Patent US4525401A successfully refreshed from Google Patents.
US4525401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic container with internal rib reinforced bottom
Assignee: Graham Packaging Pet Technologies Inc
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Filing: 1979-11-30
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Granted: 1985-06-25
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Expires: 1999-11-30
Abstract
Abstract This disclosure relates to a plastic bottle having a bottom structure of the champagne bottle type. The bottom is reinforced by radiating ribs which are circumferentially spaced and the ribs, utilizing a minimum of material, stiffen the bottom so as to prevent the domed inner section of the bottom from reverting and also greatly resist creep of the bottom under the influence of time and internal pressure. The ribs may be only across the juncture section between inner and outer sections of the bottom, or may extend entirely from the outer section across the juncture section and substantially to the domed center of the domed section. The ribs may also be upstanding and serve to function as guides for a liquid product being placed into the bottle so as to reduce turbulences and aid in expediting the filling operation.
Inventors
- 👤 John F. E. Pocock
- 👤 Gautam K. Mahajan
- 👤 Suppayan M. Krishnakumar
- 👤 Kenneth F. M. Friendship
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:56
CPC Classifications
B; B65; B65D; B65D1/00; B65D1/02; B65D1/0223; B65D1/0261; B65D1/0276; B29; B29C; B29C45/00; B29C45/17; B29C45/26; B29C49/00; B29C49/08; B29C49/10; B29C49/12; B29C49/121; B29C49/1216; B29C2949/00; B29C2949/07; B29C2949/072; B29C2949/0725; B29C2949/073; B29C2949/0731; B29C2949/074; B29C2949/0747; B29C2949/076; B29C2949/0768; B29C2949/077; B29C2949/0772; B29C2949/0773; B29C2949/0777; B29C2949/078; B29C2949/20; B29C2949/22; B29C2949/24; B29C2949/26; B29C2949/28; B29K; B29K2105/00; B29K2105/25; B29K2105/253; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1397; Y10T428/21; Y10T428/214
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
156 words
A bottom structure of a thermoplastic bottle, said bottom structure comprising an outer bottom portion having a radially inner lower edge, an inner generally radially and axially concaved bottom portion disposed within said outer bottom portion in recessed relation and having a radially outer lower edge, and a continuous annular generally arcuate cross-sectional intermediate bottom portion joining the lower edges of said outer bottom portion and said inner bottom portion; the improvement of means reinforcing said continuous intermediate bottom portion against deflection, said means being in the form of a plurality of circumferentially spaced radiating solid ribs formed on an interior surface of said bottom structure and extending at least generally across said continuous intermediate bottom portion, each of said ribs having end portions terminating respectively in said outer bottom portion and said inner bottom portion, said inner bottom portion including an uppermost thickened dome, and said inner ends of said ribs terminating adjacent said dome.
Claim 2
Dependent Claim
156 words
A bottom structure of a thermoplastic bottle, said bottom structure comprising an outer bottom portion having a radially inner lower edge, an inner generally radially and axially concaved bottom portion disposed within said outer bottom portion in recessed relation and having a radially outer lower edge, and a continuous annular generally arcuate cross-sectional intermediate bottom portion joining the lower edges of said outer bottom portion and said inner bottom portion; the improvement of means reinforcing said continuous intermediate bottom portion against deflection, said means being in the form of a plurality of circumferentially spaced radiating solid ribs formed on an interior surface of said bottom structure and extending at least generally across said continuous intermediate bottom portion, each of said ribs having end portions terminating respectively in said outer bottom portion and said inner bottom portion, said inner bottom portion including an uppermost thickened dome, and said inner ends of said ribs terminating adjacent said dome.
Claim 3
Dependent Claim
160 words
A bottom structure of a thermoplastic bottle, said bottom structure comprising an outer bottom portion having a radially inner lower edge, an inner generally radially an axially concaved bottom portion disposed within said outer bottom portion in recessed relation and having a radially outer lower edge, and a continuous annular generally arcuate cross-sectional intermediate bottom portion joining the lower edges of said outer bottom portion and said inner bottom portion; the improvement of means reinforcing said continuous intermediate bottom portion against deflection, said means being in the form of a plurality of circumferentially spaced radiating solid ribs formed on an interior surface of said bottom structure and extending at least generally across said continuous intermediate bottom portion, each of said ribs having end portions terminating respectively in said outer bottom portion and said inner bottom portion, said inner bottom portion including an uppermost thickened dome, and said inner ends of said ribs terminating in said dome in spaced adjacent relation.
Claim 4
Dependent Claim
160 words
A bottom structure of a thermoplastic bottle, said bottom structure comprising an outer bottom portion having a radially inner lower edge, an inner generally radially an axially concaved bottom portion disposed within said outer bottom portion in recessed relation and having a radially outer lower edge, and a continuous annular generally arcuate cross-sectional intermediate bottom portion joining the lower edges of said outer bottom portion and said inner bottom portion; the improvement of means reinforcing said continuous intermediate bottom portion against deflection, said means being in the form of a plurality of circumferentially spaced radiating solid ribs formed on an interior surface of said bottom structure and extending at least generally across said continuous intermediate bottom portion, each of said ribs having end portions terminating respectively in said outer bottom portion and said inner bottom portion, said inner bottom portion including an uppermost thickened dome, and said inner ends of said ribs terminating in said dome in spaced adjacent relation.
Claim 5
Dependent Claim
136 words
A bottom structure of a thermoplastic bottle, said bottom structure comprising an outer bottom portion having a radially inner lower edge, an inner generally radially and axially concaved bottom portion disposed within said outer bottom portion in recessed relation and having a radially outer lower edge, and a continuous annular generally arcuate cross-sectional intermediate bottom portion joining the lower edges of said outer bottom portion and said inner bottom portion; the improvement of means reinforcing said continuous intermediate bottom portion against deflection, said means being in the form of a plurality of circumferentially spaced radiating solid ribs formed on an interior surface of said bottom structure and extending at least across said continuous intermediate bottom portion, each rib being generally tear drop shape in plan and having a rounded nose terminating in said inner bottom portion.
Claim 6
Dependent Claim
136 words
A bottom structure of a thermoplastic bottle, said bottom structure comprising an outer bottom portion having a radially inner lower edge, an inner generally radially and axially concaved bottom portion disposed within said outer bottom portion in recessed relation and having a radially outer lower edge, and a continuous annular generally arcuate cross-sectional intermediate bottom portion joining the lower edges of said outer bottom portion and said inner bottom portion; the improvement of means reinforcing said continuous intermediate bottom portion against deflection, said means being in the form of a plurality of circumferentially spaced radiating solid ribs formed on an interior surface of said bottom structure and extending at least across said continuous intermediate bottom portion, each rib being generally tear drop shape in plan and having a rounded nose terminating in said inner bottom portion.
Claim 7
Dependent Claim
125 words
A bottom structure of a thermoplastic bottle, said bottom structure comprising an outer bottom portion having a radially inner lower edge, an inner generally radially and axially concaved bottom portion disposed within said outer bottom portion in recessed relation and having a radially outer lower edge, and a continuous annular generally arcuate cross-sectional intermediate bottom portion joining the lower edges of said outer bottom portion and said inner bottom portion; the improvement of means reinforcing said continuous intermediate bottom portion against deflection, said means being in the form of a plurality of circumferentially spaced radiating solid ribs formed on an interior surface of said bottom structure and extending at least generally across said continuous intermediate bottom portion, each rib being generally elongated oval in plan.
Claim 8
Dependent Claim
125 words
A bottom structure of a thermoplastic bottle, said bottom structure comprising an outer bottom portion having a radially inner lower edge, an inner generally radially and axially concaved bottom portion disposed within said outer bottom portion in recessed relation and having a radially outer lower edge, and a continuous annular generally arcuate cross-sectional intermediate bottom portion joining the lower edges of said outer bottom portion and said inner bottom portion; the improvement of means reinforcing said continuous intermediate bottom portion against deflection, said means being in the form of a plurality of circumferentially spaced radiating solid ribs formed on an interior surface of said bottom structure and extending at least generally across said continuous intermediate bottom portion, each rib being generally elongated oval in plan.
Claim 9
Dependent Claim
123 words
A bottom structure of a thermoplastic bottle, said bottom structure being of the type including an inner generally radially and axially concaved bottom portion disposed in recessed relation with respect to the remainder of said bottom structure and being surrounded by a continuous generally arcuate cross-sectional lowermost bottom portion; the improvement of means reinforcing said continuous lowermost bottom portion against deflection, said means being in the form of a plurality of circumferentially spaced radiating solid ribs formed on an interior surface of said bottom structure and extending at least generally across said continuous lowermost bottom portion, and said ribs terminating in said bottom structure, said inner bottom portion including an uppermost thickened dome, and inner ends of said ribs terminating adjacent said dome.
Claim 10
Dependent Claim
123 words
A bottom structure of a thermoplastic bottle, said bottom structure being of the type including an inner generally radially and axially concaved bottom portion disposed in recessed relation with respect to the remainder of said bottom structure and being surrounded by a continuous generally arcuate cross-sectional lowermost bottom portion; the improvement of means reinforcing said continuous lowermost bottom portion against deflection, said means being in the form of a plurality of circumferentially spaced radiating solid ribs formed on an interior surface of said bottom structure and extending at least generally across said continuous lowermost bottom portion, and said ribs terminating in said bottom structure, said inner bottom portion including an uppermost thickened dome, and inner ends of said ribs terminating adjacent said dome.
Claim 11
Dependent Claim
124 words
A bottom structure of a thermoplastic bottle, said bottom structure being of the type including an inner generally radially and axially concaved bottom portion disposed in recessed relation with respect to the remainder of said bottom structure and being surrounded by a continuous generally arcuate cross-sectional lowermost bottom portion; the improvement of means reinforcing said continuous lowermost bottom portion against deflection, said means being in the form of a plurality of circumferentially spaced radiating solid ribs formed on an interior surface of said bottom structure and extending at least generally across said continuous lowermost bottom portion, and said ribs terminating in said bottom structure, each rib being generally tear drop shape in plan and having a rounded nose terminating in said inner bottom portion.
Claim 12
Dependent Claim
124 words
A bottom structure of a thermoplastic bottle, said bottom structure being of the type including an inner generally radially and axially concaved bottom portion disposed in recessed relation with respect to the remainder of said bottom structure and being surrounded by a continuous generally arcuate cross-sectional lowermost bottom portion; the improvement of means reinforcing said continuous lowermost bottom portion against deflection, said means being in the form of a plurality of circumferentially spaced radiating solid ribs formed on an interior surface of said bottom structure and extending at least generally across said continuous lowermost bottom portion, and said ribs terminating in said bottom structure, each rib being generally tear drop shape in plan and having a rounded nose terminating in said inner bottom portion.
Claim 13
Dependent Claim
111 words
A bottom structure of a thermoplastic bottle, said bottom structure being of the type including an inner generally radially and axially concaved bottom portion disposed in recessed relation with respect to the remainder of said bottom structure and being surrounded by a continuous generally arcuate cross-sectional lowermost bottom portion; the improvement of means reinforcing said continuous lowermost bottom portion against deflection, said means being in the form of a plurality of circumferentially spaced radiating solid ribs formed on an interior surface of said bottom structure and extending at least generally across said continuous lowermost bottom portion, and said ribs terminating in said bottom structure, each rib generally elongated oval in plan.
Claim 14
Dependent Claim
111 words
A bottom structure of a thermoplastic bottle, said bottom structure being of the type including an inner generally radially and axially concaved bottom portion disposed in recessed relation with respect to the remainder of said bottom structure and being surrounded by a continuous generally arcuate cross-sectional lowermost bottom portion; the improvement of means reinforcing said continuous lowermost bottom portion against deflection, said means being in the form of a plurality of circumferentially spaced radiating solid ribs formed on an interior surface of said bottom structure and extending at least generally across said continuous lowermost bottom portion, and said ribs terminating in said bottom structure, each rib generally elongated oval in plan.
References Cited (Backward Citations)
FR882497A
Cited
US3137748A
Cited
US3043461A
Cited
FR1436468A
Cited
GB1114304A
Cited
GB1161572A
Cited
US3468443A
Cited
GB1177875A
Cited
GB1239531A
Cited
GB1360107A
Cited
US3757978A
Cited
US4005245A
Cited
GB1441657A
Cited
US3900120A
Cited
US3870181A
Cited
GB1406958A
Cited
US3871541A
Cited
US3881621A
Cited
US3956441A
Cited
US4024975A
Cited
US3935955A
Cited
GB1528512A
Cited
US3961113A
Cited
US4134510A
Cited
US4174782A
Cited
US4108324A
Cited
US4170622A
Cited
US4151249A
Cited
GB2034663A
Cited
US4261948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-24 | 1988-12-24 | 1989-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-24 | 1992-12-24 | 1993-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-24 | 1996-12-24 | 1997-06-25 | $7700.00 | Window Closed / Lapsed |