Patent US3081659A successfully refreshed from Google Patents.
US3081659A
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Hydraulic system providing successive application of force to shear means
Assignee: Siemag Siegener Maschinenbau GmbH
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Filing: 1958-11-24
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Granted: 1963-03-19
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Expires: 1978-11-24
Abstract
No abstract record available.
Inventors
- 👤 Theobald Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:37
CPC Classifications
F; F15; F15B; F15B3/00; B; B23; B23D; B23D15/00; B23D15/12; B23D15/14; Y; Y10; Y10T; Y10T83/00; Y10T83/869; Y10T83/8735; Y10T83/8821; Y10T83/8835; Y10T83/8858; Y10T83/8864
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
IN A HYDRAULICALLY OPERATED ARRANGEMENT, IN COMBINATION, A RAM MEMBER; HYDRAULIC POSITIONING PISTON MEANS FOR MOVING SAID MEMBER FROM AN INOPERATIVE INTO A PREPARATORY POSITION; HYDRAULIC OPERATING PISTON MEANS FOR MOVING SAID MEMBER FROM SAID PREPARATORY POSITION INTO OPERATIVE POSITION; TWO INDEPENDENT HYDRAULIC PUMP MEANS; VALVE MEANS MOVABLE BETWEEN FIRST AND SECOND POSITIONS FOR CONNECTING ONE OF SAID PUMP MEANS FIRST TO SAID POSITIONING PISTON MEANS FOR MOVING SAID MEMBER FROM INOPERATIVE INTO PREPARATORY POSITION, AND FOR THEN CONNECTING SAID ONE PUMP MEANS TO SAID OPERATING PISTON MEANS; CONTROL MEANS ACTUATED BY SAID MEMBER IN SAID PREPARATORY POSITION TO MOVE SAID VALVE MEANS TO SAID SECOND POSITION; AND VALVE MEANS FOR CONNECTING THE OTHER OF SAID HYDRAULIC PUMP MEANS TO SAID OPERATING PISTON MEANS ONLY WHEN SAID MEMBER IS IN SAID PREPARATORY POSITION THEREOF, SO THAT SAID MEMBER IS MOVED FROM SAID PREPARATORY TO SAID OPERATING POSITION THEREOF BY THE COMBINED ACTION OF BOTH HYDRAULIC PUMP MEANS.
Claim 2
Dependent Claim
157 words
IN A HYDRAULICALLY OPERATED ARRANGEMENT, IN COMBINATION, A RAM MEMBER; HYDRAULIC POSITIONING PISTON MEANS FOR MOVING SAID MEMBER FROM AN INOPERATIVE INTO A PREPARATORY POSITION; HYDRAULIC OPERATING PISTON MEANS FOR MOVING SAID MEMBER FROM SAID PREPARATORY POSITION INTO OPERATIVE POSITION; TWO INDEPENDENT HYDRAULIC PUMP MEANS; VALVE MEANS MOVABLE BETWEEN FIRST AND SECOND POSITIONS FOR CONNECTING ONE OF SAID PUMP MEANS FIRST TO SAID POSITIONING PISTON MEANS FOR MOVING SAID MEMBER FROM INOPERATIVE INTO PREPARATORY POSITION, AND FOR THEN CONNECTING SAID ONE PUMP MEANS TO SAID OPERATING PISTON MEANS; CONTROL MEANS ACTUATED BY SAID MEMBER IN SAID PREPARATORY POSITION TO MOVE SAID VALVE MEANS TO SAID SECOND POSITION; AND VALVE MEANS FOR CONNECTING THE OTHER OF SAID HYDRAULIC PUMP MEANS TO SAID OPERATING PISTON MEANS ONLY WHEN SAID MEMBER IS IN SAID PREPARATORY POSITION THEREOF, SO THAT SAID MEMBER IS MOVED FROM SAID PREPARATORY TO SAID OPERATING POSITION THEREOF BY THE COMBINED ACTION OF BOTH HYDRAULIC PUMP 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) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |