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US 10,724,218 B1Granted
Devices and methods for optimizing flow through drains
AssigneeGreen Drain, Inc.
InventorFrank Landon
Life of this patent
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Abstract
A drain insert is described that provides a valve that prevents backflow of objects and materials through the drain inlet and which has an internal wall with a convex curvature. This convex curvature, which can be elliptical, provides improved fluid flow rates relative to straight walled, cylindrical configurations, permitting small diameter drains to utilize the drain insert while meeting IAPMO flow rate requirements.
Claims15
A drain insert comprising:
- an inlet comprising an inlet aperture delimited by an inlet edge;
- an outlet aperture, wherein the inlet aperture and the outlet aperture define a fluid flow path through the drain insert having a length D;
- an interior wall extending from the inlet edge to the outlet aperture and defining a central void;
- and
- a valve positioned within the central void,
- wherein the interior wall extends centrally as a continuously curved convex surface extending from the inlet periphery towards the outlet aperture for at least 80% of D.
3 more elements
A method of increasing fluid flow through a drain, comprising:
- providing a drain insert comprising an inlet comprising an inlet aperture delimited by an inlet edge, an outlet aperture positioned at a distance D from the inlet aperture, an interior wall extending from the inlet edge to the outlet aperture and defining a central void, and a valve positioned within the central void, wherein the interior wall extends centrally as a continuously curved convex surface extending from the inlet periphery towards the outlet aperture for at least 80% of D;
- and
- inserting the drain insert into the drain.
Dependencies are inferred from the claim text.