Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Reexamination Certificate
2005-08-23
2005-08-23
DeBeradinis, Robert L. (Department: 2836)
Electrical transmission or interconnection systems
Plural supply circuits or sources
Substitute or emergency source
C307S066000, C363S086000
Reexamination Certificate
active
06933626
ABSTRACT:
Uninterruptible Power Supply (UPS) systems and methods for a communications signal distribution system, such as a cable television (CATV) signal distribution system that distributes a communication signal and an Alternating Current (AC) power over a coaxial cable having a conductor and a sheath, include an input neutral line and an input voltage line. A first circuit is configured to convert an input voltage between the input neutral line and the input voltage line into first and second complementary Direct Current (DC) voltages. A second circuit is configured to convert the first and second complementary DC voltages into an AC voltage between an output neutral line and an output voltage line, and to connect the output neutral line to a coaxial cable sheath and the output voltage line to a coaxial cable conductor. The first and second circuits are configured to connect the input neutral line to the output neutral line without an intervening transformer winding.
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Alphatec Ltd.
DeBeradinis Robert L.
Schacht Michael R.
Schacht Law Office Inc.
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