초록 ▼

A tap comprising a tubular body open at one end and closed at the other end by a flexible resilient diaphragm. The diaphragm is connected to a valve element arranged to close a valve seat at said one end of the body. The body of the tap is made of a material of lower permeability than that of the di

A tap comprising a tubular body open at one end and closed at the other end by a flexible resilient diaphragm. The diaphragm is connected to a valve element arranged to close a valve seat at said one end of the body. The body of the tap is made of a material of lower permeability than that of the diaphragm, and the diaphragm is closed to the atmosphere by a cap or a coating. The edge of the valve element is flush with said one end of the body.

대표청구항 ▼

A three part tap for dispensing a commestible liquid such as wine, said tap being connectable to a container for said commestible liquid, said tap comprising a molded tubular tap body open at one end thereof to define a fluid outlet in the form of a valve seat, said valve seat having a generally fru

A three part tap for dispensing a commestible liquid such as wine, said tap being connectable to a container for said commestible liquid, said tap comprising a molded tubular tap body open at one end thereof to define a fluid outlet in the form of a valve seat, said valve seat having a generally frusto-conical cross-sectional configuration, said tubular body being fabricated of a relatively low gas permeability plastic material for reducing oxygen penetration through said body into a container connected with said tap, said low permeability tending to reduce contamination and decay of a commestible liquid stored in that container to which said tap is connected, a flexible resilient diaphragm connected to the other end of said body, said body being closed at said other end by said diaphragm, and said diaphragm being fabricated of a relatively high gas permeability material relative to said low gas permeability material in order to provide finger pressure flexibility to said diaphragm, said diaphragm constituting a first part, a tubular inlet molded integral with a wall of said body between said diaphragm end and said outlet end, said section being connectable to said container for connecting said tap to said container, and said section defining a fluid inlet to said body from said container when connected with said container, said body and said section constituting a second part, and a valve element connected by a shank to said diaphragm, said valve element constituting a third part and having a frusto-conical configuration adapted to close said valve seat, finger pressure on said diaphragm allowing the normal resilience of said diaphragm to retain said valve element against said valve seat for closing said tap, the configuration of said valve seat and valve element cooperating so that said valve element self-centers against said valve seat to close said tap in dripless fashion time after time when no finger pressure is exerted on said diaphragm, and said body\s outlet and said valve element being structured so that the external edge surface of said valve element extends beyond said body\s one end when said tap is open, and retracts back and is substantially flush with said body\s one end when said tap is closed, said substantially flush closure position eliminating any external dead space between said valve element and said outlet in which said commestible liquid could be retained by virtue of the surface tension of said liquid, thereby eliminating the accumulation of potentially contaminated or decayed commestible liquid that may adhere to the exterior surface of said body at said outlet after one or more uses of said tap.