# US 2016/0258147 A1 · Strainer and insert assembly

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- Number: US 2016/0258147 A1
- Document ID: US20160258147A1
- Status: Published application
- Kind: A1
- Application number: 15/159,407
- Filed: 2016-05-19
- Published: 2016-09-08
- Earliest claimed: 2010-05-28
- Assignees: IPS Corporation
- Applicants: IPS Corporation
- Inventors: Robert A. Oropallo; Anthony Oropallo
- Web page: https://patentgrep.com/patent/US20160258147A1

## CPC

- E03C 1/26: Object-catching inserts or similar devices for waste pipes or outlets (E03C1/28 takes precedence)
- B23P 17/04: characterised by the nature of the material involved or the kind of product independently of its shape
- E03C 1/244: Separate devices to be placed on the outlet opening
- Y10T 29/49826: Assembling or joining
- Y10T 29/4987: Elastic joining of parts
- 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
- B23P: METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS (arrangements for copying or controlling B23Q)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A tubular strainer having a wall defining interior and exterior surfaces, and a first flange on the upper end of the wall, a tubular insert having a cylindrical wall sized for reception by the tubular strainer, and a second flange carried by the insert wall, an elastomeric seal having a tubular body fittingly sealingly carried by the insert cylindrical wall, the seal body configured for progressive compressive radial sealing engagement with the strainer wall interior surface when endwise inserted by the insert within said tubular strainer.

## Claims

### Claim 1

An assembly comprising:
a tubular strainer having a wall defining interior and exterior surfaces, and a first flange on an upper end of the wall;
a tubular insert having a cylindrical wall and a second flange located at an upper end of the cylindrical wall; and
an elastomeric seal having a tubular body fittingly sealingly carried by the cylindrical wall of the insert,
wherein the seal body includes an outer wall configured for progressive compressive radial sealing engagement with the strainer wall interior surface when the insert and seal are inserted within the tubular strainer.

### Claim 2 (depends on 1)

The assembly of claim 1, wherein the strainer interior surface is tapered along its length.

### Claim 3 (depends on 2)

The assembly of claim 2, wherein the strainer interior surface is coated with a low friction substance.

### Claim 4 (depends on 1)

The assembly of claim 1, wherein the seal is tubular to define parallel internal and external seal surfaces, the seal external surface having an elongated wall portion in compressive engagement with the strainer internal surface.

### Claim 5 (depends on 1)

The assembly of claim 1 further comprising irregularities on the outer surface of the cylindrical wall of the insert and configured to engage and retain the seal in position on the insert.

### Claim 6 (depends on 5)

The assembly of claim 5, wherein the irregularities define a knurl.

### Claim 7 (depends on 1)

The assembly of claim 1 further comprising a radial lip at the lower distal end of the cylindrical wall of the insert and configured to assist retaining the seal in position on the cylindrical wall.

### Claim 8 (depends on 1)

The assembly of claim 1, wherein the seal has a cylindrical inner surface that extends throughout the seal endwise extent, and which resiliently grips the cylindrical wall of the insert.

### Claim 9 (depends on 1)

The assembly of claim 1, wherein the seal body extends to the second flange, and is spaced radially inwardly of the first flange.

### Claim 10

A method of assembling an insert and strainer assembly comprising:
providing a tubular strainer having a wall defining interior and exterior surfaces, and a first flange on an upper end of the wall;
providing a tubular insert having a cylindrical wall and a second flange located at an upper end of the cylindrical wall;
providing an elastomeric seal having a tubular body that includes an outer wall;
retaining the seal on the cylindrical wall of the tubular insert; and
inserting the insert and seal into the strainer such that the outer wall of the seal progressively engages with the interior surface of the strainer as the insert and seal are forced downwardly into the strainer.