US3761210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing fibers
Assignee: Unifrax I LLC
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Filing: 1971-07-09
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Granted: 1973-09-25
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Expires: 1991-07-09
Abstract
Abstract In an apparatus for the production of continuous fibers from a fiberizable material, a bushing with a plurality of orifices supplies streams of fiberizable material which are attenuated in the form of continuous fibers. The fibers are collected on a spool spaced from the bushing. An induced draft zone between the bushing and the collection spool is provided for flowing air evenly across the fibers so that broken fibers are removed from the collection area.
Inventors
- 👤 R Vaughan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:23
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/04; D01D11/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
88 words
An apparatus for producing continuous fibers comprising a bushing for supplying a plurality of streams of fiberizable material, means for drawing said material in the form of continuous fibers, said drawing means being spaced from said bushing, means separate from said drawing means for collecting broken fibers, said collecting means includes a spool for winding broken fibers, means for carrying broken fibers toward said collecting means, said carrying means including means for evenly flowing air in a direction transverse to the direction of movement of the drawing fibers.
Claim 2
Independent Claim
88 words
An apparatus for producing continuous fibers comprising a bushing for supplying a plurality of streams of fiberizable material, means for drawing said material in the form of continuous fibers, said drawing means being spaced from said bushing, means separate from said drawing means for collecting broken fibers, said collecting means includes a spool for winding broken fibers, means for carrying broken fibers toward said collecting means, said carrying means including means for evenly flowing air in a direction transverse to the direction of movement of the drawing fibers.
Claim 3
Dependent Claim
62 words
An apparatus according to claim 1 wherein said air flow means includes a first wall on one side of said fibers, a second wall spaced from said first wall on the other side of said fibers, said first and second wall being porous to permit the flow of air therethrough, and means for creating a low pressure area adjacent said first wall.
Claim 4
Dependent Claim
39 words
Apparatus according to claim 2 wherein said means for creating a low pressure area comprises a chamber connected to said first wall, an outlet in said chamber, a blower means having the low pressure side connected to said outlet.
Claim 5
Dependent Claim
18 words
An apparatus according to claim 1 including a plurality of springs forming a peripheral surface of said spool.
Claim 6
Dependent Claim
18 words
An apparatus according to claim 1 including means moving continuously toward said spool for attaching broken fibers thereto.
Claim 7
Dependent Claim
20 words
An apparatus according to claim 5 wherein said attaching means comprises a conveyor assembly in the path of air flow.
Claim 8
Dependent Claim
28 words
An apparatus according to claim 6 wherein said conveyor assembly comprises a pair of endless chains, a plurality of rods horizontally disposed and vertically spaced between said chains.
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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |