Double shell closure with support ribs
AssigneeRexam Medical Packaging Inc.
InventorC. Edward Luker
Life of this patent
Estimating the term…
Abstract
A bottle closure having an outer shell with a frusto-conical configuration and a rib-supported threaded inner shell is described. The frusto-conical configuration of the outer shell allows the user to easily pickup the package and grip the closure and remove it from a bottle. The inner shell is threaded to allow the closure to engagingly mate with threads on a bottle or similar container. The inner shell is supported by ribs which face toward the outer shell. The ribs provide that the inner shell can be unscrewed from a threaded core of a manufacturing mold during production without causing noticeable distortion in the closure.
Claims10
A container closure comprising:
- a. a top, having an interior surface and an exterior surface;
- b. an annular outermost skirt, depending from and being centered on the interior surface of said top, said outermost skin having a first face which faces inward toward the center of said outermost skirt, a second face which faces outward from said outermost skirt, a top edge which abuts said top, and a bottom edge, and said outermost skirt having a first diameter at the top edge of the outward face and a second diameter at the bottom edge of the outward face wherein said top diameter is greater than said bottom diameter causing said outermost skirt to have a frusto-conical configuration on the exterior surface;
- c. an annular innermost skirt, depending from and being centered on the interior surface of said top, said innermost skirt having a first surface which faces inward toward the center of the skirt and a second surface which faces outward toward said outermost skirt;
- d. at least one thread attached to the inward facing surface of said innermost skirt;
- and
- e. at least one rib, depending from said top and extending radially along said top to said outermost skirt, said rib also being attached to the outward facing surface of said innermost skirt and said inward face of said outermost skirt;
- f. said at least one rib having a first axial dimension at said innermost skirt and a second axial dimension at said outer skirt, said first axial dimension being less than said second axial dimension.
A container closure, comprising:
- a top wall and an outer skirt having a first diameter depending from said top wall;
- an inner skirt having a second diameter smaller than said first diameter depending from said top wall;
- a plurality of ribs depending from said top wall along an inner face of said outermost skirt and extending to an outer face of said innermost skirt;
- said outer skirt being tapered and being frusto-conical in shape;
- each of said plurality of ribs being opposite an outer skirt rib positioned on said outer face of said outer skirt;
- each of said plurality of ribs being substantially L-shaped.
Dependencies are inferred from the claim text.