US3115086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic control for pneumatic counterbalance of mechanical press
Assignee: Schneider Electric USA Inc
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Filing: 1962-11-27
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Granted: 1963-12-24
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Expires: 1982-11-27
Abstract
No abstract record available.
Inventors
- 👤 Vincent W Stimmel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:32
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/0064
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
124 words
AN APPARATUS FOR COUNTERBALANCING THE FORCE OF AN ELECTRIC MOTOR DRIVEN RECIPROCATING MEMBER, COMPRISING PNEUMATIC PISTON AND CYLINDER MEANS OPERATIVELY CONNECTED TO THE MEMBER FOR RESISTING MOVEMENT OF THE MEMBER IN ONE DIRECTION BY COMPRESSION OF THE AIR IN THE PISTON AND CYLINDER MEANS BY OPERATION OF THE PISTON AND CYLINDER MEANS BY THE MEMBER, AND ASSISTING MOVEMENT OF THE MEMBER IN THE OPPOSITE DIRECTION BY EXPANSION OF THE AIR SO COMPRESSED, SAMPLING MEANS FOR PERIODICALLY SAMPLING THE CURRENT BEING DRAWN BY THE MOTOR FOR EACH DIRECTION OF MOVEMENT OF THE MEMBER, AND MEANS RESPONSIVE TO THE SAMPLING MEANS FOR ADJUSTING THE AIR PRESSURE OF THE COUNTERBALANCING MEANS TO REDUCE THE CURRENT BEING DRAWN WHEN THE CURRENT IS IN EXCESS OF A PREDETERMINED AMOUNT.
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) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |