US3830046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cane harvesters
Assignee: AGCO Ltd
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Filing: 1972-10-05
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Granted: 1974-08-20
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Expires: 1992-10-05
Abstract
Abstract A trash removal system for a chopper-type cane harvester comprising a vertical axis fan to suck trash from a cascade of cane billets and trash. The trash passes out of the machine through a discharge duct. The duct has a series of fixed helical vanes to remove the rotational component of movement of the trash.
Inventors
- 👤 G Rollitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:14
CPC Classifications
A; A01; A01D; A01D45/00; A01D45/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
145 words
A cane harvester having a trash removal zone and a cleaning mechanism for removing trash from cane pieces passing through the trash removal zone characterized by an axial flow fan mounted on the harvester adjacent to the trash removal zone for pulling air through the cane pieces passing through said trash removal zone, a duct mounted on the harvester with an inlet end adjacent to the axial flow fan for directing air and entrained trash away from the axial flow fan and a plurality of vanes mounted in the duct for reducing the rotational component of movement given to the air and entrained trash by the axial flow fan, each of said vanes including a portion which increases in width from near zero at the end of the vane toward the duct inlet to prevent trash entrained in the air from sticking on the vanes.
Claim 2
Dependent Claim
145 words
A cane harvester having a trash removal zone and a cleaning mechanism for removing trash from cane pieces passing through the trash removal zone characterized by an axial flow fan mounted on the harvester adjacent to the trash removal zone for pulling air through the cane pieces passing through said trash removal zone, a duct mounted on the harvester with an inlet end adjacent to the axial flow fan for directing air and entrained trash away from the axial flow fan and a plurality of vanes mounted in the duct for reducing the rotational component of movement given to the air and entrained trash by the axial flow fan, each of said vanes including a portion which increases in width from near zero at the end of the vane toward the duct inlet to prevent trash entrained in the air from sticking on the vanes.
Claim 3
Dependent Claim
26 words
The cane harvester cleaning mechanism of claim 1 including a cowl mounted adjacent to the duct for deflecting the air and entrained trash leaving the duct.
Claim 4
Dependent Claim
17 words
The cane harvester cleaning mechanism of claim 1 wherein each of the vanes includes a helical portion.
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) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |