US5009952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulating wall for refrigerator devices
Assignee: Senoplast Klepsch and Co GmbH
•
Filing: 1990-08-23
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Granted: 1991-04-23
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Expires: 2010-08-23
Abstract
Abstract An insulating wall for refrigerator devices, wherein a polyurethane is foamed between an exterior metal sheet and a deep-drawn plastics material plate selected from a member of the group of polystyrole or acrylonitrile-butadiene-styrene, wherein the cell-gas of the polyurethane foam is carbon dioxide and wherein the plastics material plate comprises in its interior a blocking layer of 0.03-0.6 mm thickness formed of a copolymer of polyethylene and vinyl alcohol where the molar percent of polyethylene in the copolymer is in the range of 32-44.
Inventors
- 👤 Wilhelm Klepsch
- 👤 Dietmar Plobst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:03
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/18; B32B5/20; B29; B29C; B29C44/00; B29C44/02; B29C44/04; B29C44/06; B29C44/065; B29C44/34; B29C44/3402; B32B27/00; B32B27/06; B32B27/065; B32B27/08; B32B27/30; B32B27/306; B32B27/32; B32B27/40; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; F; F25; F25D; F25D23/00; F25D23/06; F25D23/062; F25D23/064; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0278; B32B2323/00; B32B2323/04; B32B2355/00; B32B2355/02; B32B2375/00; B32B2509/00; B32B2509/10; C08G2110/00; C08G2110/0083; C08G2170/00; C08G2170/60; Y; Y10; Y10S; Y10S220/00; Y10S220/902; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/24999; Y10T428/249991; Y10T428/249992
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
86 words
An insulating wall for refrigerator devices, wherein a polyurethane is foamed between an exterior metal sheet and a deep-drawn plastics material plate selected from a member of the group of polystyrole or acrylonitrile-butadiene-styrene, characterized in that the cell-gas of the polyurethane foam is carbon dioxoide and that the plastics material plate comprises in its interior a blocking layer of 0.03-0.6 mm thickness formed of a copolymer of polyethylene and vinyl alcohol where the molar percent of polyethylene in the copolymer is in the range of 32-44.
Claim 2
Dependent Claim
86 words
An insulating wall for refrigerator devices, wherein a polyurethane is foamed between an exterior metal sheet and a deep-drawn plastics material plate selected from a member of the group of polystyrole or acrylonitrile-butadiene-styrene, characterized in that the cell-gas of the polyurethane foam is carbon dioxoide and that the plastics material plate comprises in its interior a blocking layer of 0.03-0.6 mm thickness formed of a copolymer of polyethylene and vinyl alcohol where the molar percent of polyethylene in the copolymer is in the range of 32-44.
Claim 3
Dependent Claim
31 words
The plastics material plate according to claim 1, characterized in that the ethylene vinyl alcohol layer is connected to the adjacent polystyrole or acrylonitrile-butadiene-styrene via an adhesion agent containing vinyl acetate.
References Cited (Backward Citations)
US4196950A
Cited
US4707401A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-04-22 | 1994-10-22 | 1995-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-22 | 1998-10-22 | 1999-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-22 | 2002-10-22 | 2003-04-23 | $7700.00 | Window Closed / Lapsed |