Patent ID: 8167123
Filing Date: 2012-05-01
Classification: A47K,B65F

Abstract:
1. A barrel comprising: an external metal cylinder, made of a metal plate, having a cylindrical body without a sealed bottom, and having a through cylinder body with an open top and an open bottom; and an internal curling portion formed annularly onto the top flange of the external metal cylinder; and a curling flange formed annularly onto the flange of the open bottom correspondingly to the internal curling portion; a plastic vessel, made of plastics, said plastic vessel having a longitudinal length shorter than that of the external metal cylinder; the plastic vessel has an inner space with a sealed bottom; a through top flange set onto the top flange of the plastic vessel, and formed securely by the internal curling portion of the external metal cylinder; the top flange of the plastic vessel is sleeved tightly into the external metal cylinder, and can be embedded securely into the internal curling portion on the open top of the external metal cylinder; the sealed bottom of the plastic vessel is extended into the open bottom of the external metal cylinder, and kept with a recessed spacing to the curling flange, while the bottom of the external metal cylinder is exposed.