US3274645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extruder-roller die
Assignee: Farrel Corp
•
Filing: 1963-11-20
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Granted: 1966-09-27
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Expires: 1983-11-20
Abstract
No abstract record available.
Inventors
- 👤 Donald C Chase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:56
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/35; B29B; B29B7/00; B29B7/74; B29B7/7476; B29B7/7495; B29C48/03; B29C48/07; B29C48/08; B29C43/00; B29C43/22; B29C43/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
AN EXTRUDER-ROLLER DIE COMPRISING AN EXTRUDER HEAD DEFINING AN EXTRUDER DIE CAVITY THERETHROUGH BETWEEN A DISCHARGE ORIFICE AND AN INLET ORIFICE ADAPTED TO RECEIVE MATERIAL FORCED THEREIN IN A PLASTIC STATE, A PAIR OF COOPERATING ROLLS DEFINING A NIP THEREBETWEEN, SAID EXTRUDER HEAD AND SAID DISCHARGE ORIFICE BEING ARRANGED TO INTRODUCE THE MATERIAL ONTO SAID ROLLS ADJACENT THE NIP THEREOF FOR FORMING SAID MATERIAL BY SAID NIP, SAID DISCHARGE ORIFICE BEING OF SUBSTANTIALLY GREATER HORIZONTAL AND LESSER VERTICAL DIMENSION THAN SAID INLET ORIFICE, THE VERTICAL DIMENSION OF THE DISCHARGE ORIFICE AT THE CENTER THEREOF BEING LESSER THAN THE VERTICAL DIMENSION OF THE DISCHARGE ORIFICE AT THE ENDS THEREOF SO THAT MATERIAL INTRODUCED INTO THE CAVITY THROUGH SAID INLET ORIFICE IS UNIFORMLY SPREAD ALONG THE WIDTH OF THE CAVITY AND MATERIAL IS DISCHARGED FROM SAID DISCHARGE ORIFICE ON TO SAID ROLLS WITH SUBSTANTIALLY UNIFORM CHARACTERISTIC, AND SAID ROLLS ACT TO PULL MATERIAL THROUGH SAID CAVITY AND DISCHARGE ORIFICE TO SAID NIP.
Claim 2
Dependent Claim
160 words
AN EXTRUDER-ROLLER DIE COMPRISING AN EXTRUDER HEAD DEFINING AN EXTRUDER DIE CAVITY THERETHROUGH BETWEEN A DISCHARGE ORIFICE AND AN INLET ORIFICE ADAPTED TO RECEIVE MATERIAL FORCED THEREIN IN A PLASTIC STATE, A PAIR OF COOPERATING ROLLS DEFINING A NIP THEREBETWEEN, SAID EXTRUDER HEAD AND SAID DISCHARGE ORIFICE BEING ARRANGED TO INTRODUCE THE MATERIAL ONTO SAID ROLLS ADJACENT THE NIP THEREOF FOR FORMING SAID MATERIAL BY SAID NIP, SAID DISCHARGE ORIFICE BEING OF SUBSTANTIALLY GREATER HORIZONTAL AND LESSER VERTICAL DIMENSION THAN SAID INLET ORIFICE, THE VERTICAL DIMENSION OF THE DISCHARGE ORIFICE AT THE CENTER THEREOF BEING LESSER THAN THE VERTICAL DIMENSION OF THE DISCHARGE ORIFICE AT THE ENDS THEREOF SO THAT MATERIAL INTRODUCED INTO THE CAVITY THROUGH SAID INLET ORIFICE IS UNIFORMLY SPREAD ALONG THE WIDTH OF THE CAVITY AND MATERIAL IS DISCHARGED FROM SAID DISCHARGE ORIFICE ON TO SAID ROLLS WITH SUBSTANTIALLY UNIFORM CHARACTERISTIC, AND SAID ROLLS ACT TO PULL MATERIAL THROUGH SAID CAVITY AND DISCHARGE ORIFICE TO SAID NIP.
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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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |