US 12,297,632 B2
Anti-scald device
Xiao Jing Ye, Edison, NJ (US)
Assigned to AS America, Inc., Piscataway, NJ (US)
Filed by AS America, Inc., Piscataway, NJ (US)
Filed on Dec. 6, 2022, as Appl. No. 18/076,156.
Claims priority of provisional application 63/288,923, filed on Dec. 13, 2021.
Prior Publication US 2023/0183954 A1, Jun. 15, 2023
Int. Cl. E03C 1/04 (2006.01); E03C 1/02 (2006.01); F16K 31/00 (2006.01)
CPC E03C 1/041 (2013.01) [F16K 31/002 (2013.01); E03C 2001/026 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An anti-scald device for a faucet assembly, the anti-scald device comprising:
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 of the housing and comprising a shaft portion and a cylindrical protrusion portion, wherein an outer cylindrical surface of the cylindrical protrusion portion is in contact with an interior surface of the housing, and the cylindrical protrusion portion separates the first cavity from the second cavity of the housing;
a spring provided within the first cavity and coiled around the shaft portion of the plunger; and
a wax element provided within the second cavity,
wherein the mixing chamber is configured to receive hot water from the hot water inlet and cold water from the cold water inlet to form mixed water, and the second cavity is configured to receive the mixed water from the mixing chamber, and
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 wax element, the wax element is configured to expand, causing the plunger to move laterally within the housing to compress the spring and reduce or restrict hot water flow into the mixing chamber such that the anti-scald is in a partially active or a fully active configuration.