A bottle base made of plastic material, particularly for beverages, of the type which has, on its bottom, reinforcement recesses. The reinforcement recesses comprise a recess which runs along a transverse reference dimension of the base; the recess forms a main rib inside the base.
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The invention claimed is: 1. A bottle base made of plastic material and having a bottom and a supporting surface, particularly for beverages, of the type which has, on said bottom, reinforcement recesses, said reinforcement recesses being formed by a first recess which runs along a first transverse
The invention claimed is: 1. A bottle base made of plastic material and having a bottom and a supporting surface, particularly for beverages, of the type which has, on said bottom, reinforcement recesses, said reinforcement recesses being formed by a first recess which runs along a first transverse reference dimension of the bottle base, said first recess being adapted to form a first main rib inside the base, the bottle base comprising a second recess, which lies along a second transverse reference dimension, substantially perpendicular to the first transverse dimension along which said first main rib lies, said second recess being suitable to provide a second auxiliary rib, a distance between the supporting surface and at least one lowest point of the first main rib being greater than a distance between at least one lowest point of said second auxiliary rib and said supporting surface. 2. The bottle base of claim 1, wherein a top profile of said first main rib is substantially U-shaped. 3. The bottle base of claim 2, wherein the top profile of said first main rib is composed selectively of a circular arc, a combination of circular arcs, a combination of segments, or a combination of at least one circular arc and segments. 4. The bottle base of claim 3, wherein a top profile of said second auxiliary rib is formed substantially by two concavities which are symmetrical and lie radially and are mutually connected centrally by a third concavity in the vicinity of the center and connected to a cylindrical body of the bottle by lateral concavities. 5. The bottle base of claim 4, wherein said first main rib and said second auxiliary rib are symmetrical with respect to a longitudinal axis of said bottle and intersect at a center, or in the vicinity thereof, of said bottom, so that a lowest point of the top profile of said first main rib or the one that lies closest to the supporting surface for said first main rib is interposed between two additional lowest points of the top profile of said second auxiliary rib, a distance between said supporting surface and a minimum point of the first main rib being greater than a distance between each one of said additional lowest points of said second auxiliary rib and said supporting surface. 6. The bottle base of claim 1, wherein said reinforcement recesses further comprise additional recesses, which are adapted to form corresponding strengthening ribs for the bottom portions comprised between said first main rib and said second auxiliary rib. 7. The bottle base of claim 6, wherein said additional recesses lie along a substantially radial direction. 8. The bottle base of claim 7, wherein a top profile of said additional recesses has a substantially W-shaped longitudinal cross-section. 9. The bottle base of claim 4, wherein a height of the base, measured between the supporting surface and a connecting point between said base and a cylindrical body of the bottle to which it belongs, is comprised between 0.25 and 0.5 times a maximum transverse reference dimension of said base. 10. The bottle base of claim 9, wherein the height of the base, measured between the supporting surface and the connecting point between said base and the cylindrical body of the bottle of which said base is part is comprised between 0.33 and 0.4 times the maximum transverse reference dimension of said base. 11. The bottle base of claim 10, wherein said distance is comprised between one fifth and one third of said height. 12. The bottle base of claim 11, wherein said distance is comprised between 0.23 and 0.26 times the height. 13. The bottle base of claim 2, wherein on a longitudinal cross-section of said base, a maximum distance between a point of the outer circumference of the bottom and a tangent to the top profile of the first main rib, which is substantially U-shaped, in the direction at right angles to said tangent, is comprised between one and four times an additional maximum distance between a segment which connects a connecting point between said base and the cylindrical body to said center, and a straight line which is parallel to said segment and is tangent to said first main rib, at right angles to said segment. 14. The bottle base of claim 13, wherein said maximum distance is comprised between 1.5 and two times said additional maximum distance. 15. The bottle base of claim 13, wherein said additional maximum distance is shorter than said maximum distance. 16. The bottle base of claim 15, wherein said additional maximum distance is comprised between one third and one half of said maximum distance. 17. The bottle base of claim 9, having a substantially circular transverse cross-section, said transverse reference dimension being a diameter. 18. The bottle base of claim 9, having a substantially quadrilateral transverse cross-section, said transverse reference dimension being a segment which is perpendicular to one side of said quadrilateral cross-section and runs from a first side to an opposite second side, passing through a center. 19. The bottle base of claim 18, wherein said substantially quadrilateral cross-section is square.
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이 특허에 인용된 특허 (10)
Sasaki,Masaaki; Iizuka,Takao, Bottle-shaped container made of synthetic resin.
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