초록 ▼

This liquid container and dispenser includes a rigid or semi-rigid housing 3, a charging and discharging opening defined by a mouth 3a of the housing for permitting the passage of liquid content into or out of the container, a flexible and open-ended bag 2 suspended from the housing opening, and val

This liquid container and dispenser includes a rigid or semi-rigid housing 3, a charging and discharging opening defined by a mouth 3a of the housing for permitting the passage of liquid content into or out of the container, a flexible and open-ended bag 2 suspended from the housing opening, and valve structure 4, 5,5a, 6 for controlling the charging and discharging of the liquid content of the bag 2 via the opening. The bag 2 is made of an elastomeric material and is of sufficient wall strength to expand without rupture within the confines of the housing 3 from a relaxed contracted state 2a upon charging of the bag with liquid, and is returnable to its contracted state by its own inherent resilience in order to discharge its liquid content. To facilitate the contraction of the flexible bag 2, a pressure control valve 8 communicates with the internal space 3b defined between the exterior of the bag 2 and the internal wall of the housing 3, the control valve 8 being operable to allow ingress of ambient air to the internal space 3b as the bag 2 contracts during liquid discharge.

대표청구항 ▼

A liquid container which comprises: (a) a housing; (b) a charging and discharging opening provided on the housing for the liquid content of the container; (c) a flexible and open-ended bag arranged in the housing to communicate with said housing opening and defining an internal space within the cont

A liquid container which comprises: (a) a housing; (b) a charging and discharging opening provided on the housing for the liquid content of the container; (c) a flexible and open-ended bag arranged in the housing to communicate with said housing opening and defining an internal space within the container between the exterior of the bag and an internal wall of the housing; and, (i) the bag being made of an elastomeric material and being of sufficient wall strength: to expand without rupture within the confines of the housing from a relaxed contracted state upon charging of the bag with liquid, and be returnable to its contracted state by its own inherent resilience in order to discharge its liquid content; (d) valve means for controlling the charging and discharging of the liquid content of the bag via said opening; and, (e) a pressure control valve communicating with the internal space defined between the exterior of the bag and the internal wall of the housing, said control valve allowing ingress of ambient air to the internal space as the bag contracts during liquid discharge, said control valve comprising an outer body having a restricted outlet for flow of air therethrough to atmosphere, a valve element positioned within said outer body immediately adjacent said restricted outlet, and spring means positioned in engagement with said valve element remote from said restricted opening and resiliently urging said valve element outwardly into sealing relation to said restricted opening whereby upon a predetermined negative pressure being created in the internal space defined between the exterior of the bag and the internal wall of the housing as the bag contracts during liquid discharge, said valve element will be moved to a non sealing position by atmospheric pressure thereon overriding said spring means.