US3776669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for collecting centrifugally spun filaments
Assignee: Kureha Corp
•
Filing: 1971-12-29
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Granted: 1973-12-04
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Expires: 1991-12-29
Abstract
Abstract An apparatus for collecting centrifugally spun filaments from a rotating spinning device of a centrifugal melt spinning machine. The collecting apparatus includes at least one stationary airjet, surrounding the rotating spinning device, a rotatable cylindrical collecting surface that is air-permeable, and a stationary cutter located between the rotating spinning device and the rotating collecting surface.
Inventors
- 👤 Y Ito
- 👤 I Kameyama
- 👤 T Araki
- 👤 Y Kawai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:48
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/18
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
90 words
An apparatus for collecting filaments extruded from a rotatable spinning device of a centrifugal melt spinning machine, said apparatus comprising: 1. a rotatable cylindrical collection surface, said cylindrical collection surface being air permeable and surrounding the rotatable spinning device; 2. at least one stationary air jet, positioned to convey the extruded filaments from the rotatable spinning device onto said cylindrical collection surface; and 3. a stationary cutter mounted between the rotatable spinning device and said rotatable cylindrical collecting surface, said cutter serving to cut the filaments to a predetermined length.
Claim 2
Independent Claim
90 words
An apparatus for collecting filaments extruded from a rotatable spinning device of a centrifugal melt spinning machine, said apparatus comprising: 1. a rotatable cylindrical collection surface, said cylindrical collection surface being air permeable and surrounding the rotatable spinning device; 2. at least one stationary air jet, positioned to convey the extruded filaments from the rotatable spinning device onto said cylindrical collection surface; and 3. a stationary cutter mounted between the rotatable spinning device and said rotatable cylindrical collecting surface, said cutter serving to cut the filaments to a predetermined length.
Claim 3
Dependent Claim
23 words
at least one stationary air jet, positioned to convey the extruded filaments from the rotatable spinning device onto said cylindrical collection surface; and
Claim 4
Dependent Claim
23 words
at least one stationary air jet, positioned to convey the extruded filaments from the rotatable spinning device onto said cylindrical collection surface; and
Claim 5
Dependent Claim
15 words
The apparatus of claim 1 wherein said rotatable cylindrical collecting surface is an air comb.
Claim 6
Dependent Claim
22 words
The apparatus of claim 1 additionally comprising a second air jet positioned to force the filaments off of said cylindrical collection surface.
Claim 7
Dependent Claim
26 words
a stationary cutter mounted between the rotatable spinning device and said rotatable cylindrical collecting surface, said cutter serving to cut the filaments to a predetermined length.
Claim 8
Dependent Claim
26 words
a stationary cutter mounted between the rotatable spinning device and said rotatable cylindrical collecting surface, said cutter serving to cut the filaments to a predetermined length.
References Cited (Backward Citations)
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US2587710A
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US2931422A
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US3097085A
Cited
US3358323A
Cited
US3649234A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |