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US4961990A
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Fibrous material for composite materials, fiber-reinforced composite materials produced therefrom, and process for producing same
Assignee: Toyota Central R&D Labs Inc
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Filing: 1987-06-15
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Granted: 1990-10-09
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Expires: 2007-06-15
Abstract
Abstract A fiber and fibrous material for producing composite materials, fiber-reinforced metals, fiber-reinforced plastics and fiber-reinforced ceramics, in which short fibers, whiskers or powders made of heat resistant material are deposited on continuous fibers made of heat resistant material. The composite materials, such as fiber-reinforced metals, plastics, and ceramics, contain the fibrous material in a matrix, and have improved control of the fiber volume ratio and mechanical characteristics. Processes for producing the fiber, fibrous materials and composite materials are also disclosed.
Inventors
- 👤 Senichi Yamada
- 👤 Shinichi Towata
- 👤 Hajime Ikuno
- 👤 Takemi Yamamura
- 👤 Toshihiro Ishikawa
- 👤 Masaki Shibuya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:28
CPC Classifications
C; C22; C22C; C22C47/00; C22C47/02; C22C47/06; B; B32; B32B; B32B18/00; C04; C04B; C04B35/00; C04B35/01; C04B35/03; C04B35/04; C04B35/053; C04B35/10; C04B35/111; C04B35/117; C04B35/14; C04B35/16; C04B35/18; C04B35/185; C04B35/195; C04B35/515; C04B35/52; C04B35/522; C04B35/56; C04B35/5607; C04B35/5611; C04B35/5622; C04B35/5626; C04B35/563; C04B35/565; C04B35/58; C04B35/58007; C04B35/58014; C04B35/58028; C04B35/581; C04B35/583; C04B35/584; C04B35/593; C04B35/622; C04B35/62227; C04B35/62272; C04B35/62277; C04B35/62281; C04B35/626; C04B35/628; C04B35/62844; C04B35/62857; C04B35/6286; C04B35/62863; C04B35/62892; C04B35/62894; C04B35/63; C04B35/6303; C04B35/64; C04B35/645; C04B35/71; C04B35/78; C04B35/80; C08; C08K; C08K13/00; C08K13/04; C22C47/062; C22C47/068; D; D01; D01F; D01F9/00; D01F9/08; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/32; C04B2235/3217; C04B2235/3224; C04B2235/3225; C04B2235/3231; C04B2235/3232; C04B2235/3244; C04B2235/38; C04B2235/3817; C04B2235/3826; C04B2235/3852; C04B2235/3865; C04B2235/3873; C04B2235/44; C04B2235/441; C04B2235/48; C04B2235/483; C04B2235/50; C04B2235/52; C04B2235/5208; C04B2235/5216; C04B2235/522; C04B2235/5224; C04B2235/524; C04B2235/5244; C04B2235/5248; C04B2235/526; C04B2235/5264; C04B2235/5276; C04B2235/54; C04B2235/5418; C04B2235/5436; C04B2235/5445; C04B2235/60; C04B2235/616; C04B2235/70; C04B2235/80; C04B2235/96; C04B2237/00; C04B2237/30; C04B2237/32; C04B2237/36; C04B2237/368; C04B2237/38; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10T; Y10T428/00; Y10T428/25; Y10T428/29; Y10T428/2913; Y10T428/2918; Y10T428/2982; Y10T428/30; Y10T442/00; Y10T442/30; Y10T442/3049
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
88 words
A fibrous material for a composite material comprising a bundle of continuous fibers or a woven fabric comprising a plurality of said bundles of continuous fibers, said continuous fibers comprising at least one material selected from the group consisting of a ceramic, carbon and a metal, in which fine particles, and at least one of short fibers and whiskers each comprising at least one heat resistant material selected from the group consisting of a ceramic, carbon and a metal, are contacted with the surface of said continuous fibers.
Claim 2
Dependent Claim
88 words
A fibrous material for a composite material comprising a bundle of continuous fibers or a woven fabric comprising a plurality of said bundles of continuous fibers, said continuous fibers comprising at least one material selected from the group consisting of a ceramic, carbon and a metal, in which fine particles, and at least one of short fibers and whiskers each comprising at least one heat resistant material selected from the group consisting of a ceramic, carbon and a metal, are contacted with the surface of said continuous fibers.
Claim 3
Dependent Claim
46 words
The fibrous material for a composite material as claimed in claim 1, wherein said fine particles are mainly deposited on the surface of the continuous fibers and said at least one of short fibers and whiskers are mainly deposited on the outside of said fine particles.
Claim 4
Dependent Claim
50 words
The fibrous material for a composite material as claimed in claim 1, wherein about 80% of said fine particles are deposited on the surface of said continuous fibers and about 80% of said at least one of short fibers and whiskers are deposited on the outside of said fine particles.
Claim 5
Dependent Claim
36 words
The fibrous material for a composite material as claimed in claim 1, wherein the average grain size of the fine particles is less than about 1/30 of the average length of the short fibers or whiskers.
Claim 6
Dependent Claim
31 words
The fibrous material for a composite material as claimed in claim 1, wherein the ceramic comprises at least one member selected from the group consisting of carbides, nitrides, borides and oxides.
Claim 7
Dependent Claim
124 words
The fibrous material for a composite material as claimed in claim 1, wherein the ceramic comprises: (i) an amorphous material substantially comprising Si, M, C and O; (ii) a composition substantially comprising: at least one crystalline particles mixture selected from (a) β-SiC, MC and a solid solution of β-SiC and MC, (b) β-SiC, MC and MC 1-x , and (c) β-SiC, MC, a solid solution of β-SiC and MC, and MC 1-x , each having a grain size of less than about 500 Å; amorphous SiO 2 ; and amorphous MO 2 ; and (iii) a mixture of said amorphous material (i) and said composition (ii) wherein M represents Ti or Zr, and x is a number greater than 0 and smaller than 1.
Claim 8
Dependent Claim
41 words
The fibrous material for a composite material as claimed in claim 1, wherein the ratio of said fine particles to said at least one of short fibers and whiskers is within the range of from 0.1:5 to 40:1 by volume ratio.
Claim 9
Dependent Claim
33 words
The fibrous material for a composite material as claimed in claim 1, wherein said fine particles have an average diameter of about 1/5,000 to 1/2 of the average diameter of the continuous fibers.
Claim 10
Dependent Claim
47 words
The fibrous material for a composite material as claimed in claim 1, wherein said short fibers and whiskers have an average diameter of about 1/3,000 to 1/5 of the average diameter of the continuous fibers and a length to diameter ratio of from about 50 to 1000.
Claim 11
Dependent Claim
25 words
The fibrous material for a composite material as claimed in claim 1, wherein said continuous fibers comprise at least one of ceramics and non-metal elements.
Claim 12
Dependent Claim
26 words
The fibrous material for a composite material as claimed in claim 1, wherein said continuous fibers have said fine particles and whiskers contacting the surface thereof.
Claim 13
Dependent Claim
26 words
The fibrous material for a composite material as claimed in claim 11, wherein the fibrous material is a woven fabric comprising a plurality of continuous fibers.
Claim 14
Dependent Claim
22 words
The fibrous material for a composite material as claimed in claim 1, wherein the fibrous material is a bundle of continuous fibers.
Claim 15
Dependent Claim
22 words
The fibrous material of claim 1, wherein spaces within said fibrous material are filled with a metal or form a fiber-reinforced metal.
References Cited (Backward Citations)
US4399232A
Cited
EP0055076A1
Cited
JPS5974247A
Cited
EP0170396A1
Cited
US4752503A
Cited
JPS6191341A
Cited
US4732779A
Cited
US4874661A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1993-10-08 | 1994-04-09 | 1994-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-08 | 1998-04-09 | 1998-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-08 | 2002-04-09 | 2002-10-09 | $7700.00 | Window Closed / Lapsed |