Patent ID: 8899452
Filing Date: 2014-12-02
Classification: B65D,B67D,Y10T

Abstract:
1. A plug structure that is adapted to be installed in an inlet of a container, the inlet having an external thread, and that is capable of removing a fluid inside the container by using a siphon hose technique, the plug structure comprising: a plug having a plug body and a siphon hose configured to remove a fluid inside the container, and a socket, wherein the socket comprises: wherein the plug further comprises a plurality of gas supply ducts for supplying gas which is guided from the gas path into the container, the plurality of gas supply ducts being provided in the plug body; and wherein the plurality of the gas supply ducts are disposed at the periphery of an outer wall of the siphon hose, wherein at least one of the plurality of the gas supply ducts is used as a fluid circulation path when the fluid which is inside the container is circulated by returning fluid which has been pushed out from the siphon hose due to gas pressure that has been introduced from the gas path into the container, wherein, when the fluid return path is used for fluid circulation, one end of the fluid return path is communicated with the fluid circulation path which is at least one of the plurality of the gas supply ducts, and the fluid passes through only a closed space, wherein an inner peripheral side wall surface of the gas supply duct is formed by the outer wall of the siphon hose, wherein an inlet of the gas supply duct includes a sloping surface that slopes downward in a direction from an outer periphery toward an inner periphery of the plug body, wherein an inner wall of a fluid outlet which penetrates the inclined surface of the fluid retaining portion is formed by an outer wall of the siphon hose, wherein the fluid retaining portion retains the fluid which is falling from the gas path which is used as the fluid circulation path along the outer wall of the siphon hose and discharges the retained fluid from the fluid outlet downward along the outer wall of the siphon hose, and wherein the fluid retaining portion being provided at approximately a same distance from each of the distal end of the siphon hose and the proximal end of the siphon hose.