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Patent US3674408A successfully refreshed from Google Patents.
US3674408A
Expired / Lapsed
US
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Molding machine for foam-plastic articles
Assignee: Mannesmann Demag Krauss Maffei GmbH
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Filing: 1970-06-05
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Granted: 1972-07-04
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Expires: 1990-06-05
Abstract
Abstract THE HALVES OF A SPLIT MOLD TO BE FILLED WITH FOAMABLE POLYMERIC MATERIAL ARE SUPPORTED ON A FRAME CARRYING A HYDRAULIC OR PNEUMATIC JACK FOR OPENING AND CLOSING THE MOLD, THE FRAME BEING SWINGABLE THROUGH AT LEAST 90* ABOUT AN AXIS TRANSVERSE TO THE DIRECTION OF MOLD MOVEMENT TO ALLOW FOR A POSITIONING OF PORTIONS OF THE PARTING LINE OF THE MOLD HALVES AT DIFFERENT LEVELS FACILITATING THE ESCAPE OF GASES TRAPPED IN POCKETS OF THE CAVITY OR CAVITIES. FOR THE SAME PURPOSE, THE MOLD HALVES ARE ALSO ADJUSTABLY POSITIONED ON THE FRAME IN A MANNER ENABLING THEIR ROTATION-CONTINUOUS ON IN STEPS-THROUGH A SIMILAR ANGLE ABOUT FAN AXIS EXTENDING IN THE DIRECTION OF MOLD MOVEMENT.
Inventors
- 👤 Siegfried Baumgartner
- 👤 Bernd Fries
- 👤 Rolf Lidl
- 👤 Gunter Zippe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:06
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/20
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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |