Container cap

Claim 2

Integral cap structure of synthetic plastic material for a container of the type having a hollow product discharge neck comprising an annular body adapted to be mounted in fixed position on said neck, a closure lid and flexible hinge means between said body and lid, said hinge means comprising a relatively short thick intermediate hinge element extending between thinner adjacently substantially parallel edges of coextensive body and lid portions, said element extending longitudinally only a minor distance along the space between said edges and the effective hinge axis between said body and lid extending through said element substantially parallel to said edges, and parallel flexible hinge loops disposed outwardly of the ends of said space having opposite ends pivotally connected to the body and lid on aligned axes parallel to said effective hinge axis.

Claim 3

Integral cap structure of synthetic plastic material for a container of the type having a hollow product discharge neck comprising an annular body adapted to be mounted in fixed position on said neck, a closure lid and flexible hinge means between said body and lid, said hinge means comprising an intermediate hinge element directly bridging adjacent portions of said body and lid with the effective hinge axis extending longitudinally through said element, parallel flexible hinge loops disposed outwardly of the ends of said element having opposite ends pivotally connected to the body and lid on aligned axes parallel to said effective hinge axis, a finger tab projecting outwardly from said lid opposite said hinge element and having an arcuate outer edge, said outer edge coinciding substantially with an arc on the periphery of a circle having its center on the axis of said annular body and with its periphery intersecting the outer corners of said hinge loops in the closed condition of the cap structure.

Claim 4

Integral cap structure of synthetic plastic material for a container of the type having a hollow product discharge neck comprising an annular body adapted to be mounted in fixed position on said neck, a closure lid and flexible hinge means between said body and lid, said hinge means comprising an intermediate hinge element directly bridging adjacent portions of said body and lid with the effective hinge axis extending longitudinally through said element, parallel flexible hinge loops disposed outwardly of the ends of said element having opposite ends pivotally connected to the body and lid on aligned axes parallel to said effective hinge axis, a finger tab projecting outwardly from said lid opposite said hinge element and having an arcuate outer edge, said outer edge coinciding substantially with an arc on the periphery of a circle having its center on the axis of said annular body and with its periphery intersecting the outer corners of said hinge loops in the closed condition of the cap structure.

Claim 5

Integral cap structure of synthetic plastic material for a container of the type having a hollow product discharge neck comprising an annular body adapted to be mounted in fixed position on aid neck, a closure lid and flexible hinge means between said body and lid, said hinge means comprising an intermediate hinge element directly bridging adjacent portions of said body and lid with the effective hinge axis extending longitudinally through said element, parallel flexible hinge loops disposed outwardly of the ends of said element having opposite ends pivotally connected to the body and lid on aligned axes parallel to said effective hinge axis, said hinge means providing for pivotal movement of said lid between an open position extending away from said body and a closed position wherein it extends over said body, and cooperating frictionally engaged locking means on said body and lid for retaining said closed position.

Claim 6

Integral cap structure of synthetic plastic material for a container of the type having a hollow product discharge neck comprising an annular body adapted to be mounted in fixed position on aid neck, a closure lid and flexible hinge means between said body and lid, said hinge means comprising an intermediate hinge element directly bridging adjacent portions of said body and lid with the effective hinge axis extending longitudinally through said element, parallel flexible hinge loops disposed outwardly of the ends of said element having opposite ends pivotally connected to the body and lid on aligned axes parallel to said effective hinge axis, said hinge means providing for pivotal movement of said lid between an open position extending away from said body and a closed position wherein it extends over said body, and cooperating frictionally engaged locking means on said body and lid for retaining said closed position.

Claim 7

The cap structure defined in claim 3, wherein said body has a discharge orifice in its upper end and said lid has a depending internal tubular projection adapted to slidably extend into said orifice in the closed position of the lid, and said locking means comprises coacting lip and shoulder means engageable at said orifice.

Claim 8

The cap structure defined in claim 3, wherein said body has a circular discharge orifice at its upper end and a downwardly facing shoulder below said orifice, and said lid has a depending internal projection the free end of which is smoothly slidable into said orifice when the lid is closed, and said locking means comprises a lip projecting laterally of said projection end adapted to be forcibly moved through said orifice and to snap under said shoulder

Claim 9

The cap structure defined in claim 5, wherein said lid projection is cylindrical and said lip is a part circular projection eccentric to said lid porjection, the outer edge of said lip merging circumferentially smoothly into the surface of said lip projection.