Capacitor switch including a bi-directional toggle mechanism...

Electricity: circuit makers and breakers – Contact moved by sudden release of stored energy

Reexamination Certificate

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Reexamination Certificate

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07745753

ABSTRACT:
An electric power switch suitable for use as a capacitor switch that includes a drive unit having a bi-directional toggle mechanism and linearly opposing opening and closing spring latches. The opening and closing spring latches are located on opposing sides of the toggle mechanism, which includes an open-cage spring mechanism with coaxial, nested opening and closing springs operated by a rotating, motor-driven charging cam. To open the circuit interrupter, the opening spring latch is tripped to release the opening spring and thereby remove the capacitor bank from the electric power circuit. To introduce the capacitor bank into the electric power circuit, the motor rotates the charging cam through one complete rotation, which charges the opening and closing springs and trips the closing spring latch to release the closing spring to close the circuit interrupter and thereby introduce the capacitor bank into the electric power circuit.

REFERENCES:
patent: 4049936 (1977-09-01), Frink et al.
patent: 5059753 (1991-10-01), Hamm
patent: 7078643 (2006-07-01), Rostron et al.
patent: 7115828 (2006-10-01), McCord et al.

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