US3239083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic grabs for use in ground levelling operations
Assignee: Poclain SA
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Filing: 1964-06-23
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Granted: 1966-03-08
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Expires: 1984-06-23
Abstract
No abstract record available.
Inventors
- 👤 Guinot Gabriel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:48
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/30; E02F3/302; E02F3/308
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
206 words
A HYDRAULIC GRAB ADAPTED FOR GROUND LEVELLING OPERATIONS, COMPRISING AN OSCILLATABLE JIB HAVING A FREE END, A BEAM ARTICULATED TO SAID END OF THE OSCILLATABLE JIB, A TOOL PIVOTALLY SUPPORTED FROM THE BEAM AND HAVING AN ANGULAR POSITION RELATIVE TO THE GROUND, MEANS COUPLED TO SAID TOOL, BEAM AND JIB FOR CONTROLLING THE ANGULAR POSITION OF THE TOOL RELATIVE TO THE GROUND WHILE THE BEAM IS OSCILLATING ON THE JIB, SAID MEANS COMPRISING A FIRST ROCKING LEVER ARTICULATED TO THE BEAMS AND A SECOND ROCKING LEVER ARTICULATED TO THE JIB, AND THREE LINKS, THE FIRST OF WHICH IS PIVOTALLY CONNECTED TO THE TOOL AND TO THE FIRST ROCKING LEVER, THE SECOND BEING PIVOTALLY CONNECTED TO BOTH ROCKING LEVERS, WHILE THE THIRD LINK IS PIVOTALLY CONNECTED TO THE SECOND ROCKING LEVER AND TO THE BEAM, SAID FIRST LEVER HAVING AN AXIS OF ARTICULATION WHERE IT IS PIVOTALLY CONNECTED TO THE BEAM WHICH IS DISPOSED IN THE VICINITY OF THE PIVOTAL CONNECTION BETWEEN THE TOOL AND THE BEAM, SAID SECOND ROCKING LEVER HAVING AN AXIS OF ARTICULATION WHERE IT IS PIVOTALLY CONNECTED TO THE JIB WHICH IS DISPOSED IN SPACED RELATION WITH THE LOCATION WHERE THE BEAM IS PIVOTALLY CONNECTED TO THE JIB BUT IN THE VICINITY THEREOF.
Claim 2
Dependent Claim
206 words
A HYDRAULIC GRAB ADAPTED FOR GROUND LEVELLING OPERATIONS, COMPRISING AN OSCILLATABLE JIB HAVING A FREE END, A BEAM ARTICULATED TO SAID END OF THE OSCILLATABLE JIB, A TOOL PIVOTALLY SUPPORTED FROM THE BEAM AND HAVING AN ANGULAR POSITION RELATIVE TO THE GROUND, MEANS COUPLED TO SAID TOOL, BEAM AND JIB FOR CONTROLLING THE ANGULAR POSITION OF THE TOOL RELATIVE TO THE GROUND WHILE THE BEAM IS OSCILLATING ON THE JIB, SAID MEANS COMPRISING A FIRST ROCKING LEVER ARTICULATED TO THE BEAMS AND A SECOND ROCKING LEVER ARTICULATED TO THE JIB, AND THREE LINKS, THE FIRST OF WHICH IS PIVOTALLY CONNECTED TO THE TOOL AND TO THE FIRST ROCKING LEVER, THE SECOND BEING PIVOTALLY CONNECTED TO BOTH ROCKING LEVERS, WHILE THE THIRD LINK IS PIVOTALLY CONNECTED TO THE SECOND ROCKING LEVER AND TO THE BEAM, SAID FIRST LEVER HAVING AN AXIS OF ARTICULATION WHERE IT IS PIVOTALLY CONNECTED TO THE BEAM WHICH IS DISPOSED IN THE VICINITY OF THE PIVOTAL CONNECTION BETWEEN THE TOOL AND THE BEAM, SAID SECOND ROCKING LEVER HAVING AN AXIS OF ARTICULATION WHERE IT IS PIVOTALLY CONNECTED TO THE JIB WHICH IS DISPOSED IN SPACED RELATION WITH THE LOCATION WHERE THE BEAM IS PIVOTALLY CONNECTED TO THE JIB BUT IN THE VICINITY THEREOF.
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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |