Patent ID: 8464885

Claim:
An inside stay for an inside stay berm unit comprising an outer stay layer 18 having a male end portion 20 adjacent a propping leg portion 22 adjacent a base leg portion 30 adjacent a sidewall leg portion 32 adjacent a female end portion 34 ; said propping leg portion 22 having a generally u-shaped propping leg portion slot 26 aligned along said propping leg portion 22 with the legs of said propping leg portion slot 26 aligned towards said male end portion 20 and the bottom of said propping leg portion slot 26 closer towards said base leg portion 30 ; said propping leg portion slot 26 defining an outer stay layer prop flap 28 between the legs of said propping leg portion slot 26 and defining an initial propping leg window 65 ; said propping leg portion 22 underlaying in facing opposing relationship an intermediate propping leg stay layer 40 and secured by a joining means to said propping leg stay layer 40 , said propping leg stay layer 40 having a prop flap portion 42 sized to overlay in facing opposing cooperating relationship said outer stay layer prop flap 28 ; said prop flap portion 42 having a propping leg registration window 44 centrally located; an intermediate stay layer 46 overlaying in facing opposing relationship and secured by said joining means to said sidewall leg portion 32 , said base leg portion 30 , and said propping leg portion 22 ; said intermediate stay layer 46 bridging across and blocking over the end of said initial propping leg window 65 away from said male end portion 20 defining a shorter final propping leg window 67 ; said intermediate stay layer 46 having a base leg registration window 48 centrally located over said base leg portion 30 and a sidewall leg registration window 50 centrally located over said sidewall leg portion 32 ; a propping leg reinforcing member 52 registered in said propping leg registration window 44 ; a base leg reinforcing member 54 registered in said base leg registration window 48 ; a sidewall leg reinforcing member 56 registered in said sidewall leg registration window 50 ; an inner stay layer 60 having an inner stay layer u-shaped slot 62 sized and located to overlay said propping leg portion slot 26 and defining an inner stay layer flap 64 between the legs of said inner stay layer u-shaped slot 62 , said inner stay layer 60 overlaying in facing opposing relationship said intermediate propping leg stay layer 40 and said intermediate stay layer 46 and overlaying said reinforcing members and secured by said joining means to said intermediate propping leg stay layer 40 and said intermediate stay layer 46 , and a closure means for securing said male end portion to said female end portion.