Patent US4892693A successfully refreshed from Google Patents.
US4892693A
Expired / Lapsed
US
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Method of making filament growth composite
Assignee: Alcoa Corp
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Filing: 1987-07-24
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Granted: 1990-01-09
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Expires: 2007-07-24
Abstract
Abstract A composite and a process for forming it are provided, said process comprising providing a substrate bearing crystalline and preferably single crystal filaments as growths on the substrate and forming a solid matrix encompassing the filaments. The composites are useful for aircraft, boat and auto skins and structural members.
Inventors
- 👤 Anthony J. Perrotta
- 👤 Donald K. Grubbs
- 👤 William H. Quayle
- 👤 Thomas B. Gurganus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:25
CPC Classifications
C; C30; C30B; C30B25/00; C30B25/005; C04; C04B; C04B35/00; C04B35/622; C04B35/62227; C04B35/62272; C04B35/62286; C04B35/71; C04B35/74; C04B35/76; C04B35/78; C04B35/80; C22; C22C; C22C47/00; C22C47/02; C22C47/025; C22C47/04; C22C47/08; C22C47/12; C22C47/14; C22C47/20; C30B29/00; C30B29/02; C30B29/10; C30B29/36; C30B29/38; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/38; C04B2235/3852; C04B2235/3865; C04B2235/40; C04B2235/402; C22C2200/00; C22C49/00; C22C49/02; C22C49/04; C22C49/06; C22C49/10; C22C49/11; C22C49/14
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
42 words
A process for forming a novel composite comprising providing a substrate bearing crystalline filaments as growths on the substrate and forming a solid matrix encompassing the filaments, wherein the filaments are substantially uni-directional in a direction other than perpendicular to the substrate.
Claim 2
Dependent Claim
42 words
A process for forming a novel composite comprising providing a substrate bearing crystalline filaments as growths on the substrate and forming a solid matrix encompassing the filaments, wherein the filaments are substantially uni-directional in a direction other than perpendicular to the substrate.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein the filaments are substantially single crystal.
Claim 4
Dependent Claim
11 words
The process of claim 1 wherein the filaments are substantially polycrystalline.
Claim 5
Dependent Claim
14 words
The process of claim I wherein substrate is removed following the step of forming.
Claim 6
Dependent Claim
13 words
The process of claim 1 wherein the substrate becomes part of the matrix.
Claim 7
Dependent Claim
18 words
The process of claim 1 wherein the filaments comprise from between about 10 and about 50% by volume.
Claim 8
Dependent Claim
18 words
The process of claim 1 wherein a plurality of the filaments have an aspect ratio greater than 100:1.
Claim 9
Dependent Claim
10 words
The process of claim 1 wherein the filaments are coated.
Claim 10
Dependent Claim
78 words
A continuous process for forming a novel composite comprising continuously feeding a suitable substrate to a filament growing station and forming crystalline filaments on said substrate, passing the resultant filament laden substrate to a matrix dispenser station and treating said filament laden substrate with a liquid, normally molten, matrix material, allowing the resultant coated product to solidify and continuously recovering the solid product wherein the filaments are substantially uni-directional in a direction other than perpendicular to the substrate.
Claim 11
Dependent Claim
78 words
A continuous process for forming a novel composite comprising continuously feeding a suitable substrate to a filament growing station and forming crystalline filaments on said substrate, passing the resultant filament laden substrate to a matrix dispenser station and treating said filament laden substrate with a liquid, normally molten, matrix material, allowing the resultant coated product to solidify and continuously recovering the solid product wherein the filaments are substantially uni-directional in a direction other than perpendicular to the substrate.
Claim 12
Dependent Claim
11 words
The process of claim 9 wherein single crystal filaments are formed.
Claim 13
Dependent Claim
15 words
The process of claim 9 wherein the filaments are grown by the Gas Phase Method.
Claim 14
Dependent Claim
14 words
The process of claim 9 wherein the filaments are grown by the VLS method.
Claim 15
Dependent Claim
15 words
The process of claim 9 wherein the filaments are grown by the membrane-epitaxial growth method.
Claim 16
Dependent Claim
14 words
The process of claim 9 wherein substrate is removed following the step of allowing.
Claim 17
Dependent Claim
25 words
The process of claim 9 wherein the filaments are random as formed but are in a substantially uni-directional manner after solidification of the matrix material.
Claim 18
Dependent Claim
33 words
A process of improving the properties of a composite comprising a substrate bearing filaments as growths on the substrate, said process comprising aligning a plurality of said filaments in substantially the same direction.
Claim 19
Dependent Claim
33 words
A process of improving the properties of a composite comprising a substrate bearing filaments as growths on the substrate, said process comprising aligning a plurality of said filaments in substantially the same direction.
Claim 20
Dependent Claim
12 words
The process of claim 16 wherein the filaments are substantially single crystal.
Claim 21
Dependent Claim
27 words
The process of claim 16 wherein the aligning is accomplished by means of one or more rollers passed over said filaments to compress and orient said filaments.
Claim 22
Dependent Claim
18 words
The process of claim 16 wherein a matrix is formed around said filaments prior to aligning said filaments.
Claim 23
Dependent Claim
26 words
The process of claim 16 wherein the substrate submitted to the step of aligning is a substrate bearing crystalline ransom filaments as growths on the substrate.
Claim 24
Dependent Claim
27 words
The process of claim 20 wherein the aligning is accomplished by means of one or more rollers passed over said filaments to compress and orient said filaments.
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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) | 1993-01-08 | 1993-07-10 | 1994-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-08 | 1997-07-10 | 1998-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-08 | 2001-07-10 | 2002-01-09 | $7700.00 | Window Closed / Lapsed |