US3791784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous extrusion machine for manufacturing plastic nets
Assignee: Triker SA
•
Filing: 1972-11-13
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Granted: 1974-02-12
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Expires: 1992-11-13
Abstract
Abstract A continuous extrusion machine for manufacturing a net like mesh: the machine includes a circular housing having first and second adjacent outlets near its base; one extrusion outlet includes means for extruding longitudinal ribs which means is replaceably fastened at the end of the housing; the other extrusion outlet is shaped to produce transverse ribs and to deposit the transverse ribs on the longitudinal ribs; each outlet communicates with a separate extrusion pressure chamber, whereby two different materials may be extruded; blocking means at the exterior of the housing are shifted between a position which blocks the second outlet and one which opens the second outlet, thereby selectively cutting off or permitting flow out the second outlet to produce spaced transverse ribs.
Inventors
- 👤 D Arechavaleta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:59
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/301; B29C48/03; B29C48/05; B29C48/09; B29C48/10; B29C48/13; B29C48/07; B29C48/08; B29L; B29L2028/00; Y; Y10; Y10S; Y10S264/00; Y10S264/81
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
189 words
A continuous extrusion machine for manufacturing a net like mesh, which mesh is comprised of a first array of spaced apart filaments, and of a second array of spaced apart filaments all extending transversely to and intersecting the first array of filaments; said machine comprising: a housing defining and surrounding a pressure chamber means; a first outlet means from said chamber means to the exterior thereof; said first outlet means being shaped so as to cause extrusion of the first array of filaments, and also being continuously open; a second outlet means from said chamber means to the exterior thereof; said second outlet means being shaped so as to cause extrusion of a filament of the second array of filaments each time said second outlet means is open; said second outlet means being positioned sufficiently close to said first outlet means as to deposit material extruded from said second outlet means on the material extruded from said first outlet means; blocking means external to said chamber means and movable between a first position which blocks said second outlet means and a second position which unblocks said second outlet means.
Claim 2
Dependent Claim
189 words
A continuous extrusion machine for manufacturing a net like mesh, which mesh is comprised of a first array of spaced apart filaments, and of a second array of spaced apart filaments all extending transversely to and intersecting the first array of filaments; said machine comprising: a housing defining and surrounding a pressure chamber means; a first outlet means from said chamber means to the exterior thereof; said first outlet means being shaped so as to cause extrusion of the first array of filaments, and also being continuously open; a second outlet means from said chamber means to the exterior thereof; said second outlet means being shaped so as to cause extrusion of a filament of the second array of filaments each time said second outlet means is open; said second outlet means being positioned sufficiently close to said first outlet means as to deposit material extruded from said second outlet means on the material extruded from said first outlet means; blocking means external to said chamber means and movable between a first position which blocks said second outlet means and a second position which unblocks said second outlet means.
Claim 3
Dependent Claim
38 words
The continuous extrusion machine of claim 1, further including an extrusion die in said chamber means, which said die includes said first and said second outlet means; said extrusion die being immovable during movement of said blocking means.
Claim 4
Dependent Claim
46 words
The continuous extrusion machine of claim 1, wherein said housing is generally annular and said first and second outlet means both exit to the annular periphery of said housing; said blocking means being around said housing annular periphery and being movable with respect to said housing.
Claim 5
Dependent Claim
34 words
The continuous extrusion machine of claim 3, wherein said first and second outlet means both exit from said housing adjacent to each other and said second outlet means is above said first outlet means.
Claim 6
Dependent Claim
34 words
The continuous extrusion machine of claim 1, wherein said chamber means includes a first pressure chamber communicating with said first outlet means and a separate second pressure chamber communicating with said second outlet means.
Claim 7
Dependent Claim
103 words
The continuous extrusion machine of claim 5, wherein said housing is generally annular and said first and second outlet means both exit to the annular periphery of said housing near an end of said housing; said blocking means being around said housing periphery; said first chamber being closed off at said housing end by an annular closing die element which includes a filament shaping element having a plurality of grooves in it and said shaping element of said die element is in said first outlet means and partially blocks extrusion thereout and directs the extruded material into the form of the first filaments.
Claim 8
Dependent Claim
20 words
The continuous extrusion machine of claim 6, wherein said die element is removably attached at said end of said housing.
References Cited (Backward Citations)
US3172154A
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US3349434A
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GB1072113A
Cited
US3358329A
Cited
US3584341A
Cited
US3700521A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |