US3667883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shoe bottom molding apparatus
Assignee: Desma Werke GmbH
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Filing: 1968-06-10
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Granted: 1972-06-06
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Expires: 1988-06-10
Abstract
Abstract INJECTION MOLDING APPARATUS EMBODYING AN OPEN-TOP MOLD, A ROTATABLE SUPPORT FOR MOUNTING TWO LASTS FOR ALTERNATE DISPOSITION AT A PREDETERMINED DISTANCE ABOVE THE OPEN TOP OF THE MOLD, A CARRIAGE MOUNTING THE ROTATABLE SUPPORT FOR MOVEMENT VERTICALLY WITH RESPECT TO THE MOLD TO BRING THE BOTTOM OF THE LAST LOCATED ABOVE THE MOLD INTO ENGAGEMENT THEREWITH FOR INJECTION OF BOTTOMFORMING MATERIAL, AND MEANS SUPPORTING THE CARRIAGE ON A COLUMN FOR HEIGHTWISE ADJUSTMENT RELATIVE TO THE MOLD TO ACCOMMODATE LASTS OF DIFFERENT HEIGHT.
Inventors
- 👤 Herbert Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:10
CPC Classifications
B; B29; B29D; B29D35/00; B29D35/0009; B29D35/0018; B29D35/0027
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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |