Closure cap
AssigneeAnchor Hocking Corporation
InventorCharles S. Ochs
Life of this patent
Estimating the term…
Abstract
A metal closure cap is described for sealing containers. It is of the lug type having a metal shell with a flowed-in gasket. The cap differs from prior twist caps of this general type by having a tapered corner between the cap top and the cap skirt. This corner design permits a reduced amount of metal to be used and further provides a more rigid closure corner permitting the use of lighter-weight metal. Improved methods of forming the cap shell, including the corner portion are also described.
Claims14
In a closure cap having a metal shell with a cover and a depending skirt and having a flowed-in plastisol sealing gasket and inwardly projecting lugs formed on the bottom of the skirt for engaging lugs on a container the improvement comprising said cap skirt having a tapered upper portion extending downwardly and outwardly to the top of a generally cylindrical lower skirt portion, said sealing gasket being positioned in a downwardly facing channel extending radially outwardly to the top of said tapered skirt portion and said tapered upper portion having a radial dimension approximately equal to the radial width of the cap lugs and a vertical dimension greater than half the skirt height.
A sealed package comprising the combination of a closure cap and a container where said container has a plurality of projecting lugs extending outwardly from a generally cylindrical rim portion and where said closure cap has a cover with a sealing gasket on its under surface and a depending skirt with inwardly projecting lugs on the skirt bottom engaging said container lugs the improvement comprising an improved cap skirt having a downwardly flaring upper skirt portion terminating in a generally cylindrical lower skirt portion, said upper flaring portion extending downwardly and outwardly from a position above the outer edge of said container rim portion to a position outwardly of said container lugs, said sealing gasket being positioned in a downwardly facing channel extending radially outwardly to the top of said tapered skirt portion and said tapered upper portion having a radial dimension approximately equal to the radial width of the cap lugs and a vertical dimension greater than half the skirt height.
Dependencies are inferred from the claim text.