Patent US3697634A successfully refreshed from Google Patents.
US3697634A
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US
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Alignment and orientation of whiskers and fibers
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1969-12-24
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Granted: 1972-10-10
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Expires: 1989-12-24
Abstract
Abstract Alignment of fibers or whiskers such as Beta -SiC and Alpha A+2O3 is accomplished by suspending unoriented whiskers into an ethylene glycol solution and adding several drops of amyl acetate to the solution near the center to produce a rolling action at the interface due to the motion of the solutions as they mix with each other. The unoriented whiskers are caught up in the rolling interface and are aligned into a thread.
Inventors
- 👤 Karl P Staudhammer
- 👤 Vernon H Reineking
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:23
CPC Classifications
C; C22; C22C; C22C47/00; C22C47/02; C22C47/025; B; B22; B22F; B22F2998/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49801; Y10T428/00; Y10T428/29; Y10T428/2913
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A process for aligning unoriented whiskers selected from the class consisting of metal, crystal, and ceramics which comprises; a. suspending the said unoriented whiskers in a first solution of ethylene glycol; b. adding a second solution selected from the class consisting of amyl acetate, benzene, chlorobenzene, cyclohexane, and toluene to form a rolling type of action at the interface of the two solutions as they mix together; c. thereby causing the suspended whiskers to be drawn into the interface and aligned into a thread; and d. then withdrawing the thread.
Claim 2
Dependent Claim
94 words
A process for aligning unoriented whiskers selected from the class consisting of Alpha Al2O3, Beta -SiC, Si3N4, and Alpha -SiC which comprises: a. suspending the said unoriented whiskers in a first solution of ethylene glycol: b. adding a second solution selected from the class consisting of amyl acetate, benzene, chlorobenzene, cyclohexane, and toluene to form a rolling type of action at the interface of the two solutions as they mix together; c. thereby causing the suspended whiskers to be drawn into the interface and aligned into a thread; and d. then withdrawing the thread.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |