US3834849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber-aligning extrusion nozzle
Assignee: Conopco Inc
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Filing: 1972-12-13
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Granted: 1974-09-10
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Expires: 1992-12-13
Abstract
Abstract A fiber-aligning extrusion nozzle for extrudable, fiber containing compositions comprises a housing having an inlet and an outlet. One or more partition members are mounted within the housing between the inlet and the outlet, generally parallel to the axis of flow, dividing the housing longitudinally into passages that have closely spaced sides. The edge of each partition member adjacent the outlet of the housing is serrated to provide a plurality of teeth, adjacent teeth being inclined in opposite directions outwardly from the partition member. The partition members cause the formation of discrete streams of composition during extrusion and assist in aligning the fibers in the composition generally parallel to the axis of flow. The teeth disrupt at least the surface of the discrete streams causing them to recombine as a unitary mass at the outlet, while retaining the fibers therein in generally axial alignment. The edge of each partition member adjacent the inlet of the housing is sharpened to facilitate movement of the composition through the nozzle.
Inventors
- 👤 M Supran
- 👤 K Parekh
- 👤 L Berzins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:59
CPC Classifications
A; A23; A23J; A23J3/00; A23J3/22; A23J3/26; A22; A22C; A22C7/00; B; B29; B29C; B29C48/00; B29C48/03; B29C48/07; B29C48/12; B29C48/05
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
126 words
A fiber-aligning extrusion nozzle for extrudable, fiber containing composition comprising a housing having an inlet, an outlet, and at least one partition member mounTed therein between the inlet and the outlet and generally parallel to the axis of flow, the partition member dividing the housing longitudinally into at least two passages having sides spaced so as to effect alignment of a substantial proportion of fibers generally parallel to the axis of flow and being adapted to form at least two discrete streams of composition, the partition member further having means associated with an edge thereof adjacent the outlet of the housing for preventing the formation of discrete layers of composition as the composition is extruded from the nozzle, while retaining the fibers therein in general alignment.
Claim 2
Dependent Claim
126 words
A fiber-aligning extrusion nozzle for extrudable, fiber containing composition comprising a housing having an inlet, an outlet, and at least one partition member mounTed therein between the inlet and the outlet and generally parallel to the axis of flow, the partition member dividing the housing longitudinally into at least two passages having sides spaced so as to effect alignment of a substantial proportion of fibers generally parallel to the axis of flow and being adapted to form at least two discrete streams of composition, the partition member further having means associated with an edge thereof adjacent the outlet of the housing for preventing the formation of discrete layers of composition as the composition is extruded from the nozzle, while retaining the fibers therein in general alignment.
Claim 3
Dependent Claim
30 words
A fiber-aligning extrusion nozzle according to claim 1, wherein the preventing means includes means for disrupting surfaces of the streams of composition, while retaining the fibers therein in general alignment.
Claim 4
Dependent Claim
29 words
A fiber-aligning extrusion nozzle according to claim 2, wherein the disrupting means includes a plurality of teeth, adjacent teeth being inclined in opposite directions outwardly from the partition member.
Claim 5
Dependent Claim
23 words
A fiber-aligning extrusion nozzle according to claim 1, wherein an edge of the partition member adjacent the inlet of the housing is sharpened.
Claim 6
Dependent Claim
15 words
A fiber-aligning extrusion nozzle according to claim 1, wherein the partition member is a plate.
Claim 7
Dependent Claim
19 words
A fiber-aligning extrusion nozzle according to claim 1, wherein the housing is tapered from the inlet to the outlet.
Claim 8
Dependent Claim
23 words
A fiber-aligning extrusion nozzle according to claim 6, wherein there is provided a plurality of partition members aligned to assume a converging attitude.
Claim 9
Dependent Claim
18 words
A fiber-aligning extrusion nozzle according to claim 1, wherein the partition member is spaced longitudinally from the inlet.
Claim 10
Dependent Claim
18 words
A fiber-aligning extrusion nozzle according to claim 1, wherein the partition member is spaced longitudinally from the outlet.
Claim 11
Dependent Claim
35 words
A fiber-aligning nozzle according to claim 1, wherein the outlet has means associated therewith for disrupting surfaces of the composition as it is extruded from the nozzle, while retaining the fibers therein in general alignment.
Claim 12
Dependent Claim
109 words
A fiber-aligning extrusion nozzle for extrudable, fiber containing compositions comprising a housing having an inlet, an outlet, and at least one plate mounted therein between the inlet and the outlet and generally parallel to the axis of flow, the plate dividing the housing longitudinally into at least two passages having sides spaced so as to effect alignment of a substantial proportion of fibers generally parallel to the axis of flow and being adapted to form at least two discrete streams of composition, the plate further having an edge adjacent the outlet serrated to provide a plurality of teeth, adjacent teeth being inclined in opposite directions outwardly from the plate.
Claim 13
Dependent Claim
109 words
A fiber-aligning extrusion nozzle for extrudable, fiber containing compositions comprising a housing having an inlet, an outlet, and at least one plate mounted therein between the inlet and the outlet and generally parallel to the axis of flow, the plate dividing the housing longitudinally into at least two passages having sides spaced so as to effect alignment of a substantial proportion of fibers generally parallel to the axis of flow and being adapted to form at least two discrete streams of composition, the plate further having an edge adjacent the outlet serrated to provide a plurality of teeth, adjacent teeth being inclined in opposite directions outwardly from the plate.
Claim 14
Dependent Claim
184 words
A fiber-aligning extrusion nozzle for extrudable, fiber containing composition comprising a housing having an inlet, an outlet, and at least one partition member mounted therein between the inlet and the outlet and generally parallel to the axis of flow, the partition member dividing the housing longitudinally into at least two passages having sides spaced so as to effect alignment of a substantial proportion of fibers generally parallel to the axis of flow and being adapted to form at least two discrete streams of composition, the partition member further having means associated with an edge thereof adjacent the outlet of the housing for preventing the formation of discrete layers of composition as the composition is extruded from the nozzle, while retaining the fibers therein in general alignment and maintaining the nozzle interior free of any matter additional to composition already flowing through the nozzle past said edge of the partition member and free of any composition additional to the composition already flowing through the nozzle past said edge of the partition member, the preventing means including means for disrupting surfaces of the streams of composition.
Claim 15
Dependent Claim
184 words
A fiber-aligning extrusion nozzle for extrudable, fiber containing composition comprising a housing having an inlet, an outlet, and at least one partition member mounted therein between the inlet and the outlet and generally parallel to the axis of flow, the partition member dividing the housing longitudinally into at least two passages having sides spaced so as to effect alignment of a substantial proportion of fibers generally parallel to the axis of flow and being adapted to form at least two discrete streams of composition, the partition member further having means associated with an edge thereof adjacent the outlet of the housing for preventing the formation of discrete layers of composition as the composition is extruded from the nozzle, while retaining the fibers therein in general alignment and maintaining the nozzle interior free of any matter additional to composition already flowing through the nozzle past said edge of the partition member and free of any composition additional to the composition already flowing through the nozzle past said edge of the partition member, the preventing means including means for disrupting surfaces of the streams of composition.
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) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |