Self-closing funnel
AssigneeAB Kompositprodukter S.K.-F.M.
InventorMats Lindgren
Life of this patent
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Abstract
A self-closing funnel includes a downwardly narrowing flow-receiving part 1, a tubular spout 2 extending from the receiving part, and a float 5 which is movable within the spout. The funnel further includes a float-control valve 11, 12 and a permanent magnet 10 which influences the closing movement of the valve. The funnel includes a spring 9 which in the active state of the float counterbalances an essential part of its intrinsic weight, and a constriction 11 provided upstream of the float is configured so that the flow area 8 through the construction is smaller than the flow area between the spout and the float.
Claims10
A self-closing funnel for filling fluids into a container, comprising:
- a downwardly narrowing flow-receiving part (1), a tubular spout (2) extending from said flow-receiving part, a float (5) movable within the spout in response to fluid therein, at least one throughflow chamber (13) defined by the space between the float and the spout, valve means (11, 12), in said spout responsive to movement of said float for preventing flow through said spout when a predetermined fluid level is reached a permanent magnet (10) in said funnel for influencing closing of said valve means and a spring (9) retained within said flow receiving part counterbalancing for the intrinsic weight of the float to render the flat more responsive;
- wherein the funnel further includes a liquid flow constriction disposed upstream of the float and dimensioned such that the flow area for passage of liquid through the constriction is smaller than a smallest fluid flow area downstream of the constriction.
Dependencies are inferred from the claim text.