US4785948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blow molded plastic container having a reinforced wall structure and preform therefor
Assignee: US CONTAINER Corp A CORP OF DE
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Filing: 1987-05-01
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Granted: 1988-11-22
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Expires: 2007-05-01
Abstract
Abstract A plastic preform for forming blow molded plastic containers and plastic containers wherein the container has a tubular body portion adjacent a bottom portion and extending onto said bottom portion having circumferentially spaced, radially extending, continuous alterations in wall thickness. In one embodiment the container also includes at least one continuous, thickened portion at discrete locations on at least one of the inside and outside wall face adjacent the bottom structure extending completely circumferentially around the periphery thereof.
Inventors
- 👤 Herbert Strassheimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:19
CPC Classifications
B; B65; B65D; B65D1/00; B65D1/02; B65D1/0223; B65D1/0261; B65D1/0276; B29; B29C; B29C2949/00; B29C2949/07; B29C2949/072; B29C2949/0723; B29C2949/0724; B29C2949/0725; B29C2949/073; B29C2949/0732; B29C2949/0733; B29C2949/074; B29C2949/0746; B29C2949/0747; B29C2949/076; B29C2949/0761; B29C2949/0766; B29C2949/0768; B29C2949/077; B29C2949/0772; B29C2949/0773; B29C2949/0777; B29C2949/078; B29C2949/20; B29C2949/22; B29C2949/24; B29C2949/26; B29C2949/28; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1397
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
122 words
A plastic preform for forming blow molded plastic bottles which comprises: a neck portion defining an opening; a tubular body portion depending therefrom; and an integral bottom structure depending from the tubular body portion; said preform having an outside wall face and an inside wall face, with at least one of the inside wall face and the outside wall face of the tubular body portion adjacent the bottom structure and extending onto said bottom structure having a plurality of flat faces capable of forming a blow molded plastic bottle with a bottom portion having circumferentially spaced radially extending continuous alterations in wall thickness with a regularly undulating cross-section across the circumference thereof, wherein said alterations in wall thickness are progressive and gradual.
Claim 2
Dependent Claim
122 words
A plastic preform for forming blow molded plastic bottles which comprises: a neck portion defining an opening; a tubular body portion depending therefrom; and an integral bottom structure depending from the tubular body portion; said preform having an outside wall face and an inside wall face, with at least one of the inside wall face and the outside wall face of the tubular body portion adjacent the bottom structure and extending onto said bottom structure having a plurality of flat faces capable of forming a blow molded plastic bottle with a bottom portion having circumferentially spaced radially extending continuous alterations in wall thickness with a regularly undulating cross-section across the circumference thereof, wherein said alterations in wall thickness are progressive and gradual.
Claim 3
Dependent Claim
14 words
A preform according to claim 1 wherein said flat faces form a hexagonal configuration.
Claim 4
Dependent Claim
21 words
A preform according to claim 1 wherein the inside face adjacent the bottom structure is hexagonal and the outside face round.
Claim 5
Dependent Claim
21 words
A preform according to claim 1 wherein the outside face adjacent the bottom structure is hexagonal and the inside face round.
Claim 6
Dependent Claim
10 words
A preform according to claim 1 which is injection molded.
Claim 7
Dependent Claim
17 words
A preform according to claim 1 including an axially inwardly directed conical part on said bottom structure.
Claim 8
Dependent Claim
110 words
A plastic preform for forming blow molded plastic bottles which comprises: a neck portion defining an opening; a tubular body portion depending therefrom; and an integral bottom structure depending from the tubular body portion; said preform having an outside wall face and an inside wall face, with at least one of the inside wall face and the outside wall face of the tubular body portion adjacent the bottom structure and extending into said bottom structure having a plurality of flat faces, including at least one continuous, thickened portion in discrete locations on the outside wall face adjacent the bottom structure extending completely around the circumference of said outside wall face.
Claim 9
Dependent Claim
110 words
A plastic preform for forming blow molded plastic bottles which comprises: a neck portion defining an opening; a tubular body portion depending therefrom; and an integral bottom structure depending from the tubular body portion; said preform having an outside wall face and an inside wall face, with at least one of the inside wall face and the outside wall face of the tubular body portion adjacent the bottom structure and extending into said bottom structure having a plurality of flat faces, including at least one continuous, thickened portion in discrete locations on the outside wall face adjacent the bottom structure extending completely around the circumference of said outside wall face.
Claim 10
Dependent Claim
15 words
A preform according to claim 7 including at least two of said continuous thickened portions.
Claim 11
Dependent Claim
21 words
A preform according to claim 8 wherein a lower most of said discrete continuous thickened portions extends from the bottom structure.
Claim 12
Dependent Claim
92 words
A blow molded plastic container comprising: a neck portion defining an opening; a bottom portion; a tubular body portion interconnecting said neck and bottom portions, said bottom portion having an internal, axially inwardly directed conical part; said container having an inside wall face and an outside wall, with the inside wall face of said tubular body portion adjacent having circumferentially spaced, radially extending, continuous alterations in wall thickness with a regularly undulating cross-section across the entire circumference of the inside wall face wherein said alterations in wall thickness are progressive and gradual.
Claim 13
Dependent Claim
92 words
A blow molded plastic container comprising: a neck portion defining an opening; a bottom portion; a tubular body portion interconnecting said neck and bottom portions, said bottom portion having an internal, axially inwardly directed conical part; said container having an inside wall face and an outside wall, with the inside wall face of said tubular body portion adjacent having circumferentially spaced, radially extending, continuous alterations in wall thickness with a regularly undulating cross-section across the entire circumference of the inside wall face wherein said alterations in wall thickness are progressive and gradual.
Claim 14
Dependent Claim
21 words
A container according to claim 10 wherein said alterations in wall thickness extend over said bottom portion and said conical part.
Claim 15
Dependent Claim
16 words
A container according to claim 10 wherein said outside face adjacent said bottom portion is round.
Claim 16
Dependent Claim
23 words
A container according to claim 10 wherein said outside face adjacent said bottom portion is characterized by having a plurality of flat faces.
Claim 17
Dependent Claim
16 words
A container according to claim 13 wherein said plurality of flat faces form a hexagonal configuration.
Claim 18
Dependent Claim
13 words
A container according to claim 10 wherein said plastic is poly (ethylene terephthalate).
Claim 19
Dependent Claim
133 words
A blow molded plastic container comprising: a neck portion defining an opening; a bottom portion; a tubular body portion interconnecting said neck and bottom portions, said bottom portion having an internal, axially inwardly directed conical part; said container having an inside wall face and an outside wall, with the inside wall face of said tubular body portion adjacent said bottom portion and extending onto said bottom portion having circumferentially spaced, radially extending, continuous alterations in wall thickness with a regularly undulating cross-section across the entire circumference of the inside wall face wherein said alterations in wall thickness are progressive and gradual, including at least one continuous, thickened portion at discrete locations on at least one of the inside and outside wall face adjacent the bottom portion extending completely circumferentially around the periphery thereof.
Claim 20
Dependent Claim
133 words
A blow molded plastic container comprising: a neck portion defining an opening; a bottom portion; a tubular body portion interconnecting said neck and bottom portions, said bottom portion having an internal, axially inwardly directed conical part; said container having an inside wall face and an outside wall, with the inside wall face of said tubular body portion adjacent said bottom portion and extending onto said bottom portion having circumferentially spaced, radially extending, continuous alterations in wall thickness with a regularly undulating cross-section across the entire circumference of the inside wall face wherein said alterations in wall thickness are progressive and gradual, including at least one continuous, thickened portion at discrete locations on at least one of the inside and outside wall face adjacent the bottom portion extending completely circumferentially around the periphery thereof.
Claim 21
Dependent Claim
16 words
A container according to claim 16 including at least two of said spaced discrete thickened portions.
Claim 22
Dependent Claim
21 words
A container according to claim 26 wherein said at least one discrete thickened portion is located on the inside wall face.
Claim 23
Dependent Claim
18 words
A container according to claim 16 including at least one continuous, discrete thickness portion on said bottom portion.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-22 | 1992-05-23 | 1992-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-22 | 1996-05-23 | 1996-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-22 | 2000-05-23 | 2000-11-22 | $7700.00 | Window Closed / Lapsed |