Beverage can having a grommet
AssigneeCrown Packaging Technology, Inc.
InventorRichard Mark Orlando Golding
Life of this patent
Estimating the term…
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.
Claims14
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.
Dependencies are inferred from the claim text.