# US 8,539,618 B2 · Drain cover for sinks

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- Number: US 8,539,618 B2
- Document ID: US8539618B2
- Status: Granted
- Kind: B2
- Application number: 12/843,084
- Filed: 2010-07-26
- Published: 2011-02-03
- Granted: 2013-09-24
- Earliest claimed: 2009-07-30
- Assignees: Masco Canada Limited
- Applicants: Jeffrey John Gibson; Joe Malheiro; Frank A. Stauder
- Inventors: Jeffrey John Gibson; Joe Malheiro; Frank A. Stauder
- Web page: https://patentgrep.com/patent/US8539618B2

## CPC

- A47K 1/14: Stoppers for wash-basins, baths, sinks, or the like
- E03C 1/181: Anti-splash devices in sinks, e.g. splash guards (jet regulators E03C1/08)
- E03C 1/22: Outlet devices mounted in basins, baths, or sinks (stoppers A47K1/14)
- A47K: SANITARY EQUIPMENT; ACCESSORIES THEREFOR, e.g. TOILET ACCESSORIES
- E03C: DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER (not connected to either water-supply main or to waste pipe A47K; devices of the kind used in the ground E03B, E03F); SINKS

## Abstract

An apparatus includes a drain having an opening, the opening having an outboard edge, a cover having an underside having a portion including a downwardly extending curved section and an outer edge, wherein the portion extends a first distance beyond the outboard edge and wherein cover extends a second distance above the drain such that a ratio of the second distance to the first distance is about 1 or less and such that splash and aerosolization from under the cover beyond the cover is minimized.

## Claims

### Claim 1

A drain apparatus for use with a sink, said drain apparatus comprising;
a drain having an opening, said opening having an outboard edge,
a cover covering said drain opening, said cover for extending completely above said sink and having an underside having a portion including a downwardly extending curved section and an outer edge, wherein said portion extends a first distance beyond said outboard edge and wherein said cover extends a second distance above said drain wherein said first distance is greater than or equal to said second distance and such that splash and aerosolization of fluid from under said cover beyond said cover is minimized; said cover having a first nut attaching thereto and extending downwardly therefrom;
a second nut,
a bolt, and
a drain strainer for covering said drain, said drain strainer having an opening and a drain hole wherein said bolt extends through said opening to engage said first nut and to engage said second nut to attach said cover to said drain strainer and wherein said underside and said downwardly extending rim cooperate such that splash from said strainer beyond said cover is minimized.

### Claim 2 (depends on 1)

The drain apparatus of claim 1 wherein said bolt further comprises:
a first threaded portion of larger dimension for engaging said first nut,
a second threaded portion of smaller dimension relative to said larger dimension for engaging said second nut, and
an intermediate portion between said larger portion and said smaller portion for engaging said strainer wherein said if said second nut is tightened said first threaded portion of larger dimension touches said strainer.

### Claim 3 (depends on 2)

The drain apparatus of claim 2 wherein if said first nut is threaded on said first threaded portion of larger dimension said first nut engages said strainer.

### Claim 4

A drain apparatus for use with a sink, said drain apparatus comprising;
a drain having an opening, said opening having an outboard edge,
a cover covering said drain opening, said cover for extending completely above said sink and having an underside having a portion including a downwardly extending curved section and an outer edge, wherein said portion extends a first distance beyond said outboard edge and wherein said cover extends a second distance above said drain wherein said first distance is greater than or equal to said second distance and such that splash and aerosolization of fluid from under said cover beyond said cover is minimized;
a support for disposition within said drain and holding a nut in a central location therein;
a bolt having a first end disposed in and extending through said cover and having a length and a threaded portion at second end thereof, distal from said cover, said bolt further comprising a depth limiter, wherein if said threaded portion is threaded into said nut, said depth limiter positions said bolt such that said cover is in position in said drain.

### Claim 5 (depends on 4)

The cover of claim 4 wherein said support is a strainer.

### Claim 6 (depends on 4)

The cover of claim 4 wherein said support is a plurality of struts disposed within said drain.

### Claim 7 (depends on 4)

The cover of claim 4 wherein said first end may be manipulated to screw and unscrew said bolt into said nut.

### Claim 8

An apparatus comprising;
a drain having an opening, said opening having an outboard edge;
a cover covering said drain and having an underside having a portion including a downwardly extending curved section and an outer edge, wherein said portion extends a first distance beyond said outboard edge and wherein said cover extends a second distance above said drain such that splash and aerosolization of fluid from under said cover beyond said cover is minimized said cover having:
a first nut attaching thereto and extending downwardly therefrom;
a second nut;
a bolt; and
a drain strainer for covering said drain, said drain strainer having an opening and a drain hole wherein said bolt extends through said opening to engage said first nut and to engage said second nut to attach said cover to said drain strainer and wherein said underside and said downwardly extending rim cooperate such that splash from said strainer beyond said cover is minimized.

### Claim 9 (depends on 8)

The drain apparatus of claim 8 wherein said bolt further comprises:
a first threaded portion of larger dimension for engaging said first nut,
a second threaded portion of smaller dimension relative to said larger dimension for engaging said second nut, and
an intermediate portion between said larger portion and said smaller portion for engaging said strainer wherein said if said second nut is tightened said first threaded portion of larger dimension touches said strainer.

### Claim 10 (depends on 9)

The drain apparatus of claim 9 wherein if said first nut is threaded on said first threaded portion of larger dimension said first nut engages said strainer.

### Claim 11

A drain apparatus for use with a sink, said drain apparatus comprising;
a drain having an opening, said opening having an outboard edge;
a cover covering said drain opening and having an underside having a portion including a downwardly extending curved section and an outer edge, wherein said portion extends a first distance beyond said outboard edge and wherein said cover extends a second distance above said drain such that splash and aerosolization of fluid from under said cover beyond said cover is minimized;
a support for disposition within said drain and holding a nut in a central location therein;
a bolt having a first end disposed in and extending through said cover and having a length and a threaded portion at second end thereof, distal from said cover, and
said bolt further comprising a depth limiter, wherein if said threaded portion is threaded into said nut, said depth limiter positions said bolt such that said cover is in position in said drain.

### Claim 12 (depends on 11)

The cover of claim 11 wherein said support is a strainer.

### Claim 13 (depends on 11)

The cover of claim 11 wherein said support is a plurality of struts disposed within said drain.

### Claim 14 (depends on 11)

The cover of claim 11 wherein said first end may be manipulated to screw and unscrew said bolt into said nut.

### Claim 15

A drain apparatus, said drain apparatus comprising;
a sink,
a drain in said sink, said drain having an opening, said opening having an outboard edge,
a cover covering said drain opening, said cover extending completely above said sink and having an underside having a portion including a downwardly extending curved section and an outer edge, wherein said portion extends a first distance beyond said outboard edge and wherein said cover extends a second distance above said drain such that a ratio of said second distance to said first distance is about 1 or less wherein said first distance is greater than or equal to said second distance and such that splash and aerosolization of fluid from under said cover beyond said cover is minimized.