초록 ▼

A filter-separator pour-out cap for attachment to the neck opening of a container to separate particulate material from a liquidic suspension in the container when the container is tipped to pour out its contents. The cap comprises a filter-separator section having an upstream face at which flow fro

A filter-separator pour-out cap for attachment to the neck opening of a container to separate particulate material from a liquidic suspension in the container when the container is tipped to pour out its contents. The cap comprises a filter-separator section having an upstream face at which flow from the container enters and a downstream face at which flow exits. This section comprises successive elements that are spaced axially apart from each other and are constructed and arranged to present at the upstream face juxtaposed uniformally spaced apart edges that define the entrances of openings that pass through the filter-separator from the upstream face to the downstream face. These elements have, in transverse cross section, a taper which narrows in the direction from the upstream face to the downstream face so that the openings are of progressively increasing taper in the same direction. In one embodiment of the invention these elements are identical circular rings. In another, the elements are convolutions of a helix. Various embodiments of caps are disclosed.

대표청구항 ▼

A filter-separator pour-out cap for a container comprising an attachment section for attaching the cap to a container, a filter-separator section, and means for supporting said filter-separator section on a container via said attachment section, said filter-separator section having an upstream face

A filter-separator pour-out cap for a container comprising an attachment section for attaching the cap to a container, a filter-separator section, and means for supporting said filter-separator section on a container via said attachment section, said filter-separator section having an upstream face at which flow from the container enters the filter-separator section and a downstream face at which flow exits the filter-separator section, said filter-separator section comprising successive elements that are spaced axially apart from each other and are constructed and arranged to present at the upstream face of the filter-separator section juxtaposed uniformly spaced apart sharp edges that define the entrances of openings that pass through the filter-separator section from the upstream face to the downstream face, the spacing distance between immediately consecutive elements being such that substantially identical spacing distances are provided between juxtaposed edges of immediately consecutive elements at the upstream face and the spacing distance between immediately consecutive elements along said openings from just beyond said juxtaposed edges to the downstream face exceeds the spacing distance that exists between the juxtaposed edges of immediately consecutive elements at the upstream face.