US 12,481,195 B2
Structure with color-changing housing
Swapnil Suresh Rathod, Milwaukee, WI (US); Kyle C. Fassbender, Brookfield, WI (US); Matthew R. Polakowski, Greenfield, WI (US); James P. Elfering, Antioch, IL (US); Michael A. Barrowclift, East Troy, WI (US); Maria Krutikova, Wauwatosa, WI (US); and Max Karbin, Milwaukee, WI (US)
Assigned to Milwaukee Electric Tool Corporation, Brookfield, WI (US)
Filed by MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed on Oct. 8, 2021, as Appl. No. 17/497,424.
Claims priority of provisional application 63/089,743, filed on Oct. 9, 2020.
Prior Publication US 2022/0113605 A1, Apr. 14, 2022
Int. Cl. G02F 1/1685 (2019.01)
CPC G02F 1/1685 (2019.01) 16 Claims
OG exemplary drawing
 
1. An electrical device capable of emitting or absorbing energy relative a surrounding environment, the electrical device comprising:
including
a housing having at least one surface exposed to the surrounding environment;
an interior volume defined in the housing;
one or more cells at least partially positioned within the interior volume;
an energy sensor at least partially exposed to the surrounding environment;
a first material having a first absorptivity; and
a second material having a second absorptivity lower than the first absorptivity, wherein
at an energy sensor reading below a threshold energy range, the first material is nearer to the surrounding environment than the second material is,
at an energy sensor reading above the threshold energy range, the first material is farther from the surrounding environment than the second material is, and
an amount of heat energy retained by the one or more cells increases with the first material nearer to the surrounding environment than the second material is.