A base including an inwardly and upwardly projecting flexible surface within a continuous seating ring supports a generally cylindrical wall extending upward from the base. A plurality of annular inwardly projecting, and vertically flexible rings interrupting the cylindrical wall. At least one of ri
A base including an inwardly and upwardly projecting flexible surface within a continuous seating ring supports a generally cylindrical wall extending upward from the base. A plurality of annular inwardly projecting, and vertically flexible rings interrupting the cylindrical wall. At least one of rings projects inwardly more than some others of the rings to achieve an improved sidewall crush resistance A shoulder portion, includes a plurality of vertical ribs separating a plurality of vacuum responsive panels. The vertical flexibility of the bottle sidewall reduces the amount of flexing required in the shoulder panels and base to accommodate the same vacuum development, and enhances the total amount of post capping vacuum development that can be accommodated by the bottle as a whole.
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What is claimed is: 1. A plastic bottle configured to resist unwanted deformation comprising: a base including a continuous seating ring surrounding an inwardly projecting flexible surface, a cylindrical wall extending upward from the base defining a longitudinal axis, a plurality of annular inward
What is claimed is: 1. A plastic bottle configured to resist unwanted deformation comprising: a base including a continuous seating ring surrounding an inwardly projecting flexible surface, a cylindrical wall extending upward from the base defining a longitudinal axis, a plurality of annular inwardly projecting and vertically flexible rings extending about the cylindrical wall perimeter and interrupting the cylindrical wall, at least one of the plurality of rings projecting inwardly more than some others of the plurality of rings, and a shoulder portion extending upward from the cylindrical wall, the shoulder including a plurality of vertical ribs separating a plurality of vacuum responsive flexible panels, the vertical ribs having ends that are smoothly continuous with the shoulder surface. 2. A blow-molded, hot-fill bottle comprising: a base including a continuous seating ring surrounding an inwardly projecting flexible surface, a body portion located above the base, the body portion having a cylindrical wall reinforced with a plurality of annular inwardly projecting rings interrupting the cylindrical wall and extending about the perimeter thereof, at least one of the plurality of rings projecting inwardly more than some others of the plurality of rings, at least some of the rings being vertically flexible, and a shoulder connected to a finish located above the body portion, the shoulder having circular ring defining a lower margin and a neck below the finish defining an upper margin, a plurality of upright ribs extending lengthwise of the shoulder in spaced relation between the upper and lower margins, a plurality of flexible panels separating the upright ribs and extending between the upper and lower margins, the flexible panels, inwardly projecting flexible surface of the base, and vertically flexible rings being adapted to flex in response to pressure changes in the bottle to accommodate entirely any vacuum induced in the bottle as a result of hot-fill processing. 3. A blow-molded, hot-fill plastic bottle comprising: a base including a continuous seating ring surrounding an inwardly projecting flexible surface, a body portion located above the base, the body portion having a generally cylindrical wall with a plurality of annular inwardly projecting, vertically flexible, rings interrupting the cylindrical wall and extending about the perimeter thereof, at least one of the plurality of rings, situated between at least two others of the plurality of rings, projecting inwardly more than some others of the plurality of rings to provide resistance against radial collapse of the cylindrical wall, and a shoulder connected to a finish located above the body portion, the shoulder having circular ring defining a lower margin and a neck below the finish defining an upper margin, a plurality of upright ribs extending lengthwise of the shoulder in spaced relation between the upper and lower margins, a plurality of flexible panels separating the upright ribs and extending between the upper and lower margins, the flexible panels, inwardly projecting flexible surface of the base, and vertically flexible rings being of sufficient flexibility to flex in response to pressure changes in the bottle to accommodate entirely any vacuum induced in the bottle as a result of hot-fill processing. 4. The bottle of claim 1, 2 or 3, wherein the base further comprises a step radially inward from and adjacent to the seating ring of the base. 5. The bottle of claim 1, 2 or 3, wherein the base further comprises a central ring situated inside and above the seating ring surrounding the longitudinal axis of the bottle, and a shaped generally horizontal surface within the central ring. 6. The bottle of claim 5, wherein the base further comprises convex conical surface coupling the seating ring to the central ring. 7. The bottle of claim 1, 2 or 3, wherein each of the shoulder ribs has a width that is tapered from a wider lower end to a narrower upper end. 8. The bottle of claim 1, 2 or 3, wherein each of the shoulder ribs has an outer surface that is inwardly inclined from the rib lower end to the rib upper end. 9. The bottle of claim 8, wherein each of the shoulder ribs has an outer surface that is substantially linear adjacent the rib lower end and bowed adjacent the rib upper end. 10. The bottle of claim 1, 2 or 3, wherein each of the shoulder flexible panels is tapered in width from a wider lower portion to a narrower upper portion. 11. The bottle of claim 10, wherein each shoulder vacuum responsive panels comprises corners that are arcuate in the plane of the panel. 12. The bottle of claim 1, 2 or 3, wherein the cylindrical wall comprises a series of generally cylindrical surfaces at a substantially constant radius from the longitudinal axis of the bottle, each surface of the series being separated from an adjacent surface of the series by one of said annular inwardly projecting rings. 13. The bottle of claim 1 or 2, wherein said ring projecting inwardly more than other rings is situated between at least two other rings. 14. The bottle of claim 1, 2 or 3, comprising a plurality of said rings projecting inwardly more than other inwardly projecting rings of the sidewall.
Alberghini Alfred C. (Dunwoody GA) Brunson David A. (Marietta GA) Lynn Stephen R. (Douglasville GA), Hot fill container with reconfigurable convex volume control panel.
Bono James L. (Cincinnati OH) Gutting Louis Y. (Cincinnati OH) Skidmore John E. (Hamilton OH), Non-handled lightweight plastic bottle with a substantially rigid grip design to facilitate pouring without loss of cont.
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