US3903569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smoothening device for cross-lapper
Assignee: Fried Krupp AG
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Filing: 1973-09-06
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Granted: 1975-09-09
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Expires: 1993-09-06
Abstract
Abstract A cross-lapping device for cross-lapping pile or laying web to form fleece, according to which one or two rotatable blade wheels in addition to the cross-lapping means, preferably together therewith, are reciprocable in such a way that an air current is generated which is directed toward the lateral rim portions of the fleece to be cross-lapped.
Inventors
- 👤 Curt Brandis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:54
CPC Classifications
D; D01; D01G; D01G25/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
103 words
A cross-lapping device for cross-lapping a web onto a receiving surface to form folds in said fleece, which includes a reciprocable carriage having a feeding table and calendar rollers between which the web is fed and is crosslapped, whereby said web is folded at each end of movement of said reciprocating carriage to form folded edges, blade wheel means at opposite ends of said carriage between said calendar rollers and the end of said carriage to direct a current of air onto the folded edge at each end of the travel of said carriage, and drive means to drive said blade wheel means.
Claim 2
Dependent Claim
103 words
A cross-lapping device for cross-lapping a web onto a receiving surface to form folds in said fleece, which includes a reciprocable carriage having a feeding table and calendar rollers between which the web is fed and is crosslapped, whereby said web is folded at each end of movement of said reciprocating carriage to form folded edges, blade wheel means at opposite ends of said carriage between said calendar rollers and the end of said carriage to direct a current of air onto the folded edge at each end of the travel of said carriage, and drive means to drive said blade wheel means.
Claim 3
Dependent Claim
30 words
A device in combination according to claim 1, which includes control means associated with said blade wheel means for variation of the speed of rotation of said blade wheel means.
Claim 4
Dependent Claim
29 words
A device in combination according to claim 2, in which the blades of said blade wheel means are adjustable, and which includes adjusting means for adjusting said adjustable blades.
Claim 5
Dependent Claim
32 words
A device in combination according to claim 1, which includes adjustable guide means arranged adjustably with said blade wheels including protective hoods for variably influencing the flow intensity of said air current.
Claim 6
Dependent Claim
42 words
A device in combination according to claim 4, which includes means for controlling within the region of the lateral folded edges of the fleece to be cross-lapped generation of the static pressure of the air current generated by said blade wheel means.
Claim 7
Dependent Claim
34 words
A device in combination according to claim 5, which includes means for controlling said static pressure so as to cause the same to at least equal the underpressure created by the reciprocable feeding table.
References Cited (Backward Citations)
US805934A
Cited
US2621927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |