CLOSURE WITH IMPACT RESISTANT RIBS
A closure that includes a top panel and a transition section extending downwardly from a peripheral edge of the top panel is provided. The closure includes a skirt extending from a peripheral edge of the transition section such that the skirt extends away from the top panel and a plurality of raised ribs. Each of the plurality of raised ribs includes a first portion extending outwardly from an outer surface of the skirt and extending axially along at least a portion of the skirt and a second portion positioned above the first portion and extending outwardly from an outer surface of the transition section.
Latest Patents:
- METHODS AND THREAPEUTIC COMBINATIONS FOR TREATING IDIOPATHIC INTRACRANIAL HYPERTENSION AND CLUSTER HEADACHES
- OXIDATION RESISTANT POLYMERS FOR USE AS ANION EXCHANGE MEMBRANES AND IONOMERS
- ANALOG PROGRAMMABLE RESISTIVE MEMORY
- Echinacea Plant Named 'BullEchipur 115'
- RESISTIVE MEMORY CELL WITH SWITCHING LAYER COMPRISING ONE OR MORE DOPANTS
The present invention relates generally to the field of closures for containers. The present invention relates specifically to closures configured for impact resistance.
BACKGROUND OF THE INVENTIONThis section is intended to provide a background or context to the invention that is recited in the claims. The description herein may include concepts that could be pursued, but are not necessarily ones that have been previously conceived or pursued. Therefore, unless otherwise indicated herein, what is described in this section is not prior art to the description and claims in this application and is not admitted to be prior art by inclusion in this section.
Closures are utilized to seal or close containers for a wide variety of items including food, drink, medicine, cleaning products, etc. For many applications, integrity of the closure and integrity of the seal between the closure and the container must be maintained from the time when the container is filled and sealed until the closure is removed from the container by the end user. A closure may be subject to a variety of impact events (e.g., dropping, impact with processing machinery, impact with adjacent containers and/or shipping materials, etc.) that may causes a closure to crack or to release from the container. Such a breach in the integrity of the closure or the seal created by the closure may result in contamination, spoilage or spillage of the contents of the container.
SUMMARY OF THE INVENTIONOne embodiment of the invention relates to a closure that includes a top panel and a transition section extending downwardly from a peripheral edge of the top panel. The closure includes a skirt extending from a peripheral edge of the transition section such that the skirt extends away from the top panel and a plurality of raised ribs. Each of the plurality of raised ribs includes a first portion extending outwardly from an outer surface of the skirt and extending axially along at least a portion of the skirt and a second portion positioned above the first portion and extending outwardly from an outer surface of the transition section.
Another embodiment of the invention relates to an impact resistant closure that includes a generally circular top wall and a transition section extending from a peripheral edge of the top wall. The closure includes a generally cylindrical skirt extending from a peripheral edge of the transition section such that the skirt is substantially perpendicular to the top wall and a plurality of raised ribs. Each of the plurality of raised ribs includes a first portion extending outwardly from an outer surface of the skirt and extending axially along at least a portion of the skirt and a second portion positioned above the first portion and extending outwardly from an outer surface of the transition section. The second portions of the plurality of raised ribs are configured to deform upon impact to resist failure of the closure.
Another embodiment of the invention relates to a closure configured to be coupled to a container. The closure includes a top wall, a rounded shoulder section extending from an outer edge of the top wall and a skirt extending from an outer edge of the rounded shoulder section. The closure includes at least one thread extending from an inner surface of the skirt configured for engagement with threading located on a neck portion of the container and a plurality of raised ribs. Each of the plurality of raised ribs includes a first portion extending outwardly from an outer surface of the skirt and extending axially along at least a portion of the skirt and a second portion positioned above the first portion and extending outwardly from an outer surface of the rounded shoulder section. The closure includes a tamper evident band including a frangible connecting element coupling the tamper evident band to the skirt.
Alternative exemplary embodiments relate to other features and combinations of features as may be generally recited in the claims.
This application will become more fully understood from the following detailed description, taken in conjunction with the accompanying figures, wherein like reference numerals refer to like elements in which:
Before turning to the figures, which illustrate the exemplary embodiments in detail, it should be understood that the present application is not limited to the details or methodology set forth in the description or illustrated in the figures. It should also be understood that the terminology is for the purpose of description only and should not be regarded as limiting.
Referring to
The skirt 14 includes an upper section or portion 26, and a lower section or portion 28. As shown in
In the embodiment shown in
The closure 10 also includes a tamper evidencing structure, shown as tamper evident band 38 in
Referring to
As shown in
As shown in
As shown in
As shown in
As shown in
In various embodiments, the radius of curvature R defining the continuous curved segment 70 of the second portion 44 of the rib 30 may be selected to vary the impact resistant characteristics of the ribs 30. In one exemplary embodiment, the closure 10 is a 43 mm closure and R is about 0.070 inches.
As shown in
Referring to
In various embodiments, the closures discussed herein may be formed from a plastic or polymer material. In various embodiments, the closures may be formed by injection molding or by compression molding. For example, the closures may be injection molded from polypropylene homopolymer resin. In specific embodiments, the closures may be made from a clear (e.g., translucent or transparent) polypropylene homopolymer resin, or they may be made from a clear random copolymer polypropylene. In various embodiments, the clear material of the closure is such that the engagement structure (e.g., threading 54) is visible from the outside of the closure through skirt 14. Impact resistant ribs, such as the ribs 30, may allow for the closures to be made using less material (e.g., the closure with ribs 30 may have thinner sidewalls and may weigh less) than a closure without impact resistant ribs while still providing acceptable impact resistant properties. Further, impact resistant ribs, such as ribs 30, may allow for the closures to be made from a material that has inherently lower impact resistant qualities than some other materials (e.g., impact resistant copolymers, etc.), while still providing acceptable impact resistant properties.
In various embodiments, the closures discussed herein may be of various sizes intended to seal containers of various sizes and having various contents. In some exemplary embodiments, the closures are configured to seal containers such as metal, glass or plastic containers or bottles for holding liquids. In specific embodiments, the closures may be 43 mm closures. In various embodiments, the ribs described herein, including ribs having the specific shapes, sizes, positioning etc., of the ribs 30 described herein, have been found to provide increased impact resistance when compared to some closures without such ribs or to closures having ribs of some other shapes, sizes, positioning, etc.
Further modifications and alternative embodiments of various aspects of the invention will be apparent to those skilled in the art in view of this description. Accordingly, this description is to be construed as illustrative only. The construction and arrangements of the closure, as shown in the various exemplary embodiments, are illustrative only. Although only a few embodiments have been described in detail in this disclosure, many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described herein. Some elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Other substitutions, modifications, changes and omissions may also be made in the design, operating conditions and arrangement of the various exemplary embodiments without departing from the scope of the present invention.
Claims
1. A closure, comprising:
- a top panel;
- a transition section extending downwardly from a peripheral edge of the top panel;
- a skirt extending from a peripheral edge of the transition section such that the skirt extends away from the top panel; and
- a plurality of raised ribs, each of the plurality of raised ribs including: a first portion extending outwardly from an outer surface of the skirt and extending axially along at least a portion of the skirt, and a second portion positioned above the first portion and extending outwardly from an outer surface of the transition section.
2. The closure of claim 1, wherein the transition section comprises a rounded shoulder having a curved outer surface.
3. The closure of claim 2, wherein the second portions of the plurality of raised ribs each include a rounded shoulder segment extending between the top panel and the first portion of each of the plurality of raised ribs.
4. The closure of claim 3, wherein an inner segment of the outer surface of the rounded shoulder of each of the plurality of raised ribs lies in the same plane as an outer surface of the top panel.
5. The closure of claim 3, wherein the second portion of each of the plurality of raised ribs does not extend axially above the peripheral edge of the top panel.
6. The closure of claim 1, wherein the plurality of raised ribs are each symmetric about a radial line extending through the center of each of the plurality of raised ribs.
7. The closure of claim 6, wherein the plurality of raised ribs include left and right sidewalls, the left and right sidewalls positioned at angles relative to the outer surfaces of the skirt and the transition section such that the left and right sidewalls converge, thereby defining outer edges of the plurality of raised ribs.
8. The closure of claim 7, wherein the outer edges of the plurality of raised ribs are rounded in the circumferential direction.
9. The closure of claim 1, wherein the skirt includes a downwardly and outwardly extending frustoconical portion positioned at the lower end of the skirt.
10. The closure of claim 9, wherein a lower section of each of the plurality of raised ribs extends in a radial direction along an outer surface of the frustoconical portion of the skirt.
11. An impact resistant closure, comprising:
- a generally circular top wall;
- a transition section extending from a peripheral edge of the top wall;
- a generally cylindrical skirt extending from a peripheral edge of the transition section such that the skirt is substantially perpendicular to the top wall; and
- a plurality of raised ribs, each of the plurality of raised ribs including: a first portion extending outwardly from an outer surface of the skirt and extending axially along at least a portion of the skirt, and a second portion positioned above the first portion and extending outwardly from an outer surface of the transition section,
- wherein the second portions of the plurality of raised ribs are configured to deform upon impact to resist failure of the closure.
12. The closure of claim 11, wherein the transition section comprises a rounded shoulder having a curved outer surface.
13. The closure of claim 11, wherein the second portions of the plurality of raised ribs each include a rounded shoulder segment extending between the top wall and the first portion of each of the plurality of raised ribs.
14. The closure of claim 13, wherein an inner segment of the outer surface of the rounded shoulder of each of the plurality of raised ribs lies in the same plane as an outer surface of the top wall.
15. The closure of claim 14, wherein the closure is s sized to fit a container neck finish having an outer thread diameter of about 43 mm.
16. The closure of claim 13, wherein the plurality of raised ribs include first and second sidewalls, the sidewalls converging to define an outer edge of each of the plurality of raised ribs, and wherein the outer edges of the plurality of raised ribs are rounded in the circumferential direction.
17. A closure configured to be coupled to a container, comprising:
- a top wall;
- a rounded shoulder section extending from an outer edge of the top wall;
- a skirt extending from an outer edge of the rounded shoulder section;
- at least one thread extending from an inner surface of the skirt configured for engagement with threading located on a neck portion of the container;
- a plurality of raised ribs, each of the plurality of raised ribs including: a first portion extending outwardly from an outer surface of the skirt and extending axially along at least a portion of the skirt, and a second portion positioned above the first portion and extending outwardly from an outer surface of the rounded shoulder section; and
- a tamper evident band including a frangible connecting element coupling the tamper evident band to the skirt.
18. The closure of claim 17, wherein the closure is injection molded from a polypropylene homopolymer resin.
19. The closure of claim 17, wherein the closure is coupled to the container.
20. The closure of claim 17, wherein the second portions of the plurality of raised ribs each include a rounded shoulder segment extending between the top wall and the first portions of each of the plurality of raised ribs, and further wherein an inner segment of the rounded shoulder of each of the plurality of raised ribs lies in the same plane as an outer surface of the top wall.
Type: Application
Filed: May 27, 2010
Publication Date: Dec 1, 2011
Applicant:
Inventors: James M. Taber (Aurora, IL), Kevin W. Orth (Des Plaines, IL), Darren R. Neputy (Palos Hills, IL)
Application Number: 12/789,079
International Classification: B65D 41/04 (20060101);