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US 7,443,056 B2Granted
Junction device with logic and expansion capability
OwnerPhilip H. Fisher, Trent P. Fisher +1inventors
InventorsPhilip H. Fisher, Trent P. Fisher, Larry J. Linder
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Abstract
A junction box receives a plurality of input signals. The input signals are combined in accordance with AND logic to provide an output signal when all input signals are present. Multiple junction boxes may be connected to one another to increase the number of input signals that are accepted.
Claims20
A connection device comprising:
- a plurality of input devices adapted to be connected to at least two signal sources;
- an isolation device electrically connected to said input devices;
- an electrical expansion connector having at least two pins with one of said pins connected to said isolation device;
- at least one output device adapted to be connected to an electrical device;
- said output device connected to said other pin of said expansion connector, said output device isolated by said isolation device from said input devices and capable of being switched from a first state to a second state;
- and
- a device removably inserted into said expansion connector that provides an electrical path between said two pins of said expansion connector with said isolation device operable through said electrical path to cause said output device to change from said first state to said second state when there is a signal present at each of said input devices.
4 more elements
Dependencies are inferred from the claim text.