US3875625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for interlacing filaments of multifilament yarns
Assignee: Rhone Poulenc Textile SA
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Filing: 1974-02-01
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Granted: 1975-04-08
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Expires: 1994-02-01
Abstract
Abstract Multifilament yarn is interlaced by passing the yarn through an apparatus which impinges four streams or jets of fluid upon the yarn. The jets or streams of fluid are given a rotational component by auxiliary streams of air which impinge on the jets or streams with a tangential attitude. The yarn and impinging streams of fluid converge in a cavity located within an interlacing chamber wherein the height of the cavity is no greater than the smallest diameter of the cavity and wherein the inlet of the interlacing chamber is wider than the diameter of the cavity and the outlet of the interlacing chamber is narrower than the cavity.
Inventors
- 👤 Charles Blanc
- 👤 Christian Delarue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:58
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/08
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
135 words
An apparatus for interlacing a multifilament strand of yarn under the influence of an expanding fluid comprising: an interlacing chamber through which the yarn passes as the yarn is interlaced wherein the chamber includes a treatment zone defined by a surface of revolution about an axis, the cavity having a diameter and a height wherein the height is at most equal to the diameter; at least one conduit registered with said treatment zone for injecting the fluid into said treatment zone wherein said conduit has an axis intersecting the axis of said treatment zone; and means aligned with said conduit for introducing a rotational component of motion to the fluid injected through said conduit having an axis normal to the axis of the treatment zone to cause the filaments of the multifilament yarn to interlace.
Claim 2
Independent Claim
135 words
An apparatus for interlacing a multifilament strand of yarn under the influence of an expanding fluid comprising: an interlacing chamber through which the yarn passes as the yarn is interlaced wherein the chamber includes a treatment zone defined by a surface of revolution about an axis, the cavity having a diameter and a height wherein the height is at most equal to the diameter; at least one conduit registered with said treatment zone for injecting the fluid into said treatment zone wherein said conduit has an axis intersecting the axis of said treatment zone; and means aligned with said conduit for introducing a rotational component of motion to the fluid injected through said conduit having an axis normal to the axis of the treatment zone to cause the filaments of the multifilament yarn to interlace.
Claim 3
Dependent Claim
23 words
The apparatus of claim 1 wherein the diameter is the smallest diameter of the treatment zone measurable on the surface of revolution thereof.
Claim 4
Dependent Claim
75 words
The apparatus of claim 1 wherein a plurality of the conduits register with the treatment zone for injecting the fluid and wherein the axis of each conduit forms the same angle with the axis of the treatment zone and intersects the treatment zone surface in a single plane which is normal to the axis of the treatment zone so that the fluid enters the treatment zone from each conduit at the same level and angle.
Claim 5
Dependent Claim
27 words
The apparatus of claim 3 wherein the axis of each conduit extends in the same plane which plane is normal to the axis of the treatment zone.
Claim 6
Dependent Claim
20 words
The apparatus of claim 3 wherein the angle between the axes of two adjacent conduits is between 30.degree. and 180.degree..
Claim 7
Dependent Claim
20 words
The apparatus of claim 4 wherein the angle between the axes of two adjacent conduits is between 30.degree. and 180.degree..
Claim 8
Dependent Claim
59 words
The apparatus of claim 1 wherein the means for introducing a rotational component of motion to the fluid includes a turbulence chamber coaxial with the conduit in which there is an axial intake for a principal stream of fluid and a generally tangential intake for an auxiliary stream of fluid which introduces the rotational component to the principal stream.
Claim 9
Dependent Claim
37 words
The apparatus of claim 3 wherein the conduits are distributed in equal spacing about the treatment zone with the axes thereof contained in the same plane which plane extends normal to the axis of the treatment zone.
Claim 10
Dependent Claim
22 words
The apparatus of claim 8 wherein the conduits are four in number and the axes of the conduits are spaced 90.degree. apart.
Claim 11
Dependent Claim
26 words
The apparatus of claim 1 wherein the interlacing chamber downstream of the cavity has an outlet with a diameter greater than the diameter of the cavity.
Claim 12
Dependent Claim
18 words
The apparatus of claim 10 wherein the fluid injected into the cavity expands freely out of the outlet.
Claim 13
Dependent Claim
10 words
The apparatus of claim 10 wherein the outlet is constricted.
Claim 14
Dependent Claim
10 words
The apparatus of claim 12 wherein the constriction occurs abruptly.
Claim 15
Dependent Claim
10 words
The apparatus of claim 12 wherein the constriction occurs gradually.
Claim 16
Dependent Claim
28 words
The device of claim 10 wherein the interlacing chamber upstream of the cavity has an inlet with a diameter that is greater than the diameter of the cavity.
Claim 17
Dependent Claim
16 words
The apparatus of claim 15 further including means for inserting the yarn aligned with the inlet.
Claim 18
Dependent Claim
54 words
The apparatus of claim 1 wherein the apparatus is made of two separate parts which are joined along an area which intersects the interlacing chamber so that the yarn may be placed in the interlacing chamber upon separating the two parts and may be surrounded by the interlacing chamber upon joining the two parts.
Claim 19
Dependent Claim
36 words
The apparatus of claim 3 wherein at least one of said conduits includes means for injecting fluid having nonturbulent flow into the cavity at the same level as the conduits injecting fluid having a rotary component.
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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |