초록 ▼

A dispenser for controlling the dispensing of a liquid from a container, such as a bottle having an opening through which liquid may be poured, is provided in combination with a bladder insertable within the container and expansible incident to dispensing of liquid for occupying a volume correspondi

A dispenser for controlling the dispensing of a liquid from a container, such as a bottle having an opening through which liquid may be poured, is provided in combination with a bladder insertable within the container and expansible incident to dispensing of liquid for occupying a volume corresponding to that of the dispensed liquid in order to prevent air contamination of any liquid remaining in the container. An improved bladder construction and method of forming same is disclosed.

대표청구항 ▼

A dispenser for controlling the dispensing of a liquid from a container having an opening through which liquid may be poured and preventing air contamination of liquid remaining within said container, said dispenser comprising: stopper means removably attachable to said container for creating a flui

A dispenser for controlling the dispensing of a liquid from a container having an opening through which liquid may be poured and preventing air contamination of liquid remaining within said container, said dispenser comprising: stopper means removably attachable to said container for creating a fluid seal about said opening, said stopper means having first and second passageways extending therethrough, said first passageway having an inlet end arranged to be positioned exteriorly of said container for communication with a source of fluid and an outlet end arranged to be positioned interiorly of said container for communication with the interior thereof, said second passageway having an inlet end arranged to be positioned interiorly of said container for flow communication with said interior thereof and an outlet end arranged to be positioned exteriorly of said container for communication with the atmosphere; a fluid impermeable bladder having the interior thereof attachable to said outlet end of said first passageway and capable of expanding to a volume at least essentially corresponding to the volume of said interior of said container; a liquid pour control valve operable to permit pouring of liquid from said container through said outlet end of said second passageway when said container is placed in an inverted condition; a fluid flow control valve operable to permit flow of fluid from said source of fluid to said interior of said bladder to permit expansion of said bladder to occupy a volume of said interior of said container corresponding to a volume of fluid poured therefrom; and a check valve arranged in said second passageway adjacent said inlet end for blocking flow communication between said inlet and outlet ends of said second passageway when said container is placed in an upright condition, said liquid pour and fluid flow control valves each include a valve seat, a valve member and spring means for biasing said valve member into seated, fluid sealing engagement with said valve seat, and said control valves include a common manually operable means for simultaneously unseating the valve members thereof; and said stopper means includes gravity operated latch means operable when said container is in an upright condition for preventing operation of said manually operable means to unseat said valve members.