US3898788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of spinning textile fibers
Assignee: Individual
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Filing: 1974-01-07
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Granted: 1975-08-12
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Expires: 1994-01-07
Abstract
Abstract Air-permeable collecting surface means are continuously moved. Suction is produced on said collecting surface means in a predetermined suction zone, which has an abrupt boundary in the direction in which said collecting surface means depart from said suction zone. A stream of air is thus produced, which is directed toward said suction zone. Fibers are entrained in said stream so that the latter carries said fibers to said suction zone and the fibers are twisted together adjacent to said boundary by the components of force which are due to the movement of the collecting surface and said suction. The resulting twisted fibers are held against rotation and are doffed in the form of a thread from said collecting surface means transversely to the direction of movement thereof.
Inventors
- 👤 Ernst Fehrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:18
CPC Classifications
D; D01; D01H; D01H4/00; D01H4/04; D01H4/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
209 words
A process of spinning textile fibers which comprises: a. continuously moving a carrier having two opposite faces and permeable to flow of air between said two faces in a predetermined direction sequentially through a first zone and a second zone separated from said first zone by a boundary transverse to said direction; b. applying suction to one of said faces in said first zone while maintaining equal pressure on said two faces in said second zone, whereby ambient air is caused to flow through said carrier inward of the other face thereof in said first zone, no air flows through said carrier in said second zone, and a current of air is caused to flow in a direction opposite to said predetermined direction from said second zone toward said first zone; c. depositing textile fibers on said other face before said carrier passes said boundary from said first zone to said second zone, whereby said fibers are held to said other face by said air flowing in said first zone, are released from said other face in said second zone, and are twisted between said moving carrier and said current; and d. withdrawing said twisted fibers from said carrier transversely to the direction of carrier movement adjacent said boundary.
Claim 2
Dependent Claim
209 words
A process of spinning textile fibers which comprises: a. continuously moving a carrier having two opposite faces and permeable to flow of air between said two faces in a predetermined direction sequentially through a first zone and a second zone separated from said first zone by a boundary transverse to said direction; b. applying suction to one of said faces in said first zone while maintaining equal pressure on said two faces in said second zone, whereby ambient air is caused to flow through said carrier inward of the other face thereof in said first zone, no air flows through said carrier in said second zone, and a current of air is caused to flow in a direction opposite to said predetermined direction from said second zone toward said first zone; c. depositing textile fibers on said other face before said carrier passes said boundary from said first zone to said second zone, whereby said fibers are held to said other face by said air flowing in said first zone, are released from said other face in said second zone, and are twisted between said moving carrier and said current; and d. withdrawing said twisted fibers from said carrier transversely to the direction of carrier movement adjacent said boundary.
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) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |