Abstract: A one piece plastic container for carbonated beverages has a footed base structure. The upper portion of the base structure includes hollow projections between which are formed relatively stiff strap formations. A deformable open region at the upper end of the strap formations is easily deformed and expands in a controlled fashion when the container is pressurized. Outward movement of the open region causes outward movement of the upper ends of the strap formations which then pivot about the feet causing the lower ends of the strap formations and the central region of the base structure to move upwardly.

Abstract: A plastics container includes a neck and an outlet opening, a container body and a base; the base comprising a plurality of circumferentially spaced legs, each leg terminating in a foot portion on which the container is adapted to stand wherein each leg is provided with at least one longitudinally inwardly extending crease. Preferably each leg is provided with a single crease which extends downwardly and inwardly at least to the extent necessary so to substantially divide the foot portion of each leg into two separate support portions on which the container is adapted to stand.

Abstract: A thin walled metal container is formed with a bottom wall having a substantially flat central panel connected to a container side wall through an annular rest radius defining an annular support surface for the container. The annular rest radius includes an outer connecting web portion leading into the container side wall and an inner connecting web portion leading into the central panel. In the preferred embodiment, these connecting web portions are permanently joined to each other by welding or adhesive bonding to resist column loading forces acting through the side wall and internal pressure forces acting through the central panel which have the effect of unrolling the annular rest radius. Since these curved opposing portions of the rest radius are immobilized to resist column and internal pressurization, a thinner gauge metal can be used to satisfy design parameters and achieve cost and metal reduction savings.

Abstract: An improved container for storing and transporting a hot pizza product that includes a top and bottom with nonzero Gauss curvatured structures over a major portion of the supporting surface so that less material need be used for fabrication without a lowering of structural integrity. The top and bottom members are adapted to nest with other like tops and bottom members to reduce the need storage space near the pizza oven where they are ready for use without preassembly. The floor of the bottom comprises upstanding projections with small top surface area to reduce the heat conduction path and to support the product above the floor to form an air insulating space between the product and the floor. The bottom member includes a sidewall that intersects the floor to form a supporting line when resting on a supporting surface, thermal conduction being limited to such line. The curved, convex shape of the floor then provides a closed air insulating space between the bottom and the resting surface.

Abstract: A container (1) of thermoplastic material for containing liquids comprises an anti-bulging base (5) comprising a flat ring-shaped section (9) and a central dome-shaped section (11). The diameter of the central dome-shaped section (11) is relatively large and comprises at least 60% of the diameter of the container (1). The central dome-shaped section (11) consists of a lateral wall (15) of relatively large radius of curvature and a relative flat cap (17). The ring-shaped section (9) acts as a spring, giving away to internal pressure build-up in the container, which preferably is a household bleach bottle of polyethylene. Thus the pressure on the central dome-shaped part (11), which is designated for minimum thickness and maximum strength, is relieved.

Abstract: A storage trunk for storing and transporting lighting equipment is constructed using a rotationally molded cross linked polyethylene plastic. The storage trunk is comprised of an enclosure body and a separately removable lid. The lid may be secured to the enclosure body by means of a plurality of latches. The interior of the enclosure body may be molded as a generally open rectangular region or may include molded features for receiving and supporting specific lighting instruments within its interior. The hollow walls of the molded enclosure body are filled with polyurethane foam for reinforcing the walls and damping their movement. A perforated metal stiffening frame is molded into the base of the enclosure body during the molding process for added strength. The underside of the enclosure body provides a plurality of casters for easy movement. The storage trunk features a unitized, seamless construction having no fasteners or external reinforcements to leak, snag other objects, or fall off.

Abstract: A base configuration for use with biaxially stretched blow molded PET containers is provided. In particular, the base includes a concave spherical portion disposed at a central position on the base. A first protruding circular member is formed around the circumference of the concave spherical portion. An annular groove is disposed around the first protruding circular member. A second protruding circular member is formed around the circumference of the annular groove. Five legs extend radially outward from the second protruding circular member. The outer surface of each leg subtends an angle of 72 degrees, and a curved rib is formed between every pair of legs, the ribs having an umbrella bone structure and each of the ribs subtending an angle of 0 degree, whereby the base of the container has an increased internal pressure resistance and thus prevents cracking in the base.

Abstract: An integrally molded plastic drum having a cylindrical body, a top wall, and a bottom wall is provided. The bottom wall has a central recessed portion and an annular generally flat horizontal bottom wall portion surrounding the central recessed portion. The annular bottom wall portion has a first recess, a second recess, and a discrete hand engageable lifting indentation therein. The central recessed portion, first and second recesses, and the discrete lifting indentation collectively contain the molding parting line extending across the bottom wall of the drum. The top wall of the drum has a central concave portion which serves as a collection well in the event of spillage and also serves to facilitate the drainage of the drum when the drum is inverted. The top wall defines a pair of spaced apart bungholes therein. The bungholes are positioned in a diametrically opposing relation, with one of the bungholes serving as a filling spout and the other bunghole serving as a pouring spout.

Abstract: A freestanding container base having an improved combination of properties in regard to creep resistance, stress crack resistance, impact strength, weight, standing stability and formability. The container base has a substantially hemispherical bottom wall which includes four radiating ribs, and four legs extending downwardly from the bottom wall between the ribs and each of which terminates in a foot. Each rib has a rib wall forming part of the substantially hemispherical bottom wall and having an angular extent of from about 15.degree. to about 30.degree. for enhanced strength, with the leg occupying the remaining 75.degree. to 60.degree. angular extent for enhanced formability. The outer edge and angular extent of the foot are predetermined for enhanced stability and ease of formability. Preferably, the creep resistance is further enhanced by straightening the upper rib portion or providing an enlarged-diameter truncated bottom wall.

Abstract: A preform, a method for blow molding a bottle, and a bottle formed from the preform and by the method are disclosed for use with beverages and the like wherein the bottles usually contain such beverages under pressure. The preform is shaped so that the resultant bottle is provided with a product-containing portion having a preferred hemispherical end portion and an integral bottom portion including a void therein for defining a hollow base portion which, in one form, contains fluid under pressure for balancing pressures related to the pressurized product. The hollow base portion provides for efficient use of material, and a minimal number of manufacturing steps, for providing a stable base for the hemispherical end portion of the product containing portion of the bottle.

Abstract: A highly-drawn and blow-molded polyester bottle is disclosed have a barrel resin layer forming a bottle wall with a circumferential yield point of higher than 1,800 kg/cm.sup.2 and a heightwise yield point of higher than 800 kg/cm.sup.2.

Abstract: A generally rectangular transparent and clear container for packing pressure-sensitive adhesive sheet stock which has a base and a cover that engage with each other with a snap action to establish a generally continuous closure around the perimeter of the container. The base has a raised bottom portion which has formed therein a series of spaced apart channels which are parallel to the end walls of the base, and a series of spaced apart channels which are parallel to the side walls of the base. A plurality of raised pads are formed between the channels which support the pressure sensitive adhesive sheet stock above a border channel which defines the perimeter of the base.

Abstract: A drawn container is disclosed having a substantially cylindrical sidewall extending upwardly from an integral base portion to form an open neck which is double seamed with a top end closure. The base portion has a downwardly extending, generally U-shaped, circumferential nose portion, the outside surface of which defines the plane of the base of the container on which the container normally sets. The nose portion is defined by a radius between a substantially vertical inner wall and an outside wall. The outside wall extends from a lower portion of the sidewall through a convex lower body radius to a concave profile radius disposed above the nose portion. A frustoconical portion is provided between the convex lower body radius and the concave profile radius. The frustoconical portion forms a lower body angle of at least 30.degree. with respect to the plane of the base of the container.

Abstract: A base configuration for use with biaxially stretched blow molded PET containers is provided. In particular, the base includes a concave spherical portion disposed at a central position on the base. A protruding annular member is formed around the circumference of the concave spherical portion, and five legs extend radially outward from the annular member. The outer surface of each leg subtends an angle ranging from 40-72 degrees, and a curved rib formed between every pair of legs, the rib subtending an angle ranging from 32-0 degrees, whereby the base of the container has an increased internal pressure resistance and thus prevents cracking in the base.

Abstract: A plastic blow molded container (10) is disclosed as including a freestanding base structure (20) that is constructed with a plurality of alternating hollow legs 22 and curved ribs (34), and a hub (41) from which the legs and ribs extend radially with a construction that provides good stability against tipping as well as the capability of withstanding internal pressure. Each rib (34) has an outer upper end (36) with a circumferential width W.sub.u and an inner lower end (38) with a circumferential width W.sub.l that is greater than the circumferential width W.sub.u of the upper rib end so the lower rib end is capable of resisting stress cracking. An intermediate rib portion (40) of a curved shape tapers between the ends with an included angle B in the range of about 1.degree. to 8.degree. and preferably about 2.degree..

Abstract: A retortable plastic container has a bottom wall having resting surface which surrounds a primary recessed portion. The primary recessed portion surrounds a secondary recessed portion. When the bottom wall of the container is viewed head-on the primary recessed portion has an outline which is circular, while the secondary recessed portion has an outline which is non-circular. The secondary recessed portion has major and minor axes which are mutually perpendicular and intersect one another on a longitudinal axis of the container. The distance across the secondary recessed portion along the major axis divided by the distance across the secondary recessed portion along the minor axis is greater than 1 but not greater than 3.

Abstract: A substantially cylindrical plastic bottle has a base including a plurality of bulges separated by arcuate ribs. Outer surfaces of the bulges extend vertically down to the bottoms thereof defining a bearing surface of the bottle. The ribs and the bulges extend inwardly to a spherically concave common portion of the base located at the central longitudinal axis of the bottle. The bottle also has a plurality of similar recesses extending therein in a regular pattern at the same height and separated by respective vertical ribs so as to facilitate a gripping and handling of the bottle. The bottle is thus suitable for packaging pressurized and non-pressurized liquids.

Abstract: A plastic container having an improved base structure. The base structure generally includes an inwardly domed inner wall having panels formed therein. The panels are inclined relative to the remainder of the inner wall and, at the juncture, form inwardly directed corners that provide increased stiffness and structural integrity to the base structure allowing use of the container with low carbonation beverages. The panels are also integrally formed with a lower end of an outer wall which defines a line of contact extending continuous around the base structure. This simplified base structure makes the container more cost efficient to produce and also allows it to be used with non-carbonated beverages.

Abstract: A container, such as a bucket, for containing tools of particulate material, such as mixed sand and cement, which has two leg members extending from its underside, the leg members being arranged to sit astride the apex of a pitched roof so that the container can sit stably on the roof apex. The container is useful for working on a roof, particularly when fitting the ridge tiles.

Abstract: A blow-molded container of thermoplastic resin has a hollow body with a generally cylindrical side wall portion rotationally symmetric about a longitudinal axis of the container. A shoulder portion integrally joins the side wall portion to a finish. An integral base merging with the side wall portion is defined by an outer surface comprising a plurality of downward projections separated from each other by generally arcuate segments extending essentially from the cylindrical side wall to the longitudinal axis of the container. The bottom of the container includes a web extending between a central portion adjacent the longitudinal axis of the container and a generally perpendicular ring segment in each of the downward projections for providing enhanced stability against deflection during entry of the filling liquid into the container which aids in the prevention of bottom failure from stress cracking associated with the rigors of the filling procedure.

Abstract: This relates to a returnable/refillable container in the form of a blow molded polyester biaxially oriented bottle wherein the container includes a domed base construction wherein the wall thickness gradually and smoothly increases to a maximum at the center of the dome. This also relates to a specially configurated preform which is blow molded to form the container and a specially configurated blow mold cavity for receiving a preform having a lower axial projection in the form of an elongated gate without crushing.

Abstract: A plastic blow molded container (10) is disclosed as including a freestanding base structure (20) that is constructed with a plurality of downwardly projecting hollow legs 22, a plurality of curved ribs (34) located between the legs, and a hub 41 from which the legs and ribs extend radially with a construction that provides good stability against tipping as well as the capability of withstanding internal pressure. Each leg (22) has a lower flat foot (24) coplanar with the other feet and the feet have an outer diameter D.sub.f that is at least 0.75 of the diameter D of the cylindrical body portion. Each flat foot (24) also has a junction (28) with an associated outer wall (26) of the foot and this junction has a radius of curvature R.sub.j less than 0.05 of the diameter D of the cylindrical body portion.

Abstract: A blow-molded container of thermoplastic resin has a hollow body with a generally cylindrical side wall portion rotationally symmetric about a longitudinal axis of the container. A shoulder portion integrally joins the side wall portion to a finish. An integral base merging with the side wall is defined by an outer surface comprising a plurality of downward projections separated from each other by generally arcuate segments extending essentially from the cylindrical side wall to the longitudinal axis of the container. The shoulder and sidewall portions are tempered during formation of the container to withstand hot filling at a temperature of at least about 170.degree. F. and subsequent introduction of a cryogenic liquid gas to provide an initial pressurization of at least 20 psi at the fill temperature.

Abstract: A container with improved strength includes a cylindrical sidewall that is disposed around a vertical axis, and a bottom. The bottom of the container provides a supporting surface and includes a bottom recess portion that is disposed radially inwardly of the supporting surface. The bottom recess portion includes a center panel, and a dome positioning portion that positions the center panel above the supporting surface. The dome positioning portion includes a first part that is disposed at a first radial distance from the vertical axis and adjacent part that is disposed at a different radial distance from the vertical axis. In the container, a plurality of the adjacent parts are arcuately disposed are circumferentially spaced around the dome positioning portion and are interspersed with a plurality of the first parts.

Abstract: This relates to the packaging of a hot liquid product in a container having little resistance to internal vacuum wherein immediately after the container has been filled, the container is internally pressurized and closed. This particularly relates to an injection molded preform formed of a suitable polyester resin which is of a configuration related to an intended blow mold cavity whereby the desired biaxial orientation is obtained in the various portions of the resultant container and the wall thickness of the container base is increased so as to prevent undue stress enlargement and creep at high internal pressurization. Internal pressurization on the order of 40-45 psig is envisioned.

Abstract: This invention provides a synthetic resin thin-walled bottle, a tubular intermediate therefor and a method of producing a thin-walled bottle. The thin-walled bottle has ribs at least at its bottom portion, and the bottle bottom is raised up frusto-conically or has an undulatory shape. The tubular intermediate is first formed with ribs which become thin-walled protuberant ribs after blow molding. The thin-walled bottle is produced by blow-molding the ribbed tubular intermediate.

Abstract: A container of blow-moulded oriented thermoplastic material includes a base structure comprising a convex annular surface (which may be divided into a plurality of feet (118) by radial webs (112) and a central re-entrant portion (116). In blow-moulding the container, a moulded preform is enclosed within a mould heated, and stretched such that its bottom surface impinges upon a projecting surface of the mould bottom corresponding to the topmost surface (158) of the re-entrant portion. After blow-moulding, the material of the re-entrant portion (116) remains unoriented and relatively thick in comparison to the material of the remainder of the base. The unoriented material in the base is substantially confined to the re-entrant portion (116) which itself is strengthened by its relatively thick walls and the base thus exhibits improved creep and stress cracking properties.

Abstract: A blow molded PET container is disclosed having a ribbed base structure to provide stiffening of the base structure to prevent undesirable deformation. The container is designed to accommodate moderate internal pressurization of 30 to 50 psi to provide packaging for products which must be contained in a pressurized package but not pressurized to the extent of a carbonated beverage. The reinforcing ribs required in the base structure are thus not as deep as found in ribbed base structures for carbonated beverage containers resulting in less plastic resin required to produce the container. As a result, the container fills a void in the packaging industry between containers for non-pressurized products and containers for highly pressurized carbonated beverages.

Abstract: Apparatus and method for forming a self-standing skirt on the pressure bottom of a blow-molded carbonated beverage container. The preform is formed with an annular depending skirt, and the skirt is stretched with a stretch mechanism which engages all but a lower portion of the preform, so that during the stretching of the preform concurrently with the blowing of the preform in a bottle mold, the lower portion folds inwardly to form a bottom ledge on the stretched skirt. The mold is provided with a centering mechanism for assuring the centering of the preform within the mold cavity to assure that the preform skirt receives the skirt stretching mechanism.

Abstract: A plastic blow molded container (10) is disclosed as including a freestanding base structure (20) that is constructed with a plurality of downwardly projecting hollow legs 22, a plurality of curved ribs (34) located between the legs, and a hub 41 from which the legs and ribs extend radially with a construction that provides good stability against tipping as well as the capability of withstanding internal pressure. Each leg (22) has a lower flat foot (24) coplanar with the other feet and the feet have an outer diameter D.sub.f that is at least 0.75 of the diameter D of the cylindrical body portion. Each flat foot (24) also has a junction (28) with an associated outer wall (26) of the foot and this junction has a radius of curvature R.sub.j less than 0.05 of the diameter D of the cylindrical body portion.

Abstract: An enclosure having a self-supporting side wall formed of a plurality of laterally spaced ribs with non-self-supporting thin webs therebetween whereby the ribs and webs cooperate one with the other to provide an enclosure having shape-retaining characteristics. A bottom wall is provided constituting an integral extension of the side wall with the ribs being scored at the juncture of the side and bottom walls to permit the material to be folded such that the side wall and bottom wall lie generally normal one to the other. Blow molding and blown film techniques are used to form the enclosure.

Abstract: Bunghole-equipped barrel of a synthetic resin with a blow-molded sidewall with a bottom, and with a lid made of a plastic injection-molded component with integrally molded-on bungholes. The lid (4) has a central, trough-like indentation (9) which in a substantially upended position (1') of the barrel (1), forms a shallow drainage dome (10) sloping downward toward the bunghole orifices (7, 8). The lid (4) has an outer ring (12) having an L-profile serving as a supporting ring, carrying ring, and roller chime, projecting past the bungholes (5, 6) in a direction parallel to the longitudinal axis (11--11) of the barrel. Ridges (15, 16) extend from the lid (4) at a spacing around the bungholes (5, 6) and have the same height (17) as the outer ring (12) for protecting the bungholes (5, 6) and for supporting a stacked barrel.

Abstract: A blow molded, biaxially oriented plastic container with a bottom portion including an axially, inwardly directed generally conical portion, a standing section on which the container rests, a heel portion joining the bottom portion and container body portion, and a hinge portion joining the conical portion and the standing section, wherein the wall thickness of the hinge portion is greater than the wall thickness of the heel portion.

Abstract: A blow-molded bottle of thermoplastic resin has a hollow body with a generally cylindrical side wall rotationally symmetric about a longitudinal axis of the bottle and an integral base merging with the side wall. The base is defined by an outer surface having a plurality of arcuately extending downward projections separated from each other by hemispherical segments extending from the cylindrical side wall to the longitudinal axis of the bottle. Each of the arcuately extending downward projections has a first inclined portion contiguous to the longitudinal axis, a second inclined portion situated radially outside of, and axially displaced downwardly from, the first inclined portion, a generally perpendicular ring segment having an upper edge united with the first inclined portion by a curved portion having a radius of between about 0.015 in. and 0.060 in., and a lower edge united with the second inclined portion.

Abstract: A plastics bottle for carbonated drinks has a side wall (4) and a base (5) formed with a central area (8) surrounded by circumferentially spaced projecting feet (6) separated by substantially parallel-sided straps (7). The central area (8) and the straps (7) define a continuous smooth domed surface with no re-entrant portions. The ratio of the combined width of the straps (7) to the outside circumference of the base (5) is in the range from 1:5.5 to 1:6.5 and preferably 1:6. Preferably the base (5) has only seven projecting feet (6). This configuration is particularly useful with bottles of small size and enables a saving in plastics material of up to 40% by weight.

Abstract: A polyester container particularly adapted for hot fill applications having an improved base configuration. The container base has an outer circular ring defining a support plane for the container with a central outwardly concave dome portion therein. The dome portion includes a number of reinforcing rings formed along concentric tangent lines. In accordance with several embodiments, the circular rings are uninterrupted, whereas in other embodiments, the rings are interrupted at regular angular intervals with relatively smooth zones or hemispherical pockets therebetween. The containers provide excellent mechanical stability in response to positive and negative pressure within the container, and also in response to unrelaxed retractive stresses within the container material which tend to cause deformation of the container, particularly when exposed to elevated temperatures during demolding of the container and during the hot fill cycle.

Abstract: A blown bottle useful for containing a carbonated beverage bottle is formed with an annular single thickness depending skirt formed integrally with the bottle bottom providing a self-standing support for the bottle.A parison or preform for the blow molding of bottle is formed with a rounded, closed bottom portion and a cylindrical and integral annular single thickness skirt portion, for use in blow molding of a carbonated beverage bottle having an integral skirt for free-standing.The method of making a self-standing bottle, such as for carbonated beverages and the like, includes the forming of a bottle preform with an annular depending skirt which surrounds a closed bottom portion, and blowing the preform while gripping the skirt portion and spreading it outwardly and downwardly in relation to the orientation of the bottle to form an annular support skirt or platform in the blown bottle.

Abstract: A synthetic resin thin-walled bottle, a tubular intermediate therefor and a method of producing a thin-walled bottle. The thin-walled bottle has ribs at least at its bottom portion, and the bottle bottom is raised up frusto-conically or has an undulatory shape. The tubular intermediate is first formed with ribs which become thin-walled protuberant ribs after blow molding. The thin-walled bottle is produced by blow-molding the ribbed tubular intermediate.

Abstract: An improved base configuration for a plastic container used in hot-fill applications. The base is concentric with the side walls of the container and an outer ring of the base is connected to a central dome portion which extends upwardly into the body cavity of the container and terminates in a central disk region, which is also generally concentric with the side walls of the container. Radiating in a substantially spiral fashion, from the central disk downward along the dome to the outer ring, are a number of reinforcement ribs and slides which increases the amount of material in the base which is sufficiently oriented and able to resist the deformation induced by unrelaxed retractive stresses during filling of the container with a liquid of elevated temperature.

Abstract: An improved base configuration for a blow molded plastic container used in hot-fill applications. The base consists of a peripheral support ring that is generally concentric with the container side walls and connected to a central dome portion. The dome extends upwardly into the body cavity of the container and terminates in a central disk region that is also concentric with the container side walls. A number of raised involute embossments radiate about the central disk in a substantially spiral fashion downward along the dome. The embossments are limited to that area of the dome where unrelaxed retractive stresses may be formed during blow molding of the container. The embossments increase the amount of material in the base which becomes sufficiently oriented so as to resist the deformation induced by the unrelaxed retractive stresses during hot filling of the container.

Abstract: A blow molded plastic bottle has a reinforced plastic bottom with a concave central portion and a bottom rim portion. A solid depending rib, formed at the pinch off seam, extends across the concave portion, and depending hollow ribs, formed in the concave portion at ninety degress to the solid rib, extend radially to the bottom rim portion. The hollow rims effectively reduce the depth of the bottom rim intermediate the seam junctions to reduce bulging of the concave base thereby preventing instability.

Abstract: A fluid handling system includes chemical handling tanks which are relatively stable and difficult to tip over, are farmer hoistable in that such can be lifted with flexible hoisting line securely received around the tanks, and are readily stackable for storage thereof. Each tank includes a generally hollow body portion and a supporting portion integral with the body portion. The supporting portion includes a base and a tip-over-preventing portion for preventing the tank from tipping over when the tank is tilted laterally about the base. The supporting portion also includes grooves extending therein which flexible hoisting lines can be securely received for allowing the tanks to be transported. The supporting portion is also designed to accommodate the fork of a forklift. The tanks are also stackable and are nested via ribs projecting from the top portion of tanks and grooves defined at the underside of the tanks.

Abstract: An extrusion is provided which includes an upper double sidewall and a lower bulbous portion forming an integral pallet structure. This extrusion can be cut to suitable lengths and welded at the corners to form a sealed rectangular container bottom. A bottom panel is welded around its peripheral edge to the extrusion lengths. Reinforcing I-beams can be placed across the bottom and laterally spaced openings can be cut in the ends and sides of the bottom portions for receiving fork-lift tines. These cut-out portions can be reinforced by tubes or channel members, as required. This structure minimizes the critical welding required to make a sealed container bottom, since only the corner welds and the bottom panel welds are located where air leakage can occur.

Abstract: A blow-molded plastic container having a body comprising a neck portion, a generally cylindrical sidewall portion and a bottom structure. The bottom structure comprises a central portion, a plurality of ribs extending downwardly from the bottle sidewall to the central portion, and a plurality of feet extending below the central portion from the sidewall portion. The ribs are defined by an upper curvilinear surface and, in cross-section are of an substantially U-shape having a relatively tight radius, the upper rib surfaces lying on a generally hemispherical curvature in the interior of said container.

Abstract: A one-piece metallic can body member comprising a cylindrical relatively thin side wall portion; an open end rim portion; a dome-shape bottom wall portion having a concave dome-shape central portion, a convex axially outwardly extending lowermost annular support rib portion connected to the dome-shape central portion, and a radially outmost inclined connecting wall portion which extends between the side wall portion and the lowermost annular support rib portion. A plurality of circumferentially spaced radially inwardly extending convex groove-rib portions in the concave dome-shape central portion extend radially inwardly from the lowermost annular support rib portion. An annular convex groove-rib portion is located in the concave dome-shape central portion and intersects the radially inwardly extending convex groove-rib portions.

Abstract: An improved beverage bottle support base is disclosed having an upwardly directed conical inner wall, the apex of which is centrally of the base and a convex outer wall of annular shape surrounding the conical inner wall and merging therewith and with the side wall of the bottle. A plurality of reinforcing grooves extend radially outward from the apex and merging with the convex outer wall, dividing the conical inner wall and convex outer wall into a plurality of spaced apart hollow feet.