Patent US3564883A successfully refreshed from Google Patents.
US3564883A
Expired / Lapsed
US
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Hydraulic press control
Assignee: Cincinnati Shaper Co
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Filing: 1968-07-30
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Granted: 1971-02-23
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Expires: 1988-07-30
Abstract
Abstract A HYDRAULIC PRESS CONTROL HAVING A LOAD CELL OR TRANSDUCER ARRANGED TO MEASURE THE TRUE LOAD APPLIED BY THE TOOLING TO THE PART BEING PRESSED. HYDRAULIC FLUID IS AUTOMATICALLY SUPPLIED TO EITHER END OF THE CYLINDER AS DICATED BY THE LOAD CELL OUTPUT, TO ACHIEVE AND MAINTAIN AN ACCURATE LOAD ON THE PART DURING THE HOLDING CYCLE, EVEN WHERE THIS LOAD IS LESS THAN THE WEIGHT OF THE PLATEN AND DIE, AND WHERE THE PART MAY CHANGE DIMENSIONALLY DURING THE HOLDING CYCLE.
Inventors
- 👤 Carl W Koors
- 👤 John J Erhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:10
CPC Classifications
B; B21; B21J; B21J9/00; B21J9/10; B21J9/12; B21J9/20; B30; B30B; B30B15/00; B30B15/16; B30B15/22; B30B15/26
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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |