US3864068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot melt extrusion apparatus
Assignee: General Mills Inc
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Filing: 1973-02-09
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Granted: 1975-02-04
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Expires: 1993-02-09
Abstract
Abstract Disclosed is apparatus for extruding hot melt fibers. The apparatus includes die plates having easily renewable extrusion orifices.
Inventors
- 👤 John R Flakne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:20
CPC Classifications
D; D01; D01D; D01D4/00; D01D4/02; D01D4/022; B; B29; B29C; B29C48/00; B29C48/03; B29C48/04; B29C48/05; B29C48/25; B29C48/30; B29C48/345; B29C48/78; B29C48/80; B29C48/83; B29C48/832; B29C48/86; B29C48/865
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
116 words
A filament extrusion apparatus including means for supplying extrusion material at extrusion pressure; means for heating said extrusion material to a plastic condition; and die means, said die means including a plurality of identical die plates, each of said die plates including a pair of laterally extending shoulder means, said apparatus including a pair of rod means on which said shoulder means may rest for support, each of said die plates having first and second machined surfaces, a flow channel defined through each of said die plates, a ridge along one edge of each die plate, said ridge having defined therein a plurality of orifices and a flow passageway interconnecting said flow channel and said orifices.
Claim 2
Dependent Claim
116 words
A filament extrusion apparatus including means for supplying extrusion material at extrusion pressure; means for heating said extrusion material to a plastic condition; and die means, said die means including a plurality of identical die plates, each of said die plates including a pair of laterally extending shoulder means, said apparatus including a pair of rod means on which said shoulder means may rest for support, each of said die plates having first and second machined surfaces, a flow channel defined through each of said die plates, a ridge along one edge of each die plate, said ridge having defined therein a plurality of orifices and a flow passageway interconnecting said flow channel and said orifices.
Claim 3
Dependent Claim
9 words
The apparatus of claim 1 including a heater plate.
Claim 4
Dependent Claim
20 words
The apparatus of claim 1 wherein the outer surface of said ridge comprises a knurled surface thereby providing said orifices.
Claim 5
Dependent Claim
16 words
The apparatus of claim 3 wherein said knurled surface provides extrusion channels having a funnel-like shape.
Claim 6
Dependent Claim
13 words
The apparatus of claim 4 wherein said extrusion channels are triangular in cross-section.
Claim 7
Dependent Claim
13 words
The apparatus of claim 4 wherein said extrusion channels are rectangular in cross-section.
Claim 8
Dependent Claim
13 words
The apparatus of claim 4 wherein said extrusion channels are circular in cross-section.
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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |