devices
Reexamination Certificate
2008-04-01
2008-04-01
Barrera, Ramon M. (Department: 2832)
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Automatic circuit-interrupting devices
C335S010000, C335S011000, C335S021000, C335S022000, C335S038000, C335S173000, C335S174000, C361S114000
Reexamination Certificate
active
11304828
ABSTRACT:
A manual trip control method and arrangement is provided to manually trip a plurality of circuit interrupters. Specifically, where the circuit interrupters include magnetic-actuator-driven vacuum interrupters including permanent magnets that hold the contacts of the circuit interrupter in the closed position via a plunger, a first of the circuit interrupters is manually tripped via movement of the plunger. To operate the remaining circuit interrupters to trip open, the voltage generated in the magnetic actuator of the first circuit interrupter is coupled to the magnetic actuators of the remaining circuit interrupters for tripping thereof.
REFERENCES:
patent: 2752535 (1956-06-01), Fountain
patent: 4754162 (1988-06-01), Kondou et al.
Lettow Christopher R.
Opfer John C.
Barrera Ramon M.
Lapacek James V.
S & C Electric Co.
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