Patent US4275482A successfully refreshed from Google Patents.
US4275482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for forming a sliver from a card web
Assignee: Truetzschler GmbH and Co KG
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Filing: 1979-09-07
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Granted: 1981-06-30
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Expires: 1999-09-07
Abstract
Abstract An arrangement for carding fibers to produce a fibrous sliver, in which the fibrous sliver is advanced through the nip between two rollers, and withdrawn downwardly from the nip through a compacting funnel in which the sliver becomes formed with a coherent ribbon. The fibrous sliver is withdrawn in a vertical path coinciding with a center line of the nip, or it may be withdrawn in a path which is inclined to the longitudinal end to a center line of the nip. The pair of nip rollers are positioned to receive the fibrous sliver so that the latter passes through the nip therebetween. The spacing between the nip rollers and a guide baffle is arranged to be greater than the spacing between the guide baffle and a pair of withdrawing rollers located downstream of the funnel.
Inventors
- 👤 Ferdinard Leifeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:14
CPC Classifications
D; D01; D01G; D01G15/00; D01G15/02; D01G15/12; D01G15/46
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
85 words
In a carding arrangement, a combination comprising means for carding fibers to produce a fibrous sliver; a pair of nip rollers positioned to receive the fibrous sliver so that the same passes through the nip between said rollers; means, including a sliver-compacting funnel, arranged beneath said nip rollers for withdrawing the fibrous sliver from the nip thereof and converting it with a coherent ribbon; and a sliver guide baffle surrounding the path of movement of said sliver intermediate said nip rollers and said withdrawing means.
Claim 2
Dependent Claim
85 words
In a carding arrangement, a combination comprising means for carding fibers to produce a fibrous sliver; a pair of nip rollers positioned to receive the fibrous sliver so that the same passes through the nip between said rollers; means, including a sliver-compacting funnel, arranged beneath said nip rollers for withdrawing the fibrous sliver from the nip thereof and converting it with a coherent ribbon; and a sliver guide baffle surrounding the path of movement of said sliver intermediate said nip rollers and said withdrawing means.
Claim 3
Dependent Claim
38 words
A combination as defined in claim 1, wherein the spacing between said nip rollers and said guide baffle is greater than the spacing between said guide baffle and a pair of withdrawing rollers located downstream of said funnel.
Claim 4
Dependent Claim
16 words
A combination as defined in claim 1, said guide baffle having a longitudinally oriented guide surface.
Claim 5
Dependent Claim
22 words
A combination as defined in claim 1, said guide baffle having a guide surface which is located vertically beneath said nip rollers.
Claim 6
Dependent Claim
27 words
A combination as defined in claim 1, and further comprising means for moving said guide baffle towards and away from said nip rollers and compacting funnel, respectively.
Claim 7
Dependent Claim
43 words
A combination as defined in claim 1; said withdrawing means further comprising a pair of withdrawing rollers downstream of said compacting funnel; and further comprising means for moving said guide baffle, compacting funnel and withdrawing rollers towards and away from said nip rollers.
Claim 8
Dependent Claim
94 words
A combination as defined in claim 1, wherein the spacing between said nip rollers and said guide baffle is greater than the spacing between said guide baffle and a pair of withdrawing rollers located downstream of said funnel; said guide baffle having a longitudinally oriented guide surface; said guide baffle having a guide surface located vertically beneath said nip rollers; said withdrawing means further comprising a pair of withdrawing rollers downstream of said compacting funnel; and means for moving said guide baffle, compacting funnel and withdrawing rollers towards and away from said nip rollers.
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) | 1984-06-29 | 1984-12-29 | 1985-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-29 | 1988-12-29 | 1989-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-29 | 1992-12-29 | 1993-06-30 | $7700.00 | Window Closed / Lapsed |