# US 10,865,036 B2 · Beverage can having a grommet

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- Number: US 10,865,036 B2
- Document ID: US10865036B2
- Status: Granted
- Kind: B2
- Application number: 16/224,928
- Filed: 2018-12-19
- Published: 2019-04-25
- Granted: 2020-12-15
- Earliest claimed: 2016-04-21
- Assignees: Crown Packaging Technology, Inc.
- Applicants: CROWN Packaging Technology, Inc.
- Inventors: Richard Mark Orlando Golding
- Web page: https://patentgrep.com/patent/US10865036B2

## CPC

- B65D 83/425: {Delivery valves permitting filling or charging}
- B21D 51/38: Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
- B21D 51/383: {scoring lines, tear strips or pulling tabs}
- B65D 1/165: {Cylindrical cans}
- B65D 1/20: characterised by location or arrangement of filling or discharge apertures
- B65D 83/38: Details of the container body (pressure relief devices B65D83/70)
- B65D 83/42: Filling or charging means
- B21D 28/28: in tubes or other hollow bodies
- B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B21D: WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (working or processing of wire B21F)

## Abstract

A drawn and wall ironed beverage can body, method for forming same, and a sealed and filled can, include a through-hole or aperture in the base. A grommet for charging a propellant in can is located in the aperture. The aperture has a burr that is located on the inboard side of the rim of the aperture. A method of forming a valve in the drawn and ironed beverage can body includes positioning a first tool in an interior of the can body, contacting an exterior surface of the base with a second tool such that the first and second tools are aligned, forming the aperture in the base, and inserting the grommet into the aperture.

## Claims

### Claim 1

A method of forming a valve in a drawn and ironed beverage can body, the method comprising:
in a one-piece, drawn and ironed beverage can body that includes a dome in a base, a foot outboard of the base, and an elongate ironed sidewall extending upwardly from the foot, the dome having an aperture therethrough and a wall about the aperture that terminates in a rim, the rim having an inboard side and an outboard side, wherein the inboard side is radially inward relative to the outboard side with respect to the aperture,
positioning a first tool in an interior of the can body, the first tool contacting an interior surface of the dome;
contacting an exterior surface of the dome with a second tool such that the first and second tools are aligned;
forming the aperture in the dome by the contacting steps of the first and second tools such that a burr is formed on the inboard side of the rim of the aperture; and
inserting a grommet into the aperture, such that the burr is inwardly oriented relative to the grommet.

### Claim 2 (depends on 1)

The method of claim 1 further comprising deforming a portion of the dome adjacent the aperture to form an upstanding wall.

### Claim 3 (depends on 2)

The method of claim 2 wherein the deforming step occurs at the same time as the forming step and before the inserting step.

### Claim 4 (depends on 2)

The method of claim 2 wherein the upstanding wall is vertical or nearly vertical.

### Claim 5 (depends on 2)

The method of claim 2 wherein the upstanding wall is circumferential about the aperture.

### Claim 6 (depends on 2)

The method of claim 2 wherein the dome is recess-less about the upstanding wall such that the base of the grommet is not recessed relative to the dome.

### Claim 7 (depends on 2)

The method of claim 2 wherein the dome has a recess about the upstanding wall such that the base of the grommet is recessed relative to the dome.

### Claim 8 (depends on 2)

The method of claim 2 wherein the upstanding wall terminates at a rim surface that forms an angle A relative to a horizontal reference line that is between −30 degrees and 60 degrees.

### Claim 9 (depends on 8)

The method of claim 8 wherein angle A is between zero and 45 degrees.

### Claim 10 (depends on 8)

The method of claim 8 wherein angle A is between 5 and 40 degrees.

### Claim 11 (depends on 1)

The method of claim 1 wherein the burr contacts the grommet.

### Claim 12 (depends on 1)

The method of claim 1 wherein the grommet, after the inserting step, includes a base located on the outboard side of the dome, a crown located on the inboard side of the dome, and a neck between the base and the dome for receiving the rim of the aperture.

### Claim 13 (depends on 1)

The method of claim 1 wherein the burr contacts a neck of the grommet after the inserting step when the grommet is in its sealing state.

### Claim 14 (depends on 1)

The method of claim 1 wherein the grommet is adapted for contacting a liquid product after seaming and filling steps.