초록 ▼

Dispensing apparatus for a flexible container, including a closure for the container and an expansible bladder associated with the closure and adapted to fit within the container to expand and displace the dispensed contents. The closure has two openings, one at which it is attached to the container

Dispensing apparatus for a flexible container, including a closure for the container and an expansible bladder associated with the closure and adapted to fit within the container to expand and displace the dispensed contents. The closure has two openings, one at which it is attached to the container and the other forming an outlet for dispensing. A conduit extends from the bladder into the closure and communicates to the exterior of the closure and container through one of the two openings. The outlet opening is constructed to allow the contents to flow only in a direction from the container during use and a check valve allows flow through the conduit only into the bladder.

대표청구항 ▼

A member for forming a one-way inlet conduit for a dispenser, comprising a unitary annular support portion constructed to form a seal ring between a closure and a container about an opening of the container, said annular support portion being relatively narrow in the radial direction to provide a la

A member for forming a one-way inlet conduit for a dispenser, comprising a unitary annular support portion constructed to form a seal ring between a closure and a container about an opening of the container, said annular support portion being relatively narrow in the radial direction to provide a large central passageway through the member, and including a circular locating flange inset peripherally, a conduit portion defining an internal passageway within the member and extending from said annular portion inward beyond the annular portion, with an opening at the outer periphery of the annular support portion and at an inner end of the conduit portion located centrally of the annular support portion, and a one-way valve in the conduit portion inwardly of the annular support portion limiting flow through the passageway to a direction inwardly from the opening of the support portion.