# US 11,078,681 B1 · Low profile circular drain with water stop for swimming pool and diverter for use therein

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- Number: US 11,078,681 B1
- Document ID: US11078681B1
- Status: Granted
- Kind: B1
- Application number: 17/146,692
- Filed: 2021-01-12
- Granted: 2021-08-03
- Earliest claimed: 2012-06-15
- Assignees: Aquastar Pool Products, Inc.
- Applicants: AquaStar Pool Products, Inc.
- Inventors: Olaf Mjelde
- Web page: https://patentgrep.com/patent/US11078681B1

## CPC

- E04H 4/1236: {Bottom drains}
- Y10T 29/49826: Assembling or joining
- E04H: BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL (foundations E02D)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A sump drain for installation in a surface of a swimming pool or spa, the sump drain comprising an annular chamber having a contiguous annular top opening formed by an inner side wall, an outer side wall and a bottom surface, a plurality of outlet ports, an inner and an outer water stop, a plurality of diverter plates configured to removeably couple to the inner and outer side walls of the annular chamber, each diverter plate comprising two opposed straight ends, a bottom surface having a plurality of louvers, and a pair of side walls extending from opposed sides of the bottom surface, wherein one diverter plate is placed over each outlet port, and a grid cover configured to removeably couple to the annular top opening of the chamber, the grid cover having a multiplicity of openings.

## Claims

### Claim 1

A sump drain for installation in a surface of a swimming pool or spa having a drain inlet, the sump drain comprising:
a) an annular chamber having a contiguous annular top opening formed by an inner side wall, an outer side wall and a bottom surface;
b) a plurality of outlet ports spaced along the bottom surface of the chamber;
c) an inner water stop and an outer water stop, the inner water stop coupled to an exterior surface of the inner wall of the chamber and the outer water stop coupled to an exterior surface of the outer wall of the chamber, the water stops configured to collect water seeping into cracks between the drain and plaster when the drain is installed,
d) a plurality of diverter plates configured to removeably couple to the inner and outer side walls of the annular chamber, wherein each diverter plate is curved along its length and has:
i) two opposed straight ends;
ii) a bottom surface having a plurality of louvers; and
iii) a pair of side walls extending from opposed sides of the bottom surface;
wherein one diverter plate is placed over each outlet port; and
e) a grid cover configured to removeably couple to the annular top opening of the chamber, the grid cover having a multiplicity of openings.

### Claim 2 (depends on 1)

The sump drain of claim 1 wherein the plurality of outlet ports extend downward from the bottom surface of the annular chamber.

### Claim 3 (depends on 1)

The sump drain of claim 1, further comprising a central opening in the bottom surface of the diverter plate.

### Claim 4 (depends on 3)

The sump drain of claim 3, wherein the central opening is in the shape of a cross.

### Claim 5 (depends on 1)

The sump drain of claim 1, further comprising two fasteners for coupling the diverter plate to the annular chamber.

### Claim 6 (depends on 1)

The sump drain of claim 1, wherein each water stop has:
a) a bottom surface that is angled slightly inward from top to bottom, with bottom being proximate the drain; and
b) a slightly angled side wall wherein a bottom of the side wall is proximate the drain and a top of the side wall is distal the drain.

### Claim 7

A diverter plate for installation in a circular sump drain above an outlet port, the diverter plate being curved along its length and comprising:
a) two opposed ends;
b) a bottom surface having a plurality of louvers; and
c) a pair of side walls extending from opposed sides of the bottom surface.

### Claim 8 (depends on 7)

The diverter plate of claim 7, further comprising a central opening in the bottom surface of the diverter plate.

### Claim 9 (depends on 8)

The diverter plate of claim 8, wherein the central opening is in the shape of a cross.

### Claim 10 (depends on 7)

The diverter plate of claim 7, further comprising two fasteners for coupling the diverter plate to a sump drain.

### Claim 11

A sump drain for installation in a surface of a swimming pool or spa having a drain inlet, the sump drain comprising:
a) an annular chamber having a contiguous annular top opening formed by an inner side wall, an outer side wall and a bottom surface;
b) at least one outlet port along the bottom surface of the chamber;
c) at least one diverter plate configured to removeably couple to the inner and outer side walls of the annular chamber, wherein the diverter plate is curved along its length and has:
i) two opposed ends;
ii) a bottom surface having a plurality of louvers; and
iii) a pair of side walls extending from opposed sides of the bottom surface;
wherein the diverter plate is placed over the outlet port; and
d) a grid cover configured to removeably couple to the annular top opening of the chamber, the grid cover having a multiplicity of openings.

### Claim 12 (depends on 11)

The sump drain of claim 11, further comprising an inner water stop and an outer water stop, the inner water stop coupled to an exterior surface of the inner wall of the chamber and the outer water stop coupled to an exterior surface of the outer wall of the chamber, the water stops configured to collect water seeping into cracks between the drain and plaster when the drain is installed.

### Claim 13 (depends on 11)

The sump drain of claim 11, wherein the drain comprises a plurality of outlet ports and a plurality of diverter plates.

### Claim 14 (depends on 11)

The sump drain of claim 11, further comprising two fasteners for coupling the diverter plate to the annular chamber.