US3788048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trash separator for sugar cane harvesters
Assignee: AGCO Ltd
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Filing: 1971-06-30
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Granted: 1974-01-29
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Expires: 1991-06-30
Abstract
Abstract A trash separation apparatus for a sugar cane harvester including an extractor fan for drawing light-weight material from an airborne stream of chopped cane, an outlet for air from the extractor fan, and a rotatable element to remove light-weight material from the air passing through the outlet. The extractor fan is mounted in a housing so as to draw air up through an airborne stream of chopped cane being conveyed through the housing by flipper rollers and to force the air through an outlet in the housing. Light-weight crop material is removed from the airborne stream of chopped cane by the air drawn through the airborne stream by the extractor fan. The light-weight crop material is removed from the air passing through the extractor fan by a rotatable wheel with a plurality of spokes. The spokes catch the light weight trash and throw it outwardly into trash discharge chutes.
Inventors
- 👤 R Stiff
- 👤 K Ruback
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:02
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/12; B01D45/14; A; A01; A01D; A01D45/00; A01D45/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
214 words
An apparatus for removing relatively light-weight material from an airborne stream containing heavier material, comprising a housing through which said airborne stream is to pass, conveyor means mounted in the lower portion of the housing for agitating the stream of material and keeping it airborne, an extractor fan mounted in the housing for drawing air up through the conveyor means and for drawing light-weight material from the airborne stream, a duct connected to the housing for directing air and light-weight material away from the extractor fan, a first outlet from the duct for directing air and light-weight material away from the extractor fan, a rotatable element including a hub and a plurality of spokes extending generally radially from the hub positioned in the duct between the extractor fan and the first outlet from the duct, power means to rotate the rotatable element whereby light-weight material is thrown outwardly by centrifugal action and separated from the air from the extractor fan before it passes through the first outlet, and a inlet to the duct communicating with the housing between the extractor fan and the first outlet for the passage of a portion of the air from the extractor fan and the light-weight material separated from air passing through the first outlet by the rotatable element.
Claim 2
Independent Claim
214 words
An apparatus for removing relatively light-weight material from an airborne stream containing heavier material, comprising a housing through which said airborne stream is to pass, conveyor means mounted in the lower portion of the housing for agitating the stream of material and keeping it airborne, an extractor fan mounted in the housing for drawing air up through the conveyor means and for drawing light-weight material from the airborne stream, a duct connected to the housing for directing air and light-weight material away from the extractor fan, a first outlet from the duct for directing air and light-weight material away from the extractor fan, a rotatable element including a hub and a plurality of spokes extending generally radially from the hub positioned in the duct between the extractor fan and the first outlet from the duct, power means to rotate the rotatable element whereby light-weight material is thrown outwardly by centrifugal action and separated from the air from the extractor fan before it passes through the first outlet, and a inlet to the duct communicating with the housing between the extractor fan and the first outlet for the passage of a portion of the air from the extractor fan and the light-weight material separated from air passing through the first outlet by the rotatable element.
Claim 3
Dependent Claim
24 words
Apparatus according to claim 7, wherein the rotatable element and the extractor fan are coaxially mounted and are driven by a single drive motor.
Claim 4
Dependent Claim
28 words
The Apparatus according to claim 1 wherein the second outlet from the duct includes at least one open ended chute for directing light-weight material away from the apparatus.
References Cited (Backward Citations)
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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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |