US 4,193,519 AGranted

Liquid dispensing closure having capillary bores

OwnerWerner F. Dubach, Hansruedi Kesslerinventors

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Abstract

A body and cap connected by a hinge are integrally molded from plastic. The body is adapted to be connected to a container and has a dispensing spout which may be centered or offset. At the distal end of the spout is a tubular portion surrounded by a channel. Capillary bores extend generally parallel to the axis of the spout from the base of the channel to an interior in the spout. Adjacent the distal end of the spout is a spherical bulge. The cap has an internal opening complementary to this bulge so that the cap fits sealingly thereabout. The body and cap have annular exterior walls which meet in a plane inclined at about fifteen degrees to the horizontal (when the top of the container to which the body is secured is horizontal). Several forms of hinges and components biasing the cap are disclosed.

Claims18

Dependent claims

A plastic closure for a liquid holding container comprising a body and cap, said body being adapted to be secured to the container and including a tip having an outlet bore therethrough, the bore having an inner end and an outer end, said closure being characterized by:

said tip including a tubular part surrounded by an annular bulge, said part and bulge defining an annular channel therebetween adjacent the distal end of the tip, said bore extending through said part and including a central opening intermediate said ends, said bore decreasing in size from said inner end to said outer end whereby as liquid is expelled from the container and flows out through the bore the flow velocity is increased from the inner end to the outer end, said tip including capillary bores extending from said channel to said central opening through which air flows inwardly as the liquid is so expelled and is expelled along with the liquid;
and
said cap having a member adapted to fit about said tip and engage said bulge.

Dependencies are inferred from the claim text.