US6039084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expanded fluoropolymer tubular structure, hose assembly and method for making same
Assignee: Kongsberg Automotive ASA
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Filing: 1997-06-13
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Granted: 2000-03-21
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Expires: 2017-06-13
Abstract
Abstract A tubular structure (10) including an expanded fluoropolymer material having an outer surface (12), an inner surface (14), and a wall (16) therebetween. The wall (16) defines a channel (18). A hose assembly (100) includes a tubular inner liner (110) formed of the expanded fluorocarbon polymeric material having an outer surface (112), an inner surface (114), and a wall (116) therebetween defining a channel (118). The hose assembly (110) further includes at least one outer liner (121) disposed about the outer surface (112) of the tubular inner liner (110). A method of making a tubular structure (10) formed of the expanded fluoropolymer material includes the steps of extruding a fluoropolymer tubular structure (10) having an outer surface (12), an inner surface (14), and a wall (16) therebetween defining a channel (18) on an extruder having at least one barrel, at least one screw, at least one mandrel, and at least one die. The method further includes the steps of applying a vacuum to the outer surface (12) to prevent the tubular structure (10) from collapsing and polymerizing the tubular structure (10). A method for constructing a hose assembly (100) includes the steps of extruding a fluoropolymer tubular inner liner (110) and disposing at least one outer liner (121) about the tubular inner liner (110).
Inventors
- 👤 Norman S. Martucci
- 👤 Boney A. Mathew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:26
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/04; F16L11/08; F16L11/085; F16L11/10; F16L11/12; F16L11/127
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
58 words
A tubular structure (10) comprising an expanded fluoropolymer material having an outer surface (12), an inner surface (14), and a wall (16) therebetween defining a channel (18); wherein said fluoropolymer material includes a melt extrudable fluorocarbon polymeric material; and wherein said melt extrudable fluorocarbon polymeric material includes perfluorinated ethylene-propropylene, or perfluoralkoxy fluorocarbon resin, or a polymer of ethylenetetrafluoroethylene.
Claim 2
Dependent Claim
58 words
A tubular structure (10) comprising an expanded fluoropolymer material having an outer surface (12), an inner surface (14), and a wall (16) therebetween defining a channel (18); wherein said fluoropolymer material includes a melt extrudable fluorocarbon polymeric material; and wherein said melt extrudable fluorocarbon polymeric material includes perfluorinated ethylene-propropylene, or perfluoralkoxy fluorocarbon resin, or a polymer of ethylenetetrafluoroethylene.
Claim 3
Dependent Claim
21 words
A tubular structure (10) according to claim 1, wherein said expanded fluoropolymer material is comprised of a plurality of closed cells.
Claim 4
Dependent Claim
24 words
A tubular structure (10) according to claim 2, wherein said plurality of closed cells comprise between approximately 5%-85% percent of said tubular structure (10).
Claim 5
Dependent Claim
24 words
A tubular structure (10) according to claim 3, wherein said plurality of closed cells comprise between approximately 20%-50% percent of said tubular structure (10).
Claim 6
Dependent Claim
23 words
A tubular structure (10) according to claim 1, wherein said outer surface (12), said inner surface (14) or both include a skin (20).
Claim 7
Dependent Claim
18 words
A tubular structure (10) according to claim 5, wherein said skin (20) is substantially free of closed cells.
Claim 8
Dependent Claim
18 words
A tubular structure (10) according to claim 1, wherein said tubular structure (10) has a substantially circular cross-section.
Claim 9
Dependent Claim
77 words
A hose assembly (100) comprising: a tubular inner liner (110) formed of an expanded fluoropolymer material having an outer surface (112), an inner surface (114), and wall (116) therebetween defining a channel (118), and at least one outer liner (121) disposed about said outer surface (112); wherein said fluoropolymer material includes a melt extrudable fluorocarbon polymeric material; and wherein said melt extrudable fluorocarbon polymeric material includes perfluorinated ethylene-propropylene, or perfluoralkoxy fluorocarbon resin, or a polymer of ethylenetetrafluoroethylene.
Claim 10
Dependent Claim
77 words
A hose assembly (100) comprising: a tubular inner liner (110) formed of an expanded fluoropolymer material having an outer surface (112), an inner surface (114), and wall (116) therebetween defining a channel (118), and at least one outer liner (121) disposed about said outer surface (112); wherein said fluoropolymer material includes a melt extrudable fluorocarbon polymeric material; and wherein said melt extrudable fluorocarbon polymeric material includes perfluorinated ethylene-propropylene, or perfluoralkoxy fluorocarbon resin, or a polymer of ethylenetetrafluoroethylene.
Claim 11
Dependent Claim
24 words
A hose assembly (100) as set forth in claim 8, wherein said outer liner (121) includes a reinforcing layer (122) having gaps extending therethrough.
Claim 12
Dependent Claim
47 words
A hose assembly (100) as set forth in claim 9, wherein said reinforcing layer (122) has an inner and an outer periphery, said inner liner (110) extending from said inner periphery of said reinforcing layer (122) radially outwardly toward said outer periphery of said reinforcing layer (122).
Claim 13
Dependent Claim
22 words
A hose assembly (100) as set forth in claim 9, wherein said reinforcing layer (122) includes a tightly wound non-metallic material (124).
Claim 14
Dependent Claim
19 words
A hose assembly (100) as set forth in claim 11, wherein said non-metallic material (124) includes braided glass fiber.
Claim 15
Dependent Claim
21 words
A hose assembly (100) as set forth in claim 9, wherein said reinforcing layer (122) includes a braided metallic material (126).
Claim 16
Dependent Claim
18 words
A hose assembly (100) as set forth in claim 13, wherein said metallic material (126) includes stainless steel.
Claim 17
Dependent Claim
19 words
A hose assembly (100) as set forth in claim 8, wherein said outer liner (121) includes a polymeric material.
Claim 18
Dependent Claim
17 words
A hose assembly (100) as set forth in claim 15, wherein said polymeric material is a thermoplastic.
Claim 19
Dependent Claim
23 words
A hose assembly (100) as set forth in claim 16, wherein said thermoplastic includes polyamides, fluoropolymers, polyvinyls, polyesters, polyurethanes, PPS, and aliphatic polyketones.
Claim 20
Dependent Claim
18 words
A hose assembly (100) as set forth in claim 17, wherein said thermoplastic includes reinforcing materials disposed therein.
Claim 21
Dependent Claim
25 words
A hose assembly (100) as set forth in claim 17, wherein said polyamides include polyamide 6; polyamide 6,6; polyamide 11; polyamide 12, or mixtures thereof.
Claim 22
Dependent Claim
15 words
A hose assembly (100) as set forth in claim 16, wherein said thermoplastic is expanded.
Claim 23
Dependent Claim
42 words
A hose assembly (100) as set forth in claim 8, wherein said inner liner (110) includes an integral conductive means (128) coextensive with the length of said inner liner (110) for conducting electrical charges along the length of said inner liner (110).
Claim 24
Dependent Claim
19 words
A hose assembly (110) as set forth in claim 21, wherein said integral conductive means (128) includes carbon black.
Claim 25
Dependent Claim
29 words
A hose assembly (100) as set forth in claim 8, further including coupling means (130) for interconnecting the ends of said hose assembly (100) to a flow of fluid.
References Cited (Backward Citations)
US35527A
Cited
US5613524A
Cited
US5124878A
Cited
US5142782A
Cited
USRE35527E
Cited
US5192476A
Cited
US5743304A
Cited
US5601893A
Cited
US5706865A
Cited
US5566720A
Cited
US5655572A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-03-21 | 2003-09-20 | 2004-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-03-21 | 2007-09-20 | 2008-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-03-21 | 2011-09-20 | 2012-03-21 | $7700.00 | Window Closed / Lapsed |