Patent ID: 6796514
Filing Date: 2004-09-28
Classification: B05B

Abstract:
A material supply assembly for use with a spraying device, the material supply assembly comprising:a housing of stiff material comprising a side wall having a top end, said side wall having an inner surface defining a recess in said housing, and said top end of said side wall defining an opening into said recess; a pre-filled container comprising a stiff annular lip adapted to be positioned along the top end of said side wall, a flexible portion fixed to the annular lip and adapted to extend into the cavity in the housing when the annular lip is positioned along the top end of the side wall, said flexible portion having an inner surface defining a cavity in said flexible portion opening through the annular lip, a quantity of material within the cavity in the flexible portion, and a polymeric membrane extending across and sealed to said annular lip to retain the material in the cavity; an adapter assembly having a through opening, having at a first end a transverse portion including a peripheral part adapted for engagement with the annular lip positioned on the top end of said container, and having at a second end a portion adapted to engage the inlet port of the material spraying device; means adapted for securing the peripheral part to the housing with the annular lip therebetween, and a piercing structure projecting from said transverse portion having a distal end portion adapted to pierce the membrane as the peripheral part is engaged with the annular lip positioned on the top end of the housing.