US5939160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low odor permeable hose
Assignee: Dometic Corp
•
Filing: 1997-02-25
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Granted: 1999-08-17
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Expires: 2017-02-25
Abstract
Abstract Flexible PVC hose can be used with toilet systems in vehicles, such as boats, recreational vehicles, etc, or at pumpout stations. The hose includes about 40-55% by weight PVC resin, and at least 10% by weight of an EVA high molecular weight plasticizer. The hose also typically includes a low molecular weight plasticizer, stabilizer, lubricant, filler (such as 5-20% by weight dense filler like calcium carbonate), and pigment. The hose typically will not fail (that is will not transmit odor) for the life of the toilet system, or mechanical life of the hose.
Inventors
- 👤 Sally A. Kline
- 👤 William J. Friedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:23
CPC Classifications
B; B60; B60R; B60R15/00; B60R15/04; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1379; Y10T428/1386; Y10T428/139; Y10T428/1393
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
72 words
A flexible hose capable of being used for the transfer of sewage comprising: an unreinforced tubular body capable of bending to form a radius and comprising: at least about 40% by weight PVC resin; at least about 10% by weight ethylene-vinyl-acetate co-polymer; and low molecular weight plasticizer, which hose has poor carbon disulfide solubility, so that said hose will not fail the SeaLand Sanitation Hose Permeability Test for at least eight days.
Claim 2
Dependent Claim
72 words
A flexible hose capable of being used for the transfer of sewage comprising: an unreinforced tubular body capable of bending to form a radius and comprising: at least about 40% by weight PVC resin; at least about 10% by weight ethylene-vinyl-acetate co-polymer; and low molecular weight plasticizer, which hose has poor carbon disulfide solubility, so that said hose will not fail the SeaLand Sanitation Hose Permeability Test for at least eight days.
Claim 3
Dependent Claim
28 words
A flexible hose as recited in claim 1 wherein said hose comprises at least about 30% by weight ethylene-vinyl-acetate copolymer, and at least 2% low molecular weight plasticizer.
Claim 4
Dependent Claim
19 words
A flexible hose as recited in claim 1 wherein said hose also contains a stabilizer, lubricant, filler and pigment.
Claim 5
Dependent Claim
18 words
A flexible hose as recited in claim 1 wherein said hose also contains 5-20% by weight dense filler.
Claim 6
Dependent Claim
44 words
A flexible hose as recited in claim 1 wherein said hose consists essentially of, by weight, about 40-55% PVC resin, about 30-40% ethylene-vinyl-acetate copolymer, about 2-30% low molecular weight plasticizer, about 1-20% filler, about 0.5-5% each of stabilizer, and pigment, and about 0.05-0.5% lubricant.
Claim 7
Dependent Claim
50 words
A flexible hose as recited in claim 1 wherein said hose comprises, by weight, at least about 40% PVC resin, at least about 30% ethylene-vinyl-acetate copolymer, at least about 2% low molecular weight plasticizer, at least about 1% filler, at least about 0.5% stabilizer, and at least about 0.05% lubricant.
Claim 8
Dependent Claim
37 words
A flexible hose as recited in claim 6 wherein said low molecular weight plasticizer comprises Di-octyl phthalate, wherein said filler comprises calcium carbonate, wherein said stabilizer comprises barium zinc stabilizer, and wherein said lubricant comprises stearic acid.
Claim 9
Dependent Claim
52 words
A flexible hose as recited in claim 6 wherein said low molecular weight plasticizer comprises about 5-10% Di-octyl phthalate, wherein said filler comprises about 5-15% calcium carbonate, wherein said stabilizer comprises about 1-2% barium zinc stabilizer, wherein said lubricant comprises about 0.1-0.2% stearic acid, and further comprising about 1-2% titanium dioxide pigment.
Claim 10
Dependent Claim
28 words
A flexible hose as recited in claim 6 comprising about 5-10% low molecular weight plasticizer, about 5-15% filler, about 1-2% stabilizer, about 0.1-0.2% lubricant, and about 1-2% pigment.
Claim 11
Dependent Claim
28 words
A flexible hose as recited in claim 2 further comprising, by weight, about 5-10% low molecular weight plasticizer, about 5-15% filler, about 1-2% stabilizer, and about 0.1-0.2% lubricant.
Claim 12
Dependent Claim
22 words
A flexible hose as recited in claim 1 connected to at least one of a toilet or tank mounted in a vehicle.
Claim 13
Dependent Claim
13 words
A flexible hose as recited in claim 1 connected to a pumpout system.
Claim 14
Dependent Claim
25 words
A flexible hose as recited in claim 1 having a wall thickness of between about 0.25-0.65 cm, and an interior diameter of about 2.5-7.5 cm.
Claim 15
Dependent Claim
25 words
A flexible hose as recited in claim 2 having a wall thickness of between about 0.25-0.65 cm, and an interior diameter of about 2.5-7.5 cm.
Claim 16
Dependent Claim
74 words
A flexible hose capable of being used for the transfer of sewage comprising: a tubular body capable of bending to form a radius and comprising: at least about 40% by weight PVC resin; at least about 30% by weight ethylene-vinyl-acetate copolymer; at least about 2% low molecular weight plasticizer; and which has poor carbon disulfide solubility, so that said hose will not fail the SeaLand Sanitation Hose Permeability Test for at least eight days.
Claim 17
Dependent Claim
74 words
A flexible hose capable of being used for the transfer of sewage comprising: a tubular body capable of bending to form a radius and comprising: at least about 40% by weight PVC resin; at least about 30% by weight ethylene-vinyl-acetate copolymer; at least about 2% low molecular weight plasticizer; and which has poor carbon disulfide solubility, so that said hose will not fail the SeaLand Sanitation Hose Permeability Test for at least eight days.
Claim 18
Dependent Claim
25 words
A flexible hose as recited in claim 15 having a wall thickness of between about 0.25-0.65 cm, and an interior diameter of about 2.5-7.5 cm.
Claim 19
Dependent Claim
22 words
A flexible hose as recited in claim 15 connected to at least one of a toilet or tank mounted in a vehicle.
Claim 20
Dependent Claim
25 words
A flexible hose as recited in claim 17 wherein said hose will not fail the SeaLand Sanitation Hose Permeability Test for at least thirteen days.
Claim 21
Dependent Claim
75 words
A flexible hose capable of being used for the transfer of sewage comprising: an unreinforced tubular body capable of bending to form a radius and comprising: at least about 40% by weight PVC resin; at least about 30% by weight ethylene-vinyl-acetate copolymer; and at least 2% low molecular weight plasticizer; said hose having poor carbon disulfide solubility, so that said hose will not fail the SeaLand Sanitation Hose Permeability Test for at least thirteen days.
Claim 22
Dependent Claim
75 words
A flexible hose capable of being used for the transfer of sewage comprising: an unreinforced tubular body capable of bending to form a radius and comprising: at least about 40% by weight PVC resin; at least about 30% by weight ethylene-vinyl-acetate copolymer; and at least 2% low molecular weight plasticizer; said hose having poor carbon disulfide solubility, so that said hose will not fail the SeaLand Sanitation Hose Permeability Test for at least thirteen days.
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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) | 2002-08-16 | 2003-02-15 | 2003-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-08-16 | 2007-02-15 | 2007-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-08-16 | 2011-02-15 | 2011-08-17 | $7700.00 | Window Closed / Lapsed |