US3590995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grain cleaner
Assignee: Individual
•
Filing: 1969-08-11
•
Granted: 1971-07-06
•
Expires: 1989-08-11
Abstract
Abstract A machine for cleaning grain, the machine comprising a rotating, perforated cone into which uncleaned grain is placed; air blown upwardly through the perforations cause chaff and foreign particles to be blown upward through a fan, while the relatively heavier grain is thrown by centrifugal force sideward out of the cone in a clean condition.
Inventors
- 👤 Lyle F Truckenbrod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:14
CPC Classifications
B; B07; B07B; B07B4/00; B07B4/08; B02; B02B; B02B1/00; B02B1/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
143 words
In a grain cleaner, the combination of a frame, a stationary sheet metal housing carried on said frame, a stationary cone at the lower end of said housing, an apex at the lower end of said cone being provided with an outlet spout, an intake pipe through a side of said housing, said pipe communicating with a grain cleaning mechanism comprising a horizontal upper and lower bar providing bearing means for a vertical shaft, a pair of pulleys secured to said shaft for providing rotational drive to said shaft, a fan blade and a rotatable cone also secured to said shaft, said blade being positioned over said rotatable cone, the apex of said rotatable cone being positioned downward, a fin and blade structure at the apex of said rotatable cone and a discharge end of said intake pipe communicating with said cone apex.
Claim 2
Dependent Claim
143 words
In a grain cleaner, the combination of a frame, a stationary sheet metal housing carried on said frame, a stationary cone at the lower end of said housing, an apex at the lower end of said cone being provided with an outlet spout, an intake pipe through a side of said housing, said pipe communicating with a grain cleaning mechanism comprising a horizontal upper and lower bar providing bearing means for a vertical shaft, a pair of pulleys secured to said shaft for providing rotational drive to said shaft, a fan blade and a rotatable cone also secured to said shaft, said blade being positioned over said rotatable cone, the apex of said rotatable cone being positioned downward, a fin and blade structure at the apex of said rotatable cone and a discharge end of said intake pipe communicating with said cone apex.
Claim 3
Dependent Claim
66 words
The combination as set forth in claim 1, wherein said rotatable cone includes a conical sidewall perforated by openings smaller than the size of grain kernels, and an upper edge of said conical sidewall being surmounted by upstanding fins spaced apart to allow said grain kernels to pass therethrough and into a space between the rotatable cone and said housing and then down to said spout.
Claim 4
Dependent Claim
65 words
The combination as set forth in claim 2 wherein a first V-belt pulley is provided between a power source and said fan, and a separate second V-belt pulley is provided between a power source and said rotatable cone, whereby said fan and cone are rotatable independent of each other through a variable speed mechanism so as to regulate the amount of air and centrifugal force.
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |