US4732779A
Expired / Lapsed
US
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Fibrous material for composite materials, fiber-reinforced metal produced therefrom, and process for producing same
Assignee: Toyota Central R&D Labs Inc
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Filing: 1986-05-21
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Granted: 1988-03-22
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Expires: 2006-05-21
Abstract
Abstract The present invention relates to a fibrous material for composite materials, a fiber-reinforced metal produced therefrom, and a process for producing same. The fibrous material is composed of continuous filament fibers selected from heat resistant substances and short fibers, whiskers, or powders selected from heat resistant substances. The fiber-reinforced metal is composed of the fibrous material and a matrix metal, has a reduced anisotropy of mechanical properties, and can be made at my desired fiber volume ratio.
Inventors
- 👤 Shinichi Towata
- 👤 Senichi Yamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:26
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/4584; C04B20/00; C04B20/10; C04B20/1055; D; D01; D01F; D01F11/00; D01F11/10; D01F11/12; D01F11/121; D01F11/124; D01F11/125; D01F11/126; D01F11/127; D01F11/128; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2918; Y10T428/2933; Y10T428/2938; Y10T428/294; Y10T428/2964
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
95 words
A process for producing a fibrous material for composite materials, comprising: loosening a bundle of individual continuous fibers made of at least one heat resistant substance selected from the group consisting of ceramics, carbon, metals and intermetallic compounds, and dipping said bundle of individual continuous fibers in a bath containing a suspending medium and short fibers, whiskers, or powders made of at least one heat resistant substance selected from the group consisting of ceramics, carbon, metals and intermetallic compounds, thereby attaching said short fibers, whiskers, or powders to a surface of the individual continuous fibers.
Claim 2
Dependent Claim
95 words
A process for producing a fibrous material for composite materials, comprising: loosening a bundle of individual continuous fibers made of at least one heat resistant substance selected from the group consisting of ceramics, carbon, metals and intermetallic compounds, and dipping said bundle of individual continuous fibers in a bath containing a suspending medium and short fibers, whiskers, or powders made of at least one heat resistant substance selected from the group consisting of ceramics, carbon, metals and intermetallic compounds, thereby attaching said short fibers, whiskers, or powders to a surface of the individual continuous fibers.
Claim 3
Dependent Claim
14 words
The process of claim 1, wherein the suspending medium is subjected to ultrasonic vibration.
Claim 4
Dependent Claim
17 words
The process of claim 2, wherein the ultrasonic vibration has a frequency of 10 to 2000 kHz.
Claim 5
Dependent Claim
17 words
The process of claim 1, wherein the suspending medium is organic and is subjected to ultrasonic vibration.
Claim 6
Dependent Claim
12 words
The process of claim 4, wherein the suspending medium is ethyl alcohol.
Claim 7
Dependent Claim
22 words
The process of claim 1, wherein the bundle of continuous fibers is loosened by a blower before dipping in the suspending medium.
Claim 8
Dependent Claim
12 words
The process of claim 1, wherein the continuous fibers are carbon fibers.
Claim 9
Dependent Claim
12 words
The process of claim 1, wherein the continuous fibers are alumina fibers.
Claim 10
Dependent Claim
13 words
The process of claim 1, wherein the continuous fibers are silicon carbide fibers.
Claim 11
Dependent Claim
12 words
The process of claim 1, wherein the whiskers are silicon carbide whiskers.
Claim 12
Dependent Claim
12 words
The process of claim 1, wherein the whiskers are silicon nitride whiskers.
Claim 13
Dependent Claim
11 words
The process of claim 1, wherein the powders are alumina powders.
Claim 14
Dependent Claim
12 words
The process of claim 1, wherein the powders are silicon carbide powders.
Claim 15
Dependent Claim
15 words
The process of claim 1, wherein the concentration of whiskers is 0.5 to 30 g/liter.
Claim 16
Dependent Claim
15 words
The process of claim 1, wherein the concentration of powders is 0.5 to 30 g/liter.
Claim 17
Dependent Claim
29 words
The process of claim 1, wherein the ceramics are selected from the group consisting of silicon carbide, silicon nitride, alumina, silica, alumina-silica, zirconia, beryllia, boron carbide, and titanium carbide.
Claim 18
Dependent Claim
87 words
A process for producing fibrous material for composite materials, comprising: dipping individual continuous fibers or a bundle of individual continuous fibers made of at least one heat resistant substance selected from the group consisting of ceramics and carbon in a bath containing a suspending medium and short fibers, whiskers, or powders made of at least one heat resistant substance selected from the group consisting of ceramics, carbon, metals and intermetallic compounds, thereby attaching said short fibers, whiskers, or powders to a surface of the individual continuous fibers.
Claim 19
Dependent Claim
87 words
A process for producing fibrous material for composite materials, comprising: dipping individual continuous fibers or a bundle of individual continuous fibers made of at least one heat resistant substance selected from the group consisting of ceramics and carbon in a bath containing a suspending medium and short fibers, whiskers, or powders made of at least one heat resistant substance selected from the group consisting of ceramics, carbon, metals and intermetallic compounds, thereby attaching said short fibers, whiskers, or powders to a surface of the individual continuous fibers.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-22 | 1991-09-21 | 1992-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-22 | 1995-09-21 | 1996-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-22 | 1999-09-21 | 2000-03-22 | $7700.00 | Window Closed / Lapsed |