Dispensing closure mechanism for resiliently squeezable receptacles

Claim 1

In combination with an elongate receptacle for liquid type fluids and that comprises manually resiliently squeezable deflectable wall means surrounding a longitudinally extending central-axis and comprises as two longitudinally separated terminii a leadward open-neck surrounding and a trailward closed bottom-wall intersecting said central-axis, said receptacle deflectable wall means between said terminii being provided with visual indicator means to indicate where manual pressure is to be correctly exerted for causing fluid delivery past the leadward open-neck, a dispensing closure mechanism for the receptacle open-neck and comprising: (A) a cp means provided with a leadward outlet-opening for fluid delivery and further provided with a trailward annular cap-skirt secured to the receptacle open-neck, and said cap means trailwardly of the outlet-opening being internally provided with an interior annular boss surrounding said central-axis; (B) an elongate spindle extending parallel said central-axis, said spindle length including: i. a lead-end located trailwardly of the cap means outlet-opening, ii. a leadward-length located trailwardly of said lead-end and being surrounded by the receptacle open-neck and the cap means cap-skirt, and iii. a trailward-length located trailwardly of said leadward-length and terminating at a spindle trail-end within said receptacle, said trailward-length being provided with a circumferential discontinuity type fulcrum; (C) clampably mounted within said cap means at the internal annular boss thereof, a centrally-open gasket surrounding said central-axis, said gasket in directions normal to said central-axis being resiliently stretchable, and said gasket constrictable surrounding the spindle nearer to the lead-end thereof than to the discontinuity type fulcrum; D. an adapter separable from but having a longitudinally arrested relationship to said cap means, said adapter surrounding the central-axis and the spindle, said adapter including a medial flange portion extending in sealing relationship between the cap means and the receptacle open-neck, said adapter including a tubular leadward-skirt securely removably engaged by the cap means and bearing against the trailward side of said centrally-open gasket and in surrounding relationship to the gasket central-opening, and said adapter including a fluid-pervious reticulated trailward-skirt surrounding and being pivotably secured to the spindle circumferential discontinuity type fulcrum; and E. a rim type shoulder surrounding and attached to the spindle trailwardly of the circumferential discontinuity type fulcrum and being co-longitudinal with the receptacle visual indicator means, whereby maintenance of manual pressure against the visually indicated wall means contacts the rim type shoulder causing it and the spindle to pivot at said fulcrum and resiliently stretch the gasket central-opening to permit fluid delivery therethrough and thence ultimately through the cap means outlet-opening.