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US3584751A
Expired / Lapsed
US
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Mechanical earth working machine
Assignee: Poclain SA
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Filing: 1969-07-30
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Granted: 1971-06-15
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Expires: 1989-07-30
Abstract
Abstract This invention relates to a mechanical earth working machine, such as a mechanical excavator or loader, so designed as to permit rectilinear movement of the tool, the height and direction of travel of the tool also being selectively adjustable depending upon the work to be carried out, each of the said adjustments being produced automatically.
Inventors
- 👤 Jean-Pierre B Bellart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:35
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/30; E02F3/32; E02F3/301; E02F3/36; E02F3/42; E02F3/43; E02F3/435; E02F3/437
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
148 words
An earth working machine comprising a turret, an earth working tool, a jib pivotally mounted on the turret, jib and tool operating means comprising first and second deformable parallelograms, said first and second parallelograms having major sides which are equal and are adapted to be oriented simultaneously according to equal and opposite angles by means of an angular orientation mechanism comprising two rams, said first parallelogram extending from and connected to said turret, said second parallelogram supporting said tool on its outermost end, means connected between said deformable parallelograms for adjusting the height of the tool with respect to the ground, and pivotal connection means connecting the two major sides of said second parallelogram supporting the tool to the means for adjusting the height of the tool with respect to the ground wherein the means for adjusting the height of the tool is of the parallelogram displacement type.
Claim 2
Dependent Claim
148 words
An earth working machine comprising a turret, an earth working tool, a jib pivotally mounted on the turret, jib and tool operating means comprising first and second deformable parallelograms, said first and second parallelograms having major sides which are equal and are adapted to be oriented simultaneously according to equal and opposite angles by means of an angular orientation mechanism comprising two rams, said first parallelogram extending from and connected to said turret, said second parallelogram supporting said tool on its outermost end, means connected between said deformable parallelograms for adjusting the height of the tool with respect to the ground, and pivotal connection means connecting the two major sides of said second parallelogram supporting the tool to the means for adjusting the height of the tool with respect to the ground wherein the means for adjusting the height of the tool is of the parallelogram displacement type.
Claim 3
Dependent Claim
23 words
A machine according to claim 1, characterized in that the means for adjusting the height of the tool consists of a deformable parallelogram.
Claim 4
Dependent Claim
24 words
A machine according to claim 1, characterized in that the rams of the angular orientation mechanism are of the hydraulic type fed in series.
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) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |