US3268950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable tread rubber extruding die
Assignee: Mccreary Tire and Rubber Co
•
Filing: 1964-12-23
•
Granted: 1966-08-30
•
Expires: 1984-12-23
Abstract
No abstract record available.
Inventors
- 👤 Floyd C Rankin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:07
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/52; B29C; B29C48/00; B29C48/03; B29C48/07; B29C48/12; B29C48/25; B29C48/30; B29C48/305; B29C48/31; B29C48/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
AN ADJUSTABLE DIE FOR EXTRUDING A STRIP OF TIRE TREAD RUBBER, COMPRISING A DIE BLOCK PROVIDED WITH A HORIZONTAL EXTRUSION SLOT THERETHROUGH FOR PASSAGE OF THE TREAD RUBBER UNDER PRESSURE, A VERTICAL DIE PLATE MOUNTED ABOVE THE EXIT END OF SAID SLOT, MEANS FOR ADJUSTING THE PLATE BODILY DOWNWARD ACROSS THE SLOT TO REDUCE THE HEIGHT OF THE SLOT EXIT, SAID PLATE BEING FORMED FROM TWO LONGITUDINALLY ALIGNED PLATE SECTIONS HAVING OVERLAPPING INNER ENDS CONNECTED BY A HORIZONTAL PIVOT, AND MEANS FOR ADJUSTING SAID PIVOT VERTICALLY RELATIVE TO THE OUTER ENDS OF SAID PLATE SECTIONS TO CHANGE THE LONGITUDINAL SHAPE OF THE BOTTOM OF THE PLATE, WHEREBY TO PROVIDE A PREDETERMINED SHAPE FOR THE TOP OF THE TREAD STRIP ISSUING FROM SAID SLOT.
Claim 2
Dependent Claim
123 words
AN ADJUSTABLE DIE FOR EXTRUDING A STRIP OF TIRE TREAD RUBBER, COMPRISING A DIE BLOCK PROVIDED WITH A HORIZONTAL EXTRUSION SLOT THERETHROUGH FOR PASSAGE OF THE TREAD RUBBER UNDER PRESSURE, A VERTICAL DIE PLATE MOUNTED ABOVE THE EXIT END OF SAID SLOT, MEANS FOR ADJUSTING THE PLATE BODILY DOWNWARD ACROSS THE SLOT TO REDUCE THE HEIGHT OF THE SLOT EXIT, SAID PLATE BEING FORMED FROM TWO LONGITUDINALLY ALIGNED PLATE SECTIONS HAVING OVERLAPPING INNER ENDS CONNECTED BY A HORIZONTAL PIVOT, AND MEANS FOR ADJUSTING SAID PIVOT VERTICALLY RELATIVE TO THE OUTER ENDS OF SAID PLATE SECTIONS TO CHANGE THE LONGITUDINAL SHAPE OF THE BOTTOM OF THE PLATE, WHEREBY TO PROVIDE A PREDETERMINED SHAPE FOR THE TOP OF THE TREAD STRIP ISSUING FROM SAID SLOT.
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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |