US3352540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drag-line winch
Assignee: E WOLFF MASCHINENFABRIK und EISENGIESSEREI G M B H Firma
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Filing: 1966-06-21
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Granted: 1967-11-14
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Expires: 1986-06-21
Abstract
No abstract record available.
Inventors
- 👤 Schlechter Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:36
CPC Classifications
B; B66; B66D; B66D1/00; B66D1/26; B66D2700/00; B66D2700/01; B66D2700/0125; B66D2700/0166; B66D2700/0175
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
A DRAG-LINE WINCH, COMPRISNG A FRAME; A SHAFT ROTATABLY JOURNALED IN SAID FRAME AT A CENTRAL PORTION OF THE SHAFT; A PAIR OF CABLE REELS COAXIAL WITH SAID SHAFT AND JOURNALED ON OPPOSITE END THEREOF FOR INDEPENDENT ROTATION THEREABOUT; A GENERALLY CUP-SHAPED CARRIER MEMBER COAXIALLY RIGID WITH EACH OF SAID REELS, SAID MEMBER HAVING AN END WALL EXTENDING GENERALLY TRANSVERSELY OF SAID SHAFT BEYOND A RESPECTIVE EXTREMITY THEREOF AND AN APETURED ANNULAR PERIPHERAL WALL SURROUNDING SAID EXTREMITY; A CLUTCH MECHANISM FOR EACH REEL INCLUDING A DISK RIGID WITH THE RESPECTIVE EXTREMITY OF THE SHAFT AND CO-OPERATING COUPLING MEANS SUPPORTED ON THE RESPECTIVE END WALL, EACH OF SAID COUPLING MEANS INCLUDING A PAIR OF AXIALLY SHIFTABLE BRAKE SHOES IN SAID MEMBER FLANKING EACH OF SAID DISKS AND ENGAGEABLE THEREWITH WHILE BEING PROVIDE WITH A FLUID-RESPONSIVE ACTUATING ELEMENT FOR SAID SHOES INCLUDING A HYDRAULIC CYLINDER HAVING AN INPUT CONNECTION AT A LOCATION OF SAID END WALL IN LINE WITH THE SHAFT AXIS; A SOURCE OF HYDRAULIC FLUID FOR EACH OF SAID CYLINDER PROVIDED WITH RESPECTIVE CONDUIT TERMINATING
Claim 2
Dependent Claim
175 words
A DRAG-LINE WINCH, COMPRISNG A FRAME; A SHAFT ROTATABLY JOURNALED IN SAID FRAME AT A CENTRAL PORTION OF THE SHAFT; A PAIR OF CABLE REELS COAXIAL WITH SAID SHAFT AND JOURNALED ON OPPOSITE END THEREOF FOR INDEPENDENT ROTATION THEREABOUT; A GENERALLY CUP-SHAPED CARRIER MEMBER COAXIALLY RIGID WITH EACH OF SAID REELS, SAID MEMBER HAVING AN END WALL EXTENDING GENERALLY TRANSVERSELY OF SAID SHAFT BEYOND A RESPECTIVE EXTREMITY THEREOF AND AN APETURED ANNULAR PERIPHERAL WALL SURROUNDING SAID EXTREMITY; A CLUTCH MECHANISM FOR EACH REEL INCLUDING A DISK RIGID WITH THE RESPECTIVE EXTREMITY OF THE SHAFT AND CO-OPERATING COUPLING MEANS SUPPORTED ON THE RESPECTIVE END WALL, EACH OF SAID COUPLING MEANS INCLUDING A PAIR OF AXIALLY SHIFTABLE BRAKE SHOES IN SAID MEMBER FLANKING EACH OF SAID DISKS AND ENGAGEABLE THEREWITH WHILE BEING PROVIDE WITH A FLUID-RESPONSIVE ACTUATING ELEMENT FOR SAID SHOES INCLUDING A HYDRAULIC CYLINDER HAVING AN INPUT CONNECTION AT A LOCATION OF SAID END WALL IN LINE WITH THE SHAFT AXIS; A SOURCE OF HYDRAULIC FLUID FOR EACH OF SAID CYLINDER PROVIDED WITH RESPECTIVE CONDUIT TERMINATING
References Cited (Backward Citations)
US3055456A
Cited
US3291450A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |