US5488076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water ablative coating for drag reduction applications
Assignee: Infineon Technologies North America Corp
•
Filing: 1973-08-08
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Granted: 1996-01-30
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Expires: 1993-08-08
Abstract
Abstract A paint for application to the exterior surface of waterborne vehicles includes a high molecular weight water soluble polymer with drag reducing properties which time releases into the fluid boundary layer immediately adjacent the vehicle surface to reduce turbulence and promote laminar flow.
Inventors
- 👤 Robert F. Supcoe
- 👤 Francis J. Moran, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:35
CPC Classifications
C; C09; C09D; C09D167/00; C09D167/08; B; B05; B05D; B05D5/00; B05D5/08; B63; B63B; B63B1/00; B63B1/32; B63B1/34; C09D183/00; C09D183/10; C09D7/00; C09D7/40; C09D7/47; Y; Y02; Y02T; Y02T70/00; Y02T70/10
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
54 words
A water ablative paint for application to the exterior surface of a waterborne vehicle to reduce drag by reducing turbulence and promoting laminar flow in the boundary layer immediately adjacent the vehicle surface, said paint comprising: a drag reducing polymer; a carrier resin for suspending said drag reducing polymer; a drier; and a diluent.
Claim 2
Dependent Claim
54 words
A water ablative paint for application to the exterior surface of a waterborne vehicle to reduce drag by reducing turbulence and promoting laminar flow in the boundary layer immediately adjacent the vehicle surface, said paint comprising: a drag reducing polymer; a carrier resin for suspending said drag reducing polymer; a drier; and a diluent.
Claim 3
Dependent Claim
20 words
The drag reducing paint of claim 1, wherein: said drag reducing polymer is a high molecular weight water soluble polymer.
Claim 4
Dependent Claim
29 words
The drag reducing paint of claim 2, wherein: said high molecular weight soluble polymer is selected from the group consisting of polyacrylamide resin, polyethylene oxide resin, and guar gum.
Claim 5
Dependent Claim
45 words
The drag reducing paint of claim 1, wherein: said carrier resin is an air drying resin and suspends said soluble polymer in such a way that when said paint is applied to said surface and dried water penetration is allowed causing ablation of said polymer.
Claim 6
Dependent Claim
28 words
The drag reducing paint of claim 4, wherein: said carrier resin is selected from the group consisting of silicone alkyd resin, shellac resin and long oil alkyd resins.
Claim 7
Dependent Claim
13 words
The drag reducing paint of claim 1, wherein: said diluent is mineral spirits.
Claim 8
Dependent Claim
29 words
The drag reducing paint of claim 1, wherein: said drier is comprised of cobalt napthenate 50% by weight, manganese napthenate 25% by weight and lead napthenate 25% by weight.
Claim 9
Dependent Claim
10 words
The drag reducing paint of claim 1, including: a pigment.
Claim 10
Dependent Claim
13 words
The drag reducing paint of claim 7, wherein: said pigment is titanium dioxide.
Claim 11
Dependent Claim
34 words
The drag reducing paint of claim 2, wherein: said water soluble polymer has a thin coating of a water insoluble and hydrophobic substance to delay water interaction and to promote a uniform leach rate.
Claim 12
Dependent Claim
28 words
The drag reducing paint of claim 10, wherein: said water insoluble and hydrophobic substance coating said water soluble polymer is a mixture of tricalcium phosphate and fumed silica.
Claim 13
Dependent Claim
30 words
drag reducing paint of claim 10, including: an additive for reducing the adhesion of the carrier resin upon said surface to promote complete ablation of the paint from said surface.
Claim 14
Dependent Claim
29 words
The drag reducing paint of claim 12, wherein: said additive is an inert resin which disturbs the uniformity and continuity of adhesion of the carrier resin upon said surface.
Claim 15
Dependent Claim
16 words
The drag reducing paint of claim 13, wherein: said inert resin is finely divided polytetrafluorethylene resin.
Claim 16
Dependent Claim
15 words
The drag reducing paint of claim 12, wherein: said additive is a water soluble resin.
Claim 17
Dependent Claim
15 words
The drag reducing paint of claim 15, wherein: said water soluble resin is polyvinyl alcohol.
Claim 18
Dependent Claim
19 words
The drag reducing paint of claim 15, including: methanol for evenly distributing the polyvinyl alcohol among said carry resin.
Claim 19
Dependent Claim
17 words
The drag reducing paint of claim 17, including: a plasticizer for imparting an elasticity to the paint.
Claim 20
Dependent Claim
13 words
The drag reducing paint of claim 18, wherein: said plasticizer is triglycol diacetate.
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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) | 1999-01-29 | 1999-07-31 | 2000-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-29 | 2003-07-31 | 2004-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-29 | 2007-07-31 | 2008-01-30 | $7700.00 | Window Closed / Lapsed |