Dispensing valve particularly for viscous products and having a dome-shaped applicator
OwnerRobert H. Laauweinventor
Life of this patent
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Abstract
A dispensing valve, particularly adapted for a squeeze bottle containing a viscous product, has a valve head in the form of a thin flat wafer of small diameter stationarily supported as freely as possible from obstructions, and above it an elastically deflectable diaphragm having a central opening with a periphery that seats on the periphery of the wafer. Internal pressure causes the diaphragm to move slightly from the wafer during a dispensing operation. The diaphragm is dome-shaped and extends upwardly to form an externally ball-like applicator surface.
Claims7
A dispensing valve having a base comprising a circular rim, means for connecting said rim to a squeeze bottle's mouth, a circular wafer, and spokes connecting with and radiating from the wafer's bottom and extending radially to the rim in a plane below said bottom and positioning the wafer on and normal to the rim's axis, said wafer having a small diameter as compared to the rim's diameter and forming an annular space between the wafer and rim;
- and a cap comprising an elastically flexible annular diaphragm having a central portion positioned above said plane, said portion having a central opening with a periphery normally resting on the periphery of said wafer, and said diaphragm having a depending flange connected to said rim, said peripheries having substantially mating conical surfaces;
- wherein the improvement comprises said diaphragm being upwardly dome-shaped so it has an outer applicator surface that is ball-like in appearance.
Dependencies are inferred from the claim text.