This invention describes a system to prevent water pipes from freezing. It works by using a temperature sensor to detect if the temperature at a pipe location drops too low. If it does, the system automatically sends a signal to a special valve to shut off the water flow and drain the water from that pipe, which stops it from freezing and potentially bursting.
Why it matters: Filed before widespread IoT and smart home integration. The control system, requiring dedicated hardware in 2006, is now easily implemented with affordable, connected smart home components.
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