US3869054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bucket having a mobile back
Assignee: Poclain SA
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Filing: 1974-02-15
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Granted: 1975-03-04
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Expires: 1994-02-15
Abstract
Abstract A bucket for a public works machine which bucket has a shell including a sole plate and a back plate, the latter being movable between a closed position and an open position relative to the shell, in the latter of which positions the back plate defines with the sole plate a passage for unloading the bucket, a connecting member being provided on the back plate and movable relative thereto between a connected position in which it forms a part of the wall of the bucket in extension of the sole plate and back plate and a retracted position in which it is substantially clear of the path of material when falling through the passage.
Inventors
- 👤 Rene V Moreau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:36
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/40; E02F3/407
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
279 words
Bucket having a mobile back comprising: a shell, the said mobile back, which is mounted to pivot on the said shell about an axis, and a position adjustment organ, which is linked between the said back and the said shell to adjust their relative pivoting in at least two positions, in the first of which the said back bears against the shell and co-operates with the latter to form the complete bucket provided with a loading opening, and in the second of which this back is distant from the rear face of the shell on the side opposite to the loading opening relative to this shell, this rear face itself being opposite to the said loading opening, this rear face of the shell and the internal face of the said back in the second position defining therebetween a passage, in particular for evacuation of the material which may be contained in the shell, the back itself comprising a main back which is mounted to pivot relative to the shell about the said axis, and a connecting element which is arranged on the main back retractably relative to the internal face of the said main back, remote from the said axis, and which can occupy two positions, one known as the connected position, in which it forms a substantially contiguous extension of the internal faces of the shell and of the main back, and one known as the retracted position, in which it is effectively retracted relative to the plane of the internal face of this main back, and a second position adjustment organ being linked between the said connecting element and one of the said shell and main back.
Claim 2
Dependent Claim
279 words
Bucket having a mobile back comprising: a shell, the said mobile back, which is mounted to pivot on the said shell about an axis, and a position adjustment organ, which is linked between the said back and the said shell to adjust their relative pivoting in at least two positions, in the first of which the said back bears against the shell and co-operates with the latter to form the complete bucket provided with a loading opening, and in the second of which this back is distant from the rear face of the shell on the side opposite to the loading opening relative to this shell, this rear face itself being opposite to the said loading opening, this rear face of the shell and the internal face of the said back in the second position defining therebetween a passage, in particular for evacuation of the material which may be contained in the shell, the back itself comprising a main back which is mounted to pivot relative to the shell about the said axis, and a connecting element which is arranged on the main back retractably relative to the internal face of the said main back, remote from the said axis, and which can occupy two positions, one known as the connected position, in which it forms a substantially contiguous extension of the internal faces of the shell and of the main back, and one known as the retracted position, in which it is effectively retracted relative to the plane of the internal face of this main back, and a second position adjustment organ being linked between the said connecting element and one of the said shell and main back.
Claim 3
Dependent Claim
44 words
Bucket in accordance with claim 1, in which the connecting element has a cylindrical internal face with a continuous curvature and in that in the connected position the said cylindrical face is arranged substantially in the extension of the internal face of the shell.
Claim 4
Dependent Claim
31 words
Bucket in accordance with claim 2, in which in addition the cylindrical face is arranged substantially in the extension of the internal face of the main back, in the connected position.
Claim 5
Dependent Claim
42 words
Bucket in accordance with claim 1, in which the connecting element is mounted to pivot on the main back about another axis which is parallel to the said axis and which is arranged on the main back remote from the said axis.
Claim 6
Dependent Claim
40 words
Bucket in accordance with claim 1, in which the second position adjustment organ comprises the position adjustment organ itself and of a stop for limiting the retraction of the connecting element relative to the internal face of the main back.
Claim 7
Dependent Claim
100 words
Bucket in accordance with claim 4, in which the other position adjustment organ comprises the position adjustment organ itself and a stop for limiting the retraction of the connecting element relative to the internal face of the main back, and in which the stop is rigidly attached to the main back, on which it is so arranged that the plane parallel to the said other axis and containing the ends of the internal face of the connecting element is situated substantially in the plane of the interNal face of the main back in the retracted position of this connecting element.
Claim 8
Dependent Claim
17 words
Bucket in accordance with claim 1, in which in known manner the adjustment organ comprises a ram.
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) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |