Use of high modulus, impact resistant foams for structural components
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United States of America Patent
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Apr 26, 2005
Issued Date -
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app pub date -
Feb 13, 2003
filing date -
Oct 5, 2001
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Abstract
The present invention provides tough, high modulus, low density thermoset polyurethane compositions which are useful in general as, for example, cast structural materials and in a preferred embodiment can be cured directly onto an aircraft engine fan blade, thereby providing a lighter blade, without concomitant loss in structural integrity or blade performance due to, for example, resistance to foreign object impacts and fuel efficiency. In a preferred embodiment, the composition is comprised of bis-amine compounds reacted with isocyanate-functional polyether polymers in the presence of hollow polymeric microspheres. The thermoset polymer compositions are formed by casting into a mold which is formed by a cavity within the metallic or composite fan blade or guide vane in the form of a pocket and a removable caul sheet. After the elastomeric polyurethane foam is injected through at least one injector port into the mold, the foam is cured.
First Claim
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- GENERAL ELECTRIC COMPANY
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Carnahan, James Claude | Niskayuna, NY | 25 | 169 |
Finn, Scott Roger | Niskayuna, NY | 36 | 684 |
Flanagan, Kevin Warner | Albany, NY | 31 | 398 |
Lin, Wendy Wen-Ling | Niskayuna, NY | 59 | 869 |
Stevenson, Joseph Timothy | Amelia, OH | 7 | 215 |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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