US3570230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tree gripping clamp and boom and control system therefor
Assignee: Case LLC
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Filing: 1968-07-09
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Granted: 1971-03-16
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Expires: 1988-07-09
Abstract
Abstract A BOOM ASSEMBLY FOR A TREE SHAKER APPARATUS WHEREIN THE ASSEMBLY INCLUDES A HYDRAULIC CYLINDER WITHIN WHICH A PAIR OF PISTONS ARE MOUNTED IN AXIALLY SPACED RELATION TO DEFINE A PLURALITY OF FLUID CHAMBERS. A TREE GRIPPING CLAMP INCLUDES A PAIR OF JAWS CONNECTED RESPECTIVELY TO THE PAIR OF PISTONS. HYDRAULIC CONTROL MEANS ARE OPERATIVE TO MOVE THE CLAMP STRUCTURE RELATIVE TO THE CYLINDER AND TO MOVE THE JAWS RELATIVE TO EACH OTHER BY CONTROLLING THE FLUID PRESSURE WITHIN THE FLUID CHAMBERS. MEANS ARE PROVIDED FOR ROTATING THE CLAMP STRUCTURE RELATIVE TO THE BOOM ASSEMBLY.
Inventors
- 👤 Stuart D Pool
- 👤 Edward Svereika
- 👤 Calvin P Rickerd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:46
CPC Classifications
A; A01; A01D; A01D46/00; A01D46/26
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) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |