US3089375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically actuated piercing unit
Assignee: Individual
•
Filing: 1959-08-10
•
Granted: 1963-05-14
•
Expires: 1979-08-10
Abstract
No abstract record available.
Inventors
- 👤 Floyd M Williamson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:48
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/002; Y; Y10; Y10T; Y10T83/00; Y10T83/869; Y10T83/8759; Y10T83/8776; Y10T83/8785; Y10T83/8788; Y10T83/8821; Y10T83/8858
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
184 words
A HYDRAULIC SYSTEM FOR A HYDRAULICALLY ACTUATED PIERCING UNIT INCLUDING A PUNCH, AID SYSTEM COMPRISING A HYDRAULIC WORK CYLINDER, A PISTON IN SAID WORK CYLINDER OPERABLE IN RESPONSE TO HYDRAULIC FLUID PRESSURE IN SAID WORK CYLINDER TO MOVE IN OINE DIRECTION TOWARD ITS EXTENDED POSITION TO EFFECT THE WORKING STROKE OF THE PUNCH, A SPRING FOR RETRACTING SAID PISTON, CAN ACTUATING CYLINDER HAVING A PISTON THEREIN, AN OIL SUPPLY TANK, MEANS FOR MAINTAINING THE OIL IN SAID TANK UNDER A PREDETERMINED PRESSURE, A HYDRAULIC PRESSURE LINE LEADING FROM SAID SUPPLY TANK TO SAID ACTUATING CYLINDER FOR SUPPLYING OIL THERETO AT SAID PREDETERMINED PRESSURE, A CHECK VALVE IN SAID LINE, PASSAGE MEANS PROVIDING A COMMUNICATION BETWEEN SAID WORK CYLINDER AND SAID ACTUATING CYLINDER, AN EXHAUST PASSAGE LEADING FROM SAID WORK CYLINDER BACK TO SUPPLY TANK, MEANS EXTERNAL OF THE HYDRAULIC SYSTEM FOR APPLYING A FORCE TO MOVE THE PISTON IN SAID ACTUATING CYLINDER TO INCREASE THE PRESSURE OF THE OIL THEREIN ABOVE SAID PREDETERMINED PRESSURE AND TO DISCHARGE OIL FROM SAID ACTUATING CYLINDER INTO SAID PASSAGE MEANS, AND VALVE MEANS INTERPOSED IN SAID PASSAGE MEANS
Claim 2
Dependent Claim
184 words
A HYDRAULIC SYSTEM FOR A HYDRAULICALLY ACTUATED PIERCING UNIT INCLUDING A PUNCH, AID SYSTEM COMPRISING A HYDRAULIC WORK CYLINDER, A PISTON IN SAID WORK CYLINDER OPERABLE IN RESPONSE TO HYDRAULIC FLUID PRESSURE IN SAID WORK CYLINDER TO MOVE IN OINE DIRECTION TOWARD ITS EXTENDED POSITION TO EFFECT THE WORKING STROKE OF THE PUNCH, A SPRING FOR RETRACTING SAID PISTON, CAN ACTUATING CYLINDER HAVING A PISTON THEREIN, AN OIL SUPPLY TANK, MEANS FOR MAINTAINING THE OIL IN SAID TANK UNDER A PREDETERMINED PRESSURE, A HYDRAULIC PRESSURE LINE LEADING FROM SAID SUPPLY TANK TO SAID ACTUATING CYLINDER FOR SUPPLYING OIL THERETO AT SAID PREDETERMINED PRESSURE, A CHECK VALVE IN SAID LINE, PASSAGE MEANS PROVIDING A COMMUNICATION BETWEEN SAID WORK CYLINDER AND SAID ACTUATING CYLINDER, AN EXHAUST PASSAGE LEADING FROM SAID WORK CYLINDER BACK TO SUPPLY TANK, MEANS EXTERNAL OF THE HYDRAULIC SYSTEM FOR APPLYING A FORCE TO MOVE THE PISTON IN SAID ACTUATING CYLINDER TO INCREASE THE PRESSURE OF THE OIL THEREIN ABOVE SAID PREDETERMINED PRESSURE AND TO DISCHARGE OIL FROM SAID ACTUATING CYLINDER INTO SAID PASSAGE MEANS, AND VALVE MEANS INTERPOSED IN SAID PASSAGE MEANS
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |