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US 8,803,369 B1Granted
Automatic isolation switch for power transfer with emergency isolation control
OwnerWillie Sam Caudillinventor
Life of this patent
Estimating the term…
Abstract
A power system including an improved automatic power transfer device having an emergency isolation control that prevents a common load from at once being powered by a main and auxiliary power source, and eliminates any possibility of back feeding the main power source from the auxiliary power source.
Claims12
A power transfer device comprising:
- a first multiple pole switch comprising:
- at least two pairs of opposing terminals;
- and
- a switch mechanism movable in a first direction to produce an electrical connection between the terminals of each pair;
- a second multiple pole switch comprising:
- at least two pairs of opposing terminals;
- and
- a switch mechanism movable in a second direction substantially opposite the first direction to produce an electrical connection between the terminals of each pair;
- and
- an extension at the switch mechanisms that moves the switch mechanisms in the same direction to open circuits of the first switch, while the circuits of the second switch remain open, followed by closing the circuits of the second switch while the first switch circuit remains open, with a period of time during extension movement that all of the electrical connections are open;
- electrical connections to each switch including a hot line and a ground line;
- and
- an electro-mechanical mechanism to enable movement of the extensions.
10 more elements
An automatic isolation switch for a power transfer device comprising:
- a first switch and a second switch disposed with lateral sides adjacent one another, each switch having pairs of poles transversely opposing the lateral sides sufficient to convey power, neutral and ground as may be required by a power supply and each switch opening or closing for power, neutral and ground;
- a linkage between the first and second switches configured such that one switch may be closed while the other switch remains open;
- an electro-mechanical mechanism having an auger configured to power a pivotal fulcrum for positioning an extension about the switches for moving the switches independently between the open and closed positions.
Dependencies are inferred from the claim text.