Patent ID: 9596961
Date: 2017-03-21
CPC Classifications: A47K,B05D,Y10T

Claim:
1. A wall structure for a composite tub, said structure comprising: at least one side wall extending upwardly from a bottom surface of the composite tub, wherein the at least one side wall comprises at least a surface layer that faces an interior of the composite tub; a structural layer having a first side attached to the surface layer and a second side opposite the first side, and wherein said structural layer comprises a rigid polyurethane foam; plumbing directly attached to the structural layer; and a third layer that encapsulates the plumbing, and wherein the plumbing and the third layer are comprised of a rigid polyurethane foam, and wherein the plumbing comprises a channel positioned between the structural layer and the third layer, and wherein the channel is comprised of a pair of legs attaching to and extending from said structural layer and a third leg attached to each leg of said pair of legs to form the channel.