US3278058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hoisting machine
Assignee: YUMBO
•
Filing: 1965-05-18
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Granted: 1966-10-11
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Expires: 1985-05-18
Abstract
No abstract record available.
Inventors
- 👤 William D Symmank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:24
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/20; E02F9/22; B; B66; B66C; B66C13/00; B66C13/18; E02F3/00; E02F3/04; E02F3/28; E02F3/30; E02F3/301; E02F3/308; E02F3/36; E02F3/40; E02F3/413; E02F3/4135; E02F3/4136; E02F9/08; E02F9/0808; B66C2700/00; B66C2700/06; B66C2700/062
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
212 words
A HOISTING MACHINE ADAPTED TO WORK AS A LOADER, CRANE OR EXCAVATOR, COMPRISING A PLATFORM MOVABLE IN TRANSLATION AND ADAPTED TO SWIVEL ABOUT A VERTICAL AXIS, A BOOM CARRIED BY SAID PLATFORM AND PIVOTED THERETO ABOUT A HORIZONTAL AXIS, AN ARM CONSISTING OF TWO HINGEDLY INTERCONNECTED SECTIONS, NAMELY AN INNER SECTION PIVOTALLY CONNECTED TO THE FREE END OF SAID BOOM AND AN OUTER SECTION CARRYING AN OPERATING TOOL, AND FIRST, SECOND AND THIRD JACK MEANS OPERATIVE FOR CONTROLLING THE ANGULAR DISPLACEMENT OF SAID BOOM IN RELATION TO SAID PLATFORM, THE ANGULAR DISPLACEMENT OF SAID ARM IN RELATION TO SAID BOOM, AND THE RELATIVE ANGULAR POSITION OF SAID INNER AND OUTER SECTIONS OF SAID ARM, SAID THIRD JACK MEANS CONSISTING OF A DOUBLE ACTING HYDRAULIC CYLINDER FED THROUGH A DISTRIBUTOR HAVING TWO WORKING POSITIONS IN WHICH THE OPPOSITE POWER CHAMBERS OF SAID CYLINDER ARE ISOLATED FROM EACH OTHER AND RESPECTIVELY CONNECTED TO A FLUID SUPPLY CIRCUIT AND TO A FLUID DISCHARGE CIRCUIT, A LOCKING POSITION IN WHICH SAID POWER CHAMBERS ARE ISOLATED FROM EACH OTHER AND FROM SAID CIRCUITS, AND A NEUTRAL POSITION IN WHICH EACH OF SAID POWER CHAMBERS IS CONNECTED TO BOTH OF SAID CIRCUITS, THEREBY ALLOWING FOR FREE ANGULAR DISPLACEMENT OF SAID OUTER SECTION IN RELATION TO SAID INNER SECTION.
Claim 2
Dependent Claim
212 words
A HOISTING MACHINE ADAPTED TO WORK AS A LOADER, CRANE OR EXCAVATOR, COMPRISING A PLATFORM MOVABLE IN TRANSLATION AND ADAPTED TO SWIVEL ABOUT A VERTICAL AXIS, A BOOM CARRIED BY SAID PLATFORM AND PIVOTED THERETO ABOUT A HORIZONTAL AXIS, AN ARM CONSISTING OF TWO HINGEDLY INTERCONNECTED SECTIONS, NAMELY AN INNER SECTION PIVOTALLY CONNECTED TO THE FREE END OF SAID BOOM AND AN OUTER SECTION CARRYING AN OPERATING TOOL, AND FIRST, SECOND AND THIRD JACK MEANS OPERATIVE FOR CONTROLLING THE ANGULAR DISPLACEMENT OF SAID BOOM IN RELATION TO SAID PLATFORM, THE ANGULAR DISPLACEMENT OF SAID ARM IN RELATION TO SAID BOOM, AND THE RELATIVE ANGULAR POSITION OF SAID INNER AND OUTER SECTIONS OF SAID ARM, SAID THIRD JACK MEANS CONSISTING OF A DOUBLE ACTING HYDRAULIC CYLINDER FED THROUGH A DISTRIBUTOR HAVING TWO WORKING POSITIONS IN WHICH THE OPPOSITE POWER CHAMBERS OF SAID CYLINDER ARE ISOLATED FROM EACH OTHER AND RESPECTIVELY CONNECTED TO A FLUID SUPPLY CIRCUIT AND TO A FLUID DISCHARGE CIRCUIT, A LOCKING POSITION IN WHICH SAID POWER CHAMBERS ARE ISOLATED FROM EACH OTHER AND FROM SAID CIRCUITS, AND A NEUTRAL POSITION IN WHICH EACH OF SAID POWER CHAMBERS IS CONNECTED TO BOTH OF SAID CIRCUITS, THEREBY ALLOWING FOR FREE ANGULAR DISPLACEMENT OF SAID OUTER SECTION IN RELATION TO SAID INNER SECTION.
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) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |