Patent US3887322A successfully refreshed from Google Patents.
US3887322A
Expired / Lapsed
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Extruder die for multiple stream extrusion
Assignee: Atlantic Richfield Co
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Filing: 1973-11-28
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Granted: 1975-06-03
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Expires: 1993-11-28
Abstract
Abstract An extrusion die for producing a plurality of streams of extrudate in a single horizontal row has been developed. A slot die for extruding flat sheet has been adapted by inserting adjustable width flow-dividers into the slot to produce multiple streams of extrudate.
Inventors
- 👤 Keith G Johnson
- 👤 Anthony Paul Limbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:00
CPC Classifications
B; B29; B29B; B29B9/00; B29B9/02; B29B9/06; B29C; B29C44/00; B29C44/34; B29C44/36; B29C44/46; B29C44/468; B29C48/00; B29C48/03; B29C48/05; B29C48/25; B29C48/30; B29C48/302; B29C48/32; B29C48/34; B29C48/92; B29C2948/00; B29C2948/92; B29C2948/92504; B29C2948/92609; B29C2948/92647; B29C2948/92819; B29C2948/92857; B29C2948/92904; B29C2948/92942; B29C48/88; B29C48/911; B29C48/9135; B29C48/914
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
93 words
An extrusion die for producing a plurality of streams of extrudate comprising a housing having an inlet and a discharge port and a plenum connecting said inlet and discharge port, said discharge port being a slot-like, horizontally disposed opening having mounted therein a plurality of flow-divider means for dividing said slot into a plurality of orifices, each of said divider means having a fixed side and an adjustable side, said adjustable side being laterally adjustable in relation to the fixed side of an adjacent divider means to control the size of the orifices.
Claim 2
Dependent Claim
93 words
An extrusion die for producing a plurality of streams of extrudate comprising a housing having an inlet and a discharge port and a plenum connecting said inlet and discharge port, said discharge port being a slot-like, horizontally disposed opening having mounted therein a plurality of flow-divider means for dividing said slot into a plurality of orifices, each of said divider means having a fixed side and an adjustable side, said adjustable side being laterally adjustable in relation to the fixed side of an adjacent divider means to control the size of the orifices.
Claim 3
Dependent Claim
93 words
An extrusion die for producing a plurality of streams of extrudate comprising a housing having an inlet and a discharge port and a plenum connecting said inlet and discharge port, said discharge port being a slot-like, horizontally disposed opening having mounted therein a plurality of flow-divider means for dividing said slot into a plurality of orifices, each of said divider means having a fixed side and an adjustable side, said adjustable side being laterally adjustable in relation to the fixed side of an adjacent divider means to control the size of the orifices.
Claim 4
Dependent Claim
93 words
An extrusion die for producing a plurality of streams of extrudate comprising a housing having an inlet and a discharge port and a plenum connecting said inlet and discharge port, said discharge port being a slot-like, horizontally disposed opening having mounted therein a plurality of flow-divider means for dividing said slot into a plurality of orifices, each of said divider means having a fixed side and an adjustable side, said adjustable side being laterally adjustable in relation to the fixed side of an adjacent divider means to control the size of the orifices.
References Cited (Backward Citations)
US3474495A
Cited
US3461501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |