Patent ID: 9638451
Date: 2017-05-02
CPC Classifications: C22C,F25C

Claim:
1. A clad metal ice forming tray assembly for a refrigerator, comprising: a clad metal comprised of at least a first alloy sheet and a second alloy sheet different from the first and having different coefficients of thermal expansion; and an ice recess stamped in the clad metal, defined along its bottom by a bottom surface and its sides by at least one wall extending upwardly from and completely around the bottom surface, wherein the bottom surface and the at least one wall comprise the clad metal; wherein each of the bottom surface and the at least one wall comprises a continuous interior surface which faces the ice recess and a continuous exterior surface which faces away from the ice recess, said ice forming tray assembly further comprising a layer of an organic coating disposed on the interior surface of the ice recess; wherein the continuous interior surface comprises only the first alloy sheet and the exterior continuous surface comprises only the second alloy sheet; said first alloy sheet having a coefficient of thermal expansion between about 6.0×10(−6) in/IN° F. and 12.0×10(−6) in/IN° F. and said second alloy sheet having a coefficient of thermal expansion between about 2.0×10(−6) in/IN° F. and 7.0×10(−6) in/IN° F.