Patent US3616672A successfully refreshed from Google Patents.
US3616672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dummy block and/or billet loading device for extrusion presses
Assignee: Gulf & Western Ind Prod Co
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Filing: 1969-08-19
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Granted: 1971-11-02
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Expires: 1989-08-19
Abstract
Abstract THE DRAWINGS SHOW A LONG STROKE EXTRUSION PRESS PROVIDED WITH MECHANISMS FOR SUPPLYING DUMMY BLOCKS AND BILLETS TO THE PRESSURE CONTAINER. THE MECHANISM INCLUDE TUBULAR, OPEN ENDED, HOLDER ASSEMBLIES HAVING AN INTERNAL DIAMETER TO RECEIVE THE BILLETS OR DUMMY BLOCKS. THE HOLDERS ARE OPEN ALONG ONE SIDE THERETHROUGHOUT AN ARCUATE OR CIRCUMFERENTIAL EXTENT OF SLIGHTLY LESS THAN 180* TO MAINTAIN BILLETS OR DUMMY BLOCKS THEREIN. HOWEVER, THE CHORDAL EXTENT OF THE OPENING IS GREATER THAN THE DIAMETER OF THE PRESS RAM TO PERMIT THE HOLDER TO RETRACT OVER THE RAM.
Inventors
- 👤 Alois J Moos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:09
CPC Classifications
B; B21; B21C; B21C26/00; B21C23/00; B21C23/21; B21C33/00
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) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |