US3621518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing batches of elastomeric compositions at the highest temperature consistent with the nature of the compositions
Assignee: Pirelli and C SpA
•
Filing: 1970-03-25
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Granted: 1971-11-23
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Expires: 1990-03-25
Abstract
Abstract CHARGES OF ELASTOMERIC MATERIAL OF PREDETERMINED UNIFORM WEIGHT(S) FOR INTRODUCTION INTO MOLDS ARE PRODUCED BY HEATING AND FORMING ELASTOMERIC MATERIAL INTO AN INTERMEDIATE ARTICLE OF SUBSTANTIALLY UNIFORM CROSS SECTION, SENSING THE LENGTH OF THE ARTICLE, AND CUTTING THE ARTICLE INTO INDIVIDUAL CHARGES OF PREDETERMINED LENGTH EMPLOYING PHOTOCELL ACTUATED APPARATUS TO SENSE AND CUT THE LENGTHS OF THE PERFORM.
Inventors
- 👤 Achille Gallizia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:14
CPC Classifications
B; B29; B29B; B29B11/00; B29B11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |