US3798887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for spinning non-continuous fibers in a rotary bowl
Assignee: Alsacienne de Constructions Mecaniques SA
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Filing: 1973-06-20
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Granted: 1974-03-26
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Expires: 1993-06-20
Abstract
Abstract A work component of solid material such as a disc having a shape of revolution and of small height compared with its diameter is placed within a rotary bowl for spinning free fibers and permitted to rotate freely about its axis of revolution by frictional contact with the internal wall of the rotating bowl. The fibers are gathered together more effectively by means of the disc which has the further design function of packing and smoothing the yarn as it is being formed while also incorporating any impurities therein.
Inventors
- 👤 Chatelier J Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:26
CPC Classifications
D; D01; D01H; D01H4/00; D01H4/04; D01H4/08; D01H4/10
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
74 words
A device for spinning non-continuous fibers in a rotary bowl wherein said device is provided within the interior of the bowl with at least one work component constituted by a solid body of revolution of small height with respect to its diameter and applied against the wall of the bowl while being freely driven in rotation about its axis of revolution by frictional contact with said wall when said bowl is in rotational motion.
Claim 2
Independent Claim
74 words
A device for spinning non-continuous fibers in a rotary bowl wherein said device is provided within the interior of the bowl with at least one work component constituted by a solid body of revolution of small height with respect to its diameter and applied against the wall of the bowl while being freely driven in rotation about its axis of revolution by frictional contact with said wall when said bowl is in rotational motion.
Claim 3
Dependent Claim
26 words
A device as defined in claim 1, wherein the work component is formed of at least semi-rigid material which is indestructible under normal conditions of operation.
Claim 4
Dependent Claim
47 words
A device as defined in claim 1, wherein the work component is free within the bowl, and wherein said component is frictionally driven in rotation about its axis while said axis travels at the same time in circular motion about the axis of rotation of the bowl.
Claim 5
Dependent Claim
36 words
A device as defined in claim 1, wherein said device comprises means for immobilizing the axis of the work component within the bowl, whereby said work component is left free to rotate frictionally about its axis.
Claim 6
Dependent Claim
14 words
A device as defined in claim 2, wherein the work component is a ring.
Claim 7
Dependent Claim
16 words
A device as defined in claim 2, wherein the work component consists of a circular disc.
Claim 8
Dependent Claim
38 words
A device as defined in claim 5, wherein the work component forms a rotary partition-wall which separates the zone of admission of fibers into the bowl from the zone in which the yarn is formed prior to delivery.
Claim 9
Dependent Claim
42 words
A device as defined in claim 7, wherein the fibers are introduced into a zone of the bowl which is located on one side of the disc whilst the yarn is delivered from the bowl on the other side of said disc.
Claim 10
Dependent Claim
69 words
A device as defined in claim 7, wherein the fibers are introduced into a zone of the bowl which is located on one side of the disc whilst the yarn is formed on the opposite side of said disc and passes through a central hole of said disc for subsequent delivery from the bowl on the same side as that on which the fibers are introduced into said bowl.
Claim 11
Dependent Claim
28 words
A device as defined in claim 5, wherein that portion of the bottom of the bowl which is continuously covered by the disc is provided with drilled holes.
Claim 12
Dependent Claim
17 words
A device as defined in claim 5, wherein the disc has the shape of an inverted saucer.
Claim 13
Dependent Claim
30 words
A device as defined in claim 5, wherein the disc has an annular rib on the edge portion of that face which is directed towards the bottom of the bowl.
Claim 14
Dependent Claim
26 words
A device as defined in claim 5, wherein the work component rotates about an axis which is inclined with respect to the axis of the bowl.
Claim 15
Dependent Claim
60 words
A device as defined in claim 5 in which the peripheral edge portion of the bottom of the bowl is raised, wherein the work component is free and has a diameter comprised between the maximum internal diameter of the bowl and the diameter of the central portion of the bottom of the bowl as limited by said raised edge portion.
Claim 16
Dependent Claim
17 words
A device as defined in claim 1, wherein the work component is formed of synthesis polymer material.
Claim 17
Dependent Claim
23 words
A device as defined in claim 5, wherein the work component has a larger diameter than the maximum internal radius of the bowl.
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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |