Metallic container dome configured to deform at a predetermined pressure
AssigneeBall Metalpack, LLC
InventorsDavid J. Ness, Rick L. Lord
Life of this patent
Estimating the term…
Abstract
Methods and apparatus for forming a metallic dome are provided. More specifically, the present invention relates to a metallic dome that may be used to seal an aerosol container. The metallic dome includes a novel flattened relief panel and an inwardly oriented arch configured to deform in response to pressure within the aerosol container exceeding a predetermined amount. In one embodiment, the flattened relief panel is substantially planar. Optionally, the metallic dome includes at least a first inwardly oriented arch with a first radius of curvature and a second inwardly oriented arch with a second radius of curvature.
Claims15
1-8. (canceled)
A forming tool to shape a metallic dome for an aerosol container, the metallic dome having a geometry configured to deform in response to a predetermined pressure within the aerosol container, comprising:
- a body portion configured to be interconnected to a tooling assembly;
- and
- a face portion to shape an inwardly oriented arch of the metallic dome, the face portion having a first diameter and including:
- a first outwardly oriented arch with a first radius of curvature;
- a second outwardly oriented arch interconnected to the first outwardly oriented arch, the second outwardly oriented arch having a second radius of curvature;
- and
- a flattened portion which is substantially linear and including a second diameter that is between approximately 17.0% and approximately 21.0% of the first diameter.
15-20. (canceled)
A method of making a metallic dome adapted to deform to pressure within an aerosol container, the method comprising:
- providing a blank of metallic material;
- loading the blank into the forming tool of claim 1;
- forming the blank into a metallic dome which includes one or more of:
- a peripheral curl for interconnection to an open lower end of a sidewall of the aerosol container, the peripheral curl having an interior diameter;
- a first inwardly oriented arch interconnected to the peripheral curl and having a first radius of curvature;
- and
- a second inwardly oriented arch interconnected to the first inwardly oriented arch and having a second radius of curvature;
- and
- a flattened relief panel interconnected to one of the first and second oriented arches.
Dependencies are inferred from the claim text.