Patent US3302445A successfully refreshed from Google Patents.
US3302445A
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Hydraulic drop forging device
Assignee: Hydraulik GmbH
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Filing: 1964-12-02
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Granted: 1967-02-07
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Expires: 1984-12-02
Abstract
No abstract record available.
Inventors
- 👤 Muller Ernst
- 👤 Hertl Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:46
CPC Classifications
B; B21; B21J; B21J9/00; B21J9/10; B21J9/12; B21J13/00; B21J13/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
IN A HYDRAULIC FORGING PRESS FOR HIGH PRESSURE FORCES HAVING A DRIVING PISTON, A WORKING BEAM ATTACHED TO SAID PISTON, AN UPPER AND LOWER CROSS BEAM CONNECTED WITH EACH OTHER BY TENSION ELEMENTS, THE IMPROVEMENT COMPRISING: A FORGED RING CONNECTED TO SAID UPPER CROSS BEAM AND ARRANGED AS A JACKET OF THE WORKING CYLINDER, SAID RING HAVING AN INWARDLY PROJECTING COLLAR AT THE INTERIOR THEREOF AND BEING CONNECTED TO SAID UPPER CROSS BEAM TO DISTRIBUTE PRESSURES FROM SAID WORKING PISTON DIRECTLY TO THE CROSS BEAM, SAID WORKING PISTON BEING SLIDABLE IN SAID RING AND HAVING A PORTION EXTENDING INTO SAID UPPER CROSS BEAM AND BEING GUIDED THEREBY.
Claim 2
Dependent Claim
107 words
IN A HYDRAULIC FORGING PRESS FOR HIGH PRESSURE FORCES HAVING A DRIVING PISTON, A WORKING BEAM ATTACHED TO SAID PISTON, AN UPPER AND LOWER CROSS BEAM CONNECTED WITH EACH OTHER BY TENSION ELEMENTS, THE IMPROVEMENT COMPRISING: A FORGED RING CONNECTED TO SAID UPPER CROSS BEAM AND ARRANGED AS A JACKET OF THE WORKING CYLINDER, SAID RING HAVING AN INWARDLY PROJECTING COLLAR AT THE INTERIOR THEREOF AND BEING CONNECTED TO SAID UPPER CROSS BEAM TO DISTRIBUTE PRESSURES FROM SAID WORKING PISTON DIRECTLY TO THE CROSS BEAM, SAID WORKING PISTON BEING SLIDABLE IN SAID RING AND HAVING A PORTION EXTENDING INTO SAID UPPER CROSS BEAM AND BEING GUIDED THEREBY.
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) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |