ANTI-SCALD DEVICE WITH SHAPE MEMORY SPRING
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United States of America Patent
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Issued Date -
Jun 15, 2023
app pub date -
Dec 6, 2022
filing date -
Dec 13, 2021
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Abstract
Provided are anti-scald devices and faucet assemblies comprising anti-scald devices. An anti-scald device can include a housing having a cylindrical interior space comprising a first cavity, a second cavity, a mixing chamber, a hot water inlet, and a cold water inlet, a plunger provided within the cylindrical interior space and comprising a cylindrical protrusion portion that separates the first cavity from the second cavity, a counter spring in the first cavity, and a shape memory alloy (SMA) spring in the second cavity, wherein the anti-scald device is in an inactive configuration when the temperature of the mixed water is below a threshold temperature, and when the mixed water reaches or exceeds a threshold temperature and comes in contact with the SMA spring, the SMA spring is configured to expand to reduce or restrict hot water flow such that the anti-scald is in a fully active configuration.
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