Patent US3925199A successfully refreshed from Google Patents.
US3925199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trash removal apparatus for sugar cane harvesters
Assignee: Massey Ferguson Services NV
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Filing: 1974-10-16
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Granted: 1975-12-09
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Expires: 1994-10-16
Abstract
Abstract Trash removal apparatus for a sugar cane harvester in which an axial flow fan located in a duct sucks air through harvested cane and discharges the air vertically. An annular opening is formed in the duct close to the fan on the pressure side of the fan. Trash passing through the fan is rotated thereby and passes through said opening under the action of centrifugal forces. A volute shaped discharge duct receives the trash and discharges it in a desired direction.
Inventors
- 👤 Donald Jonathon Quick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:42
CPC Classifications
A; A01; A01D; A01D45/00; A01D45/10
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
123 words
A SUGAR CANE HARVEST INCLUDING A FRAME, CANE DIVIDING MEANS MOUNTED ON THE FRAME FOR CUTTING EACH HARVESTED CANE STICK INTO TWO OR MORE PIECES, AND TRASH REMOVAL MEANS MOUNTED ON THE FRAME FOR REMOVING TRASH FROM THE CAN PIECES THAT HAVE BEEN CUT BY THE CANE DIVIDING MEANS, THE TRASH REMOVAL MEANS COMPRISING AN AXIAL FLOW EXTRACTOR FAN CAPABLE OF DRAWING AIR THROUGH THE CANE PIECES, AND MEANS DEFINING AN AIR OUTLET ON THE PRESSURE SIDE OF THE FAN FOR RECEIVING AIR PASSING THROUGH THE FAN IN THE AXIAL DIRECTION CHATACTERIZED BY MEANS DEFINING AN ANNULAR TRASH-RECEIVING OPENING BETWEEN THE FAN AND THE OUTLET FOR RECEIVING TRASH PASSING THRUGH THE FAN TO PASS THROUGH SAID OPENING UNDER THE ACTION OF CENTRIFUGAL FORCES.
Claim 2
Dependent Claim
123 words
A SUGAR CANE HARVEST INCLUDING A FRAME, CANE DIVIDING MEANS MOUNTED ON THE FRAME FOR CUTTING EACH HARVESTED CANE STICK INTO TWO OR MORE PIECES, AND TRASH REMOVAL MEANS MOUNTED ON THE FRAME FOR REMOVING TRASH FROM THE CAN PIECES THAT HAVE BEEN CUT BY THE CANE DIVIDING MEANS, THE TRASH REMOVAL MEANS COMPRISING AN AXIAL FLOW EXTRACTOR FAN CAPABLE OF DRAWING AIR THROUGH THE CANE PIECES, AND MEANS DEFINING AN AIR OUTLET ON THE PRESSURE SIDE OF THE FAN FOR RECEIVING AIR PASSING THROUGH THE FAN IN THE AXIAL DIRECTION CHATACTERIZED BY MEANS DEFINING AN ANNULAR TRASH-RECEIVING OPENING BETWEEN THE FAN AND THE OUTLET FOR RECEIVING TRASH PASSING THRUGH THE FAN TO PASS THROUGH SAID OPENING UNDER THE ACTION OF CENTRIFUGAL FORCES.
Claim 3
Dependent Claim
27 words
A sugar cane harvester according to claim 1 characterized in that said trash-receiving opening is located immediately adjacent the fan, on the pressure side of the fan.
Claim 4
Dependent Claim
45 words
A sugar cane harvester according to claim 1 characterized in that the dimensions of the means defining the air outlet on the pressure side of the fan are such that the outlet lies within the axial projection of the circle described by the fan blades.
Claim 5
Dependent Claim
35 words
A sugar cane harvester according to claim 1 characterized in that the means defining the air outlet on the pressure side of the fan also serves to define one edge of the annular trash-receiving opening.
Claim 6
Dependent Claim
32 words
A sugar cane harvester according to claim 4 characterized in that the other edge of the annular trash-receiving opening lies outside the axial projection of the circle described by the fan blades.
Claim 7
Dependent Claim
18 words
A sugar cane harvester according to claim 5 characterized in that said other edge has a rounded profile.
Claim 8
Dependent Claim
37 words
A sugar cane harvester according to claim 1 characterized in that the means defining the outlet on the pressure side of the fan is generally trumpet-shaped and arranged with its smaller diameter end nearer to the fan.
Claim 9
Dependent Claim
35 words
A sugar cane harvester according to claim 1 characterized by a trash guide duct mounted on the harvester adjacent to the pressure side of the fan for intercepting trash passing through said annular trash-receiving opening.
Claim 10
Dependent Claim
19 words
A sugar cane harvester according to claim 8 characterized in that said trash guide duct includes a volute duct.
Claim 11
Dependent Claim
38 words
A sugar cane harvester according to claim 9 characterized in that the volute duct is mounted so as to be angularly movable about the axis of rotation of the fan to change the direction of discharge of trash.
Claim 12
Dependent Claim
20 words
A sugar cane harvester according to claim 9 characterized in that the volute duct has a curved axial cross-sectional shape.
Claim 13
Dependent Claim
60 words
A sugar cane harvester according to claim 1 characterized by a duct located on the suction side of the fan and leading to the fan characterized in that the inside edge of the duct at the end thereof adjacent the fan is of such dimensions as to lie within the axial projection of the circle described by the fan blades.
Claim 14
Dependent Claim
37 words
A sugar cane harvester according to claim 12 characterized in that inwardly-extending vanes are mounted in the duct located on the suction side of the fan for reducing rotation of air before the air intercepts the fan.
Claim 15
Dependent Claim
23 words
A sugar cane harvester according to claim 12 characterized in that the duct located on the suction side of the fan is cylindrical.
References Cited (Backward Citations)
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Cited
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US3397522A
Cited
US3630641A
Cited
US3788048A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |