US5128199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for fiber coating with particles
Assignee: Michigan State University
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Filing: 1990-11-05
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Granted: 1992-07-07
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Expires: 2010-11-05
Abstract
Abstract A system and method for uniformly coating one or more fibers (10) with particles of a material is described. The method uses a vibrator preferably an acoustic speaker (17b) in a housing (17c) to fluidize the particles (P1) in a chamber (17 or 30) to deposit them on spread fibers (10b). The fibers can be in the form of a tow of fibers. After the particles are coated on the fibers, the particles can be bonded to the fiber such as by using a heater (19). The resulting product has a uniform deposit of the particles and in the case of the tow of fibers can serve as a prepreg for laminate structures to be produced from the coated tow of fibers.
Inventors
- 👤 Shridhar Iyer
- 👤 Lawrence T. Drzal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:29
CPC Classifications
D; D06; D06M; D06M23/00; D06M23/08; B; B05; B05C; B05C19/00; B05C19/02; B05C9/00; B05C9/08; B05C9/14; B29; B29B; B29B15/00; B29B15/08; B29B15/10; B29B15/12; B65; B65H; B65H51/00; B65H51/005; D06B; D06B13/00; D06M10/00; D06M10/003; D06M23/06; B65H2701/00; B65H2701/30; B65H2701/31; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24116; Y10T428/24124; Y10T428/25; Y10T428/254; Y10T428/30; Y10T442/00; Y10T442/60; Y10T442/659; Y10T442/67
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
110 words
A prepreg for a laminate product which comprises a tow of fibers having beads of a thermoplastic polymer along the length of each fiber or group of fibers on the tow of fibers as shown in FIG. 4A which can be consolidated to form the laminate product as shown in FIG. 4B, wherein the prepreg has been formed by aerosolyzing a powder of the thermoplastic polymer in a chamber means around the tow of fibers using a vibrating means which produces an acoustical frequency in the chamber means to deposit the powder on the tow and heating the tow with the deposited powder to produce the prepreg with the beads.
Claim 2
Dependent Claim
110 words
A prepreg for a laminate product which comprises a tow of fibers having beads of a thermoplastic polymer along the length of each fiber or group of fibers on the tow of fibers as shown in FIG. 4A which can be consolidated to form the laminate product as shown in FIG. 4B, wherein the prepreg has been formed by aerosolyzing a powder of the thermoplastic polymer in a chamber means around the tow of fibers using a vibrating means which produces an acoustical frequency in the chamber means to deposit the powder on the tow and heating the tow with the deposited powder to produce the prepreg with the beads.
Claim 3
Dependent Claim
14 words
The prepreg of claim 1 wherein the tow of fibers is composed of carbon.
Claim 4
Dependent Claim
11 words
The prepreg of claim 1 wherein the polymer is a polyamide.
Claim 5
Dependent Claim
14 words
The prepreg of claim 3 wherein the tow of fibers is composed of carbon.
References Cited (Backward Citations)
US4894105A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-07-07 | 1996-01-06 | 1996-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-07-07 | 2000-01-06 | 2000-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-07-07 | 2004-01-06 | 2004-07-07 | $7700.00 | Window Closed / Lapsed |