US3194049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Top-pressure forging hammer
Assignee: Eumuco AG fuer Maschinenbau
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Filing: 1961-10-19
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Granted: 1965-07-13
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Expires: 1981-10-19
Abstract
No abstract record available.
Inventors
- 👤 Riemenschneider Fritz
- 👤 Hassel Harald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:53
CPC Classifications
B; B21; B21J; B21J7/00; B21J7/20; B21J7/22; B21J7/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A TOP PRESSURE FORGING HAMMER COMPRISING A VERTICALLY RECIPROCATING RAM HAVING A DOWNWARDLY FORGING STROKE. A CYLINDER DISPOSED ABOVE SAID RAM, A PISTON IN SAID CYLINDER, A PISTON ROD CONNECTING SAID RAM TO SAID PISTON WITH SAID PISTON HAVING A LARGER UPPER FACE SURFACE THAN A LOWER FACE SURFACE THEREOF, A HYDRAULIC DRIVE SYSTEM CONNECTED TO SAID CYLINDER, SAID HYDRAULIC DRIVE SYSTEM INCLUDING A CONSTANT DELIVERY PUMP PERMANENTLY CONNECTED TO SAID CYLINDER FOR PROVIDING FLUID ACTING ON SAID PISTON LOWER FACE, TO MAINTAIN A CONSTANT UPWARD FORCE ON SAID RAM, AN OSCILLATORY HYDRAULIC SYSTEM INCLUDING A RELATIVELY LARGE CONTAINER COMPLETELY FILLED WITH LIQUID AND IN OPEN COMMUNICATION WITH SAID CYLINDER INTERPOSED IN SAID HYDRAULIC DRIVE SYSTEM AND RECEIVING HYDRAULIC FLUID FROM SAID HYDRAULIC DRIVE SYSTEM, SAID LIQUID UNDER PRESSURE ACTING AS A HYDRAULIC SPRING, VALVE MEANS FOR CONTROLLING FLOW OF HYDRAULIC FLUID FROM SAID CONTAINER TO SAID CYLINDER FOR REACTION ON SAID UPPER PISTON FACE, AND A
Claim 2
Dependent Claim
157 words
A TOP PRESSURE FORGING HAMMER COMPRISING A VERTICALLY RECIPROCATING RAM HAVING A DOWNWARDLY FORGING STROKE. A CYLINDER DISPOSED ABOVE SAID RAM, A PISTON IN SAID CYLINDER, A PISTON ROD CONNECTING SAID RAM TO SAID PISTON WITH SAID PISTON HAVING A LARGER UPPER FACE SURFACE THAN A LOWER FACE SURFACE THEREOF, A HYDRAULIC DRIVE SYSTEM CONNECTED TO SAID CYLINDER, SAID HYDRAULIC DRIVE SYSTEM INCLUDING A CONSTANT DELIVERY PUMP PERMANENTLY CONNECTED TO SAID CYLINDER FOR PROVIDING FLUID ACTING ON SAID PISTON LOWER FACE, TO MAINTAIN A CONSTANT UPWARD FORCE ON SAID RAM, AN OSCILLATORY HYDRAULIC SYSTEM INCLUDING A RELATIVELY LARGE CONTAINER COMPLETELY FILLED WITH LIQUID AND IN OPEN COMMUNICATION WITH SAID CYLINDER INTERPOSED IN SAID HYDRAULIC DRIVE SYSTEM AND RECEIVING HYDRAULIC FLUID FROM SAID HYDRAULIC DRIVE SYSTEM, SAID LIQUID UNDER PRESSURE ACTING AS A HYDRAULIC SPRING, VALVE MEANS FOR CONTROLLING FLOW OF HYDRAULIC FLUID FROM SAID CONTAINER TO SAID CYLINDER FOR REACTION ON SAID UPPER PISTON FACE, AND A
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |