US3602230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust-settling device
Assignee: Case LLC
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Filing: 1969-01-10
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Granted: 1971-08-31
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Expires: 1989-01-10
Abstract
Abstract An apparatus for settling the dust and chaff discharged with the straw from the cylinder of an axial flow combine before releasing this material into the atmosphere. An elongated settling chamber having a material inlet opening and a bottom conveyor moving from the inlet opening toward an exit opening that is vented to the atmosphere.
Inventors
- 👤 William H Knapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:03
CPC Classifications
A; A01; A01F; A01F12/00; A01F12/54; A01F12/18; A01F12/184
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
156 words
In an axial flow combine comprising a tubular casing formed about a generally horizontal axis and having a forward end through which unthreshed material is received, a grain permeable bottom through which the threshed grain can pass and a rearward end, a straw discharge opening formed in the rearward end of said tubular casing; an elongated rotor journaled for rotation about said axis within said casing, said elongated rotor having straw discharge paddles that function to propel material through said straw discharge opening; an elongated settling chamber having a front wall and a rear wall, conduit means connecting said straw discharge opening with said elongated settling chamber adjacent said front wall, a bottom conveyor extending from said front wall toward said rear wall, said bottom conveyor having a terminal edge between said front and rear walls, said terminal edge defining with said rear wall an exit opening through which the conveyor is adopted to discharge material.
Claim 2
Dependent Claim
156 words
In an axial flow combine comprising a tubular casing formed about a generally horizontal axis and having a forward end through which unthreshed material is received, a grain permeable bottom through which the threshed grain can pass and a rearward end, a straw discharge opening formed in the rearward end of said tubular casing; an elongated rotor journaled for rotation about said axis within said casing, said elongated rotor having straw discharge paddles that function to propel material through said straw discharge opening; an elongated settling chamber having a front wall and a rear wall, conduit means connecting said straw discharge opening with said elongated settling chamber adjacent said front wall, a bottom conveyor extending from said front wall toward said rear wall, said bottom conveyor having a terminal edge between said front and rear walls, said terminal edge defining with said rear wall an exit opening through which the conveyor is adopted to discharge material.
Claim 3
Dependent Claim
27 words
the invention as set forth in claim 1 wherein there is a straw-spreading means below said exit opening disposed to spread material falling through said exit opening.
Claim 4
Dependent Claim
56 words
The invention as set forth in claim 1 wherein said bottom conveyor comprises an endless belt mounted upon a front roller adjacent said front wall and a rear roller adjacent said terminal edge, and means driving said endless belt in a direction such that the upper rung moves from said front wall towards said rear wall.
Claim 5
Dependent Claim
37 words
The invention as set forth in claim 2 wherein said elongated settling chamber is offset from said tubular casing and said straW-spreading means is arranged to produce a spread pattern that is skewed toward said tubular casing.
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) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |