US3696604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal spinning device
Assignee: Toyota Central R&D Labs Inc
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Filing: 1971-05-11
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Granted: 1972-10-10
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Expires: 1991-05-11
Abstract
Abstract A centrifugal spinning device having a feed roller and a presser to feed sliver into a fiber liberating device including an opening roller therein, a spinning rotor for depositing liberated fibers supplied from the fiber liberating device within a cavity therein, and a guide tube installed on the axis of rotation of the rotor for guiding out twisted yarn from the rotor, provided with the improvement wherein the entrance opening of the guide tube is formed by ceramic or ceramic composite material, thereby to obtain good spinning stability.
Inventors
- 👤 Choji Nozaki
- 👤 Kiichi Kono
- 👤 Toshikiko Sakai
- 👤 Osami Kamigaito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:31
CPC Classifications
D; D01; D01H; D01H4/00; D01H4/40; B; B65; B65H; B65H57/00; B65H57/24; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
82 words
In a centrifugal spinning device having a feed roller and a presser to feed sliver, a fiber liberating device including an opening roller therein receiving said sliver, a spinning rotor for depositing liberated fibers supplied from said fiber liberating device within a cavity in the rotor, and a guide tube coaxial with said rotor for receiving deposited liberated fibers and guiding twisted yarn out of the rotor, the improvement wherein said guide tube has a fiber entrance opening formed of ceramic material.
Claim 2
Dependent Claim
82 words
In a centrifugal spinning device having a feed roller and a presser to feed sliver, a fiber liberating device including an opening roller therein receiving said sliver, a spinning rotor for depositing liberated fibers supplied from said fiber liberating device within a cavity in the rotor, and a guide tube coaxial with said rotor for receiving deposited liberated fibers and guiding twisted yarn out of the rotor, the improvement wherein said guide tube has a fiber entrance opening formed of ceramic material.
Claim 3
Dependent Claim
30 words
A centrifugal spinning device as set forth in claim 1, wherein said entrance opening of the guide tube is made of lithia-alumino-silicate sintered substantially at 1,150* C for 10 hours.
Claim 4
Dependent Claim
30 words
A centrifugal spinning device as set forth in claim 1, wherein said entrance opening of the guide tube is made of lithia-alumino-silicate sintered substantially at 1,260* C for 10 hours.
Claim 5
Dependent Claim
28 words
A centrifugal spinning device as set forth in claim 1, wherein said entrance opening of the guide tube is made of a ceramic composite including a metallic material.
Claim 6
Dependent Claim
16 words
A centrifugal spinning device as set forth in claim 4, wherein said metallic material contains chromium.
Claim 7
Dependent Claim
28 words
A centrifugal spinning device as set forth in claim 1, wherein said entrance opening of the guide tube is formed as a separate navel made of ceramic material.
Claim 8
Dependent Claim
25 words
A centrifugal spinning device as set forth in claim 6, wherein said navel is made of lithia-alumino-silicate sintered essentially at 1,150* C for 10 hours.
Claim 9
Dependent Claim
25 words
A centrifugal spinning device as set forth in claim 6, wherein said navel is made of lithia-alumino-silicate sintered essentially at 1,260* C for 10 hours.
Claim 10
Dependent Claim
23 words
A centrifugal spinning device as set forth in claim 6, wherein said navel is made of a ceramic composite including a metallic material.
Claim 11
Dependent Claim
16 words
A centrifugal spinning device as set forth in claim 9, wherein said metallic material contains chromium.
Claim 12
Dependent Claim
18 words
A centrifugal spinning device as set forth in claim 6, wherein said guide tube is made of metal.
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) | 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 |