Patent US3143924A successfully refreshed from Google Patents.
US3143924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control means for series connected cylinder drive assemblies
Assignee: Pacific Industrial Manufacturing Co
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Filing: 1962-07-17
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Granted: 1964-08-11
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Expires: 1982-07-17
Abstract
No abstract record available.
Inventors
- 👤 Eugene W Pearson
- 👤 Rolland A Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:51
CPC Classifications
B; B21; B21D; B21D5/00; B21D5/02; B30; B30B; B30B15/00; B30B15/16; B30B15/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
IN COMBINATION A PRESS BRAKE HAVING A SERIES HYDRAULIC DRIVE SYSTEM FOR THE RAM OF SAID PRESS BRAKE, SAID SYSTEM COMPRISING A PAIR OF CYLINDER DRIVE ASSEMBLIES INCLUDING A MASTER DRIVE ASSEMBLY, A SLAVE DRIVE ASSEMBLY, A SUPPLY LINE TO SAID MASTER DRIVE ASSEMBLY, A FLOW LINE FROM SAID MASTER DRIVE ASSEMBLY TO SAID SLAVE DRIVE ASSEMBLY, MEANS FOR SUPPLYING LIQUID TO SAID SERIES HYDRAULIC DRIVE SYSTEM TO SIMULTANEOUSLY DRIVE THE PISTONS OF SAID CYLINDER DRIVE ASSEMBLIES, AND MEANS FOR DEVELOPING FULL LOAD RATING FORCE INTERMEDIATE SAID SERIES CONNECTED CYLINDER DRIVE ASSEMBLIES WHILE LIMITING MAXIMUM FORCE TO EACH OF THE PISTONS OF SAID SERIES CONNECTED CYLINDER DRIVE ASSEMBLIES TO A VALUE SUBSTANTIALLY LESS THAN THE FULL LOAD RATING OF SAID PRESS BRAKE.
Claim 2
Dependent Claim
122 words
IN COMBINATION A PRESS BRAKE HAVING A SERIES HYDRAULIC DRIVE SYSTEM FOR THE RAM OF SAID PRESS BRAKE, SAID SYSTEM COMPRISING A PAIR OF CYLINDER DRIVE ASSEMBLIES INCLUDING A MASTER DRIVE ASSEMBLY, A SLAVE DRIVE ASSEMBLY, A SUPPLY LINE TO SAID MASTER DRIVE ASSEMBLY, A FLOW LINE FROM SAID MASTER DRIVE ASSEMBLY TO SAID SLAVE DRIVE ASSEMBLY, MEANS FOR SUPPLYING LIQUID TO SAID SERIES HYDRAULIC DRIVE SYSTEM TO SIMULTANEOUSLY DRIVE THE PISTONS OF SAID CYLINDER DRIVE ASSEMBLIES, AND MEANS FOR DEVELOPING FULL LOAD RATING FORCE INTERMEDIATE SAID SERIES CONNECTED CYLINDER DRIVE ASSEMBLIES WHILE LIMITING MAXIMUM FORCE TO EACH OF THE PISTONS OF SAID SERIES CONNECTED CYLINDER DRIVE ASSEMBLIES TO A VALUE SUBSTANTIALLY LESS THAN THE FULL LOAD RATING OF SAID PRESS BRAKE.
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) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |