US3292211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-adjusting extrusion die
Assignee: Individual
•
Filing: 1963-05-27
•
Granted: 1966-12-20
•
Expires: 1983-05-27
Abstract
No abstract record available.
Inventors
- 👤 Charles A Strange
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:23
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/305; B29C48/31; B29C48/313; B29C48/03; B29C48/07; B29C48/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A DIE FOR EXTRUDING A VISCOUS MELT IN SHEET FORM, SAID DIE INCLUDING A CHAMBER HAVING AN OUTLET PASSAGE THEREFROM, THE OUTLET PASSAGE BEING AN ELONGATED SLOT, THE WIDTH OF WHICH EXTENDS LENGTHWISE OF THE CHAMBER, WALLS FORMING A TOP AND BOTTOM OF THE OUTLET PASSAGE AND TERMINATING IN LIPS AT THE DISCHARGE END OF THE PASSAGE, AT LEAST ONE OF THE PASSAGE WALLS BEING MOVABLE WITH RESPECT TO THE OTHER TO ADJUST THE SPACING OF THE LIPS FROM ONE ANOTHER AND THE RESULTING THICKNESS OF THE EXTRUDED SHEET, MEANS FOR APPLYING FORCE TO THE MOVABLE WALL NEAR THE LIP END OF THE MOVABLE WALL OF THE PASSAGE AND IN A DIRECTION TO MOVE THE LIPS CLOSER TOGETHER, SAID MEANS INCLUDING A FORCE-TRANSMITTING OPERATIVE CONNECTION CONNECTED WITH A PART OF A WALL OF THE CHAMBER THAT IS EXPOSED TO PRESSURE OF THE VISCOUS MELT IN THE CHAMBER, SAID FORCE-TRANSMITTING CONNECTION BEING CONSTRUCTED AND ARRANGED TO MOVE THE LIPS CLOSER TOGETHER IN RESPONSE TO INCREASE IN PRESSURE IN THE CHAMBER.
Claim 2
Dependent Claim
169 words
A DIE FOR EXTRUDING A VISCOUS MELT IN SHEET FORM, SAID DIE INCLUDING A CHAMBER HAVING AN OUTLET PASSAGE THEREFROM, THE OUTLET PASSAGE BEING AN ELONGATED SLOT, THE WIDTH OF WHICH EXTENDS LENGTHWISE OF THE CHAMBER, WALLS FORMING A TOP AND BOTTOM OF THE OUTLET PASSAGE AND TERMINATING IN LIPS AT THE DISCHARGE END OF THE PASSAGE, AT LEAST ONE OF THE PASSAGE WALLS BEING MOVABLE WITH RESPECT TO THE OTHER TO ADJUST THE SPACING OF THE LIPS FROM ONE ANOTHER AND THE RESULTING THICKNESS OF THE EXTRUDED SHEET, MEANS FOR APPLYING FORCE TO THE MOVABLE WALL NEAR THE LIP END OF THE MOVABLE WALL OF THE PASSAGE AND IN A DIRECTION TO MOVE THE LIPS CLOSER TOGETHER, SAID MEANS INCLUDING A FORCE-TRANSMITTING OPERATIVE CONNECTION CONNECTED WITH A PART OF A WALL OF THE CHAMBER THAT IS EXPOSED TO PRESSURE OF THE VISCOUS MELT IN THE CHAMBER, SAID FORCE-TRANSMITTING CONNECTION BEING CONSTRUCTED AND ARRANGED TO MOVE THE LIPS CLOSER TOGETHER IN RESPONSE TO INCREASE IN PRESSURE IN THE CHAMBER.
References Cited (Backward Citations)
US2168889A
Cited
US3067464A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |