US5012950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic container for liquids or gases
Assignee: Individual
•
Filing: 1989-04-27
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Granted: 1991-05-07
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Expires: 2009-04-27
Abstract
Abstract The invention relates to plastic containers for liquids and gases, which are characterized in that they have a seamless inner layer of modified PPO or PP and a glass fiber layer following it, laid on geodesic lines and provided partly or completely with reaction resins or thermoplastics as well as an optional outer coating of hardenable reaction resins or thermoplastics. In regions of particular strain, the plastic containers may have, between the liner and the glass fiber layer comprising long fibers, an intermediate layer of thermoplastics or reaction resins not having containing monomeric styrene and with approximately 20 to 40% by weight of glass fibers in the form of short fibers.
Inventors
- 👤 Holger Knappe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:02
CPC Classifications
B; B32; B32B; B32B1/00; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/08; B29C70/086; B32B27/00; B32B27/06; B32B27/08; B32B27/12; B32B27/32; F; F17; F17C; F17C1/00; F17C1/16; B29C45/00; B29C53/00; B29C53/56; B29C53/58; B29C65/00; B29C65/02; B29C65/06; B29C65/0672; B29C65/18; B29C65/20; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2023/10; B29K2023/12; B29K2027/00; B29K2027/12; B29K2027/18; B29K2071/00; B29K2071/12; B29K2101/00; B29K2101/12; B29K2105/00; B29K2105/06; B29K2105/08; B29K2309/00; B29K2309/08; B29L; B29L2009/00; B29L2031/00; B29L2031/712; B29L2031/7154; B29L2031/7156; B32B2262/00; B32B2262/10; B32B2262/101; B32B2323/00; B32B2323/10; B32B2439/00; F17C2203/00; F17C2203/06; F17C2203/0602; F17C2203/0604; F17C2203/0612; F17C2203/0614; F17C2203/0619; F17C2203/0634; F17C2203/0658; F17C2203/0663; F17C2203/0673; F17C2209/00; F17C2209/21; F17C2209/2154; F17C2260/00; F17C2260/01; F17C2260/011; F17C2260/03; F17C2260/035; F17C2260/036; F17C2270/00; F17C2270/07; F17C2270/0745
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
60 words
A plastic container comprising a seamless liner, as an inner layer, of modified polyphenylene oxide and an outer glass fiber layer wound on approximately geodesic lines on said liner, wherein said outer layer has a coating of thermoplastics or reaction resins, wherein said reaction resins are at least one of polyester resins, or unsaturated polyester resins not containing monomeric styrene.
Claim 2
Dependent Claim
60 words
A plastic container comprising a seamless liner, as an inner layer, of modified polyphenylene oxide and an outer glass fiber layer wound on approximately geodesic lines on said liner, wherein said outer layer has a coating of thermoplastics or reaction resins, wherein said reaction resins are at least one of polyester resins, or unsaturated polyester resins not containing monomeric styrene.
Claim 3
Dependent Claim
64 words
A plastic container comprising a seamless liner, as an inner layer, of modified polyphenylene oxide said inner layer wrapped with an outer layer of glass fibers wherein the outer layers of glass fibers are spaced apart from said seamless inner layer and contain thermoplastics or hardenable reaction resins, wherein said hardenable reaction resins are at least one of polyester resins or unsaturated polyester resins.
Claim 4
Dependent Claim
64 words
A plastic container comprising a seamless liner, as an inner layer, of modified polyphenylene oxide said inner layer wrapped with an outer layer of glass fibers wherein the outer layers of glass fibers are spaced apart from said seamless inner layer and contain thermoplastics or hardenable reaction resins, wherein said hardenable reaction resins are at least one of polyester resins or unsaturated polyester resins.
Claim 5
Dependent Claim
26 words
A plastic container of claims 1 or 2 further including a layer of cross-wound winding intermediate said inner seamless layer and said outer glass fiber layer.
Claim 6
Dependent Claim
21 words
A plastic container of claims 1 or 2 further including a layer of cross-wound winding covering said outer glass fiber layer.
Claim 7
Dependent Claim
69 words
A plastic container comprising a seamless liner, as an inner layer, of modified polyphenylene oxide or polypropylene, and an outer glass fiber layer wound on approximately geodesic lines on said liner, wherein said outer layer has a coating of thermoplastics or reaction resins not containing monomeric styrene, and said seamless liner comprising at least one layer comprised of modified polyphenylene oxide or polypropylene, and at least one other thermoplastic.
Claim 8
Dependent Claim
69 words
A plastic container comprising a seamless liner, as an inner layer, of modified polyphenylene oxide or polypropylene, and an outer glass fiber layer wound on approximately geodesic lines on said liner, wherein said outer layer has a coating of thermoplastics or reaction resins not containing monomeric styrene, and said seamless liner comprising at least one layer comprised of modified polyphenylene oxide or polypropylene, and at least one other thermoplastic.
Claim 9
Dependent Claim
69 words
A plastic container comprising a seamless liner, as an inner layer, of modified polyphenylene oxide or polypropylene, said liner wrapped with an outer layer of glass fibers wherein the outer layers of glass fibers are spaced apart from said liner and contain thermoplastics are hardenable reaction resins, and said seamless liner comprising at least one layer comprised of modified polyphenylene oxide, or polypropylene, and at least one other thermoplastic.
Claim 10
Dependent Claim
69 words
A plastic container comprising a seamless liner, as an inner layer, of modified polyphenylene oxide or polypropylene, said liner wrapped with an outer layer of glass fibers wherein the outer layers of glass fibers are spaced apart from said liner and contain thermoplastics are hardenable reaction resins, and said seamless liner comprising at least one layer comprised of modified polyphenylene oxide, or polypropylene, and at least one other thermoplastic.
Claim 11
Dependent Claim
20 words
A plastic container of claim 5 or 6 wherein said thermoplastic is at least one of polytetrafluoroethylene, polychlorotrifluoroethylene or polyimide.
Claim 12
Dependent Claim
95 words
A plastic container comprising a seamless liner, as an inner layer, of modified polyphenylene oxide and an outer glass fiber layer wound on approximately geodesic lines on said liner, wherein said outer layer has a coating of thermoplastics or reaction resins and said reaction resins are at least one of polyester resins, or unsaturated polyester resins not containing monomeric styrene, and further including a layer, intermediate said liner and said outer glass fiber layer, of thermoplastics or reaction resins not containing monomeric styrene and containing approximately 20 to 40% by weight of short glass fibers.
Claim 13
Dependent Claim
95 words
A plastic container comprising a seamless liner, as an inner layer, of modified polyphenylene oxide and an outer glass fiber layer wound on approximately geodesic lines on said liner, wherein said outer layer has a coating of thermoplastics or reaction resins and said reaction resins are at least one of polyester resins, or unsaturated polyester resins not containing monomeric styrene, and further including a layer, intermediate said liner and said outer glass fiber layer, of thermoplastics or reaction resins not containing monomeric styrene and containing approximately 20 to 40% by weight of short glass fibers.
Claim 14
Dependent Claim
84 words
A plastic container comprising a seamless liner, as an inner layer, of modified polyphenylene oxide said inner layer wrapped with an outer layer of glass fibers wherein the outer layers of glass fibers are spaced apart from said seamless inner layer and contain thermoplastics or hardenable reaction resins, and further including a layer, intermediate said liner and said outer glass layer, of polyester resins or unsaturated polyester resins not containing monomeric styrene and containing approximately 20 to 40% by weight of short glass fibers.
Claim 15
Dependent Claim
84 words
A plastic container comprising a seamless liner, as an inner layer, of modified polyphenylene oxide said inner layer wrapped with an outer layer of glass fibers wherein the outer layers of glass fibers are spaced apart from said seamless inner layer and contain thermoplastics or hardenable reaction resins, and further including a layer, intermediate said liner and said outer glass layer, of polyester resins or unsaturated polyester resins not containing monomeric styrene and containing approximately 20 to 40% by weight of short glass fibers.
Claim 16
Dependent Claim
57 words
A plastic container comprising a seamless liner, as an inner layer, of modified polyphenylene oxide or polypropylene, and an outer glass fiber layer wound on approximately geodesic lines on said liner, wherein said outer layer has a coating comprising polypropylene or modified polyphenylene oxide foam saturated glass fiber wherein said outer layer does not contain monomeric styrene.
Claim 17
Dependent Claim
57 words
A plastic container comprising a seamless liner, as an inner layer, of modified polyphenylene oxide or polypropylene, and an outer glass fiber layer wound on approximately geodesic lines on said liner, wherein said outer layer has a coating comprising polypropylene or modified polyphenylene oxide foam saturated glass fiber wherein said outer layer does not contain monomeric styrene.
Claim 18
Dependent Claim
54 words
A plastic container comprising a seamless liner, as an inner layer, of modified polyphenylene oxide or polypropylene, said inner layer wrapped with an outer layer of glass fibers wherein the outer layer of glass fibers are spaced apart from said seamless inner layer and contain polypropylene or modified polyphenylene oxide foam saturated glass fiber.
Claim 19
Dependent Claim
54 words
A plastic container comprising a seamless liner, as an inner layer, of modified polyphenylene oxide or polypropylene, said inner layer wrapped with an outer layer of glass fibers wherein the outer layer of glass fibers are spaced apart from said seamless inner layer and contain polypropylene or modified polyphenylene oxide foam saturated glass fiber.
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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) | 1994-05-06 | 1994-11-05 | 1995-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-06 | 1998-11-05 | 1999-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-06 | 2002-11-05 | 2003-05-07 | $7700.00 | Window Closed / Lapsed |