US5547624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making and collecting continuous fibers in the form of a rod-shaped batt
Assignee: EIDP Inc
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Filing: 1994-08-09
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Granted: 1996-08-20
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Expires: 2014-08-09
Abstract
Abstract This invention relates to making backwindable rod shaped batts or logs from highly oriented flash-spun continuous fibers. The fibers are conducted from the exit of a spinneret through a tunnel and into a two stage diverging nozzle to slow down the fibers for an organized collection in the collection section. The invention further includes an inflatable bladder in a discharge section for initiating the formation of the log and a mesh screen in the collection section for reducing the occurrence of fiber blow out through the gas discharge ports.
Inventors
- 👤 Ashok H. Shah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:38
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/11
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
77 words
A method for forming rod-shaped batts of continuous backwindable fibers wherein the continuous fibers are provided with a stream of high speed gases, wherein the process comprises: collecting the fibers into a batt in a collection tube while discharging gases through peripheral openings in the peripheral wall of the collection tube; and controlling the rate of passage of the batt through the collection tube by changing the dimension of a constrictor positioned downstream of the collection tube.
Claim 2
Independent Claim
77 words
A method for forming rod-shaped batts of continuous backwindable fibers wherein the continuous fibers are provided with a stream of high speed gases, wherein the process comprises: collecting the fibers into a batt in a collection tube while discharging gases through peripheral openings in the peripheral wall of the collection tube; and controlling the rate of passage of the batt through the collection tube by changing the dimension of a constrictor positioned downstream of the collection tube.
Claim 3
Dependent Claim
57 words
The method according to claim 1 wherein the step of controlling the rate of passage of the batt comprises: directing the batt collected in the collection tube into a central passage in said constrictor; and providing a fluid into an annular space in said constrictor to expand a bladder into the central passage to constrict the passage.
References Cited (Backward Citations)
US3081519A
Cited
US3227794A
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US3413185A
Cited
US3600483A
Cited
US3417431A
Cited
US4352650A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-08-20 | 2000-02-19 | 2000-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-08-20 | 2004-02-19 | 2004-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-08-20 | 2008-02-19 | 2008-08-20 | $7700.00 | Window Closed / Lapsed |