Patent US4031652A successfully refreshed from Google Patents.
Patent US3604055A successfully refreshed from Google Patents.
US3604055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion die
Assignee: AMOCO FABRICS COMPANY A CORP OF DE
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Filing: 1969-05-05
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Granted: 1971-09-14
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Expires: 1989-05-05
Abstract
Abstract Extrusion die for extruding plastic netting and consisting of inner and outer die members rotatable relative to each other and having surfaces defining die orifices wherein the surfaces of the die members having the die orifices are cylindrical and not in contact with each other, the mechanical thrust in the direction of the axis of the die being borne by frustoconical portions of the inner and outer die members.
Inventors
- 👤 John A Mchardy
- 👤 Thomas Urquhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:24
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/345; B29C48/03; B29C48/05; B29C48/09; B29C48/10; B29C48/13; B29C48/32; B29C48/33; B29L; B29L2028/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A die assembly for extruding plastic netting consisting of inner and outer die portions rotatable relative to each other and each having slotted cooperating extrusion surfaces defining a circumferentially extending series of extrusion die orifices wherein the die orifices in each set are opposite directions, the netting is formed, the improvement wherein the slotted cooperating extrusion surfaces of the inner and outer die portions defining the die orifices are vertically disposed and are essentially parallel throughout their cross section and are not in contact, and the mechanical thrust in the direction of the axis of the die is borne by separate cooperating tapered frustoconical thrust surfaces of the inner and outer die portions removed from the extrusion surfaces thereof.
Claim 2
Dependent Claim
119 words
A die assembly for extruding plastic netting consisting of inner and outer die portions rotatable relative to each other and each having slotted cooperating extrusion surfaces defining a circumferentially extending series of extrusion die orifices wherein the die orifices in each set are opposite directions, the netting is formed, the improvement wherein the slotted cooperating extrusion surfaces of the inner and outer die portions defining the die orifices are vertically disposed and are essentially parallel throughout their cross section and are not in contact, and the mechanical thrust in the direction of the axis of the die is borne by separate cooperating tapered frustoconical thrust surfaces of the inner and outer die portions removed from the extrusion surfaces thereof.
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) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |