US 5,341,523 AGranted

Anti-vortex drain

AssigneeCaretaker Systems, Inc.

InventorSteven R. Barnes

Life of this patent

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Abstract

An anti-vortex, flush-mounted floor drain for swimming pools consists of a main housing, which is in the form of a hollow cylinder of a first predetermined diameter A drain opening is located in the top of the hollow cylinder; and the edges of the top of the cylinder are mounted flush with the floor of the swimming pool. A downwardly sloped lip extends from the top edge of the main housing and terminates in a circular opening in the top of the main housing. A solid circular cover is centrally mounted in this opening in the main housing, and is movable toward and away from the opening in the main housing to vary the size of the water inlet from the pool between the edge of the circular cover and the edge of the opening in the main housing. A drain pipe is connected to the main housing for withdrawing water from the housing. The large circular cover at the center of the drain prevents a vortex from occuring as a result of the suction of water passing outwardly through the drain pipe in the drain housing.

Claims12

Dependent claims

An improved drain for a floor surface of a pool including in combination:

a main cylindrical housing with a first predetermined diameter, a top and a bottom and having a cylindrical side wall terminating in an upper peripheral edge, a top flange depending from said upper peripheral edge and extending radially inwardly and downwardly from said side wall to define a circular opening of a second predetermined diameter wherein said top flange has an upper surface surrounding said opening, the top of said housing further adapted for mounting said upper peripheral edge flush with the surface of the floor of a pool;
a solid circular cover member having a peripheral edge and a lower surface and mounted in, and spaced above, said opening such that said lower surface partially overlaps said upper surface;
means operatively connected between said cover and said housing for maintaining said cover and said upper surface in a spaced apart relationship thereby causing water flow from said pool into said housing to take place between the edge of said cover member and an edge of said opening;
and
means for removing water from said main housing.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/030,903Filed 15 Mar 1993
Granted: 30 Aug 1994
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

E04H 4/1236
Treatment of water for swimming pools: bottom drains
E03F 5/0407
Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps: floor drains for indoor use
E04H 4/12
Swimming or splash baths or pools: devices or arrangements for circulating water , i.e. devices for removal of polluted water, cleaning baths or…
E03F 2005/0413
With means for adjusting their position with respect to the surrounding surface: for height adjustment

Family

No related US applications are recorded in the indexed filing history.

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