Patent US3612273A successfully refreshed from Google Patents.
US3612273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separator
Assignee: Individual
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Filing: 1969-04-21
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Granted: 1971-10-12
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Expires: 1989-04-21
Abstract
Abstract A cylindrical separator comprises a cylinder formed of any suitable material with openings formed in its interior wall. The openings determine the threshold size of the items being separated. Items are inserted into one end of the cylinder which is mounted on an angle with the horizontal and is rotated. Those items which are smaller than the diameter of the openings in the interior wall of the cylinder are carried upwardly by its rotation and are discharged at the top onto a conveyor which carries them away. Those items which are larger than the diameter of the openings remain in the cylinder at the bottom and slowly move to the low end where they are discharged onto another conveyor.
Inventors
- 👤 Wallace R Pritchett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:12
CPC Classifications
B; B07; B07B; B07B13/00; B07B13/04; B07B13/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
263 words
A gravity separator for separating discrete items of a generally uniform nature into at least two groups, one of which groups contains items larger than a selected dimension and the other of which groups contains items smaller than that dimension, said separator comprising a slanted bed and a unitary cylinder removably supported for rotation on said bed, said bed comprising a frame, a plurality of legs supporting said frame on a slant, means for bracing said legs to provide a rigid support, a plurality of wheels mounted on said frame for rotatably carrying said cylinder, and means for driving at least one of said wheels in rotation, said wheels frictionally rotating said cylinder, said unitary cylinder comprising at least a pair of rigid grooved cylindrical end members, a drum arranged with its ends resting against said end members, and brace means distributed about said cylinder and connected to said end members to draw said end members toward each other against the ends of said drum to form a unitary cylindrical structure which readily can be lifted off said supporting wheels, the grooves in said end members being shaped to accommodate said wheels so that said cylinder is supported thereon by gravity, said drum having pockets formed in the insides surface thereof, said pockets being dimensioned readily to receive and discharge items of said other group as said cylinder rotates, and means within said cylinder for receiving items of said other group as said cylinder rotates and for maintaining the separated items of said other group separate from the items of said one group.
Claim 2
Dependent Claim
263 words
A gravity separator for separating discrete items of a generally uniform nature into at least two groups, one of which groups contains items larger than a selected dimension and the other of which groups contains items smaller than that dimension, said separator comprising a slanted bed and a unitary cylinder removably supported for rotation on said bed, said bed comprising a frame, a plurality of legs supporting said frame on a slant, means for bracing said legs to provide a rigid support, a plurality of wheels mounted on said frame for rotatably carrying said cylinder, and means for driving at least one of said wheels in rotation, said wheels frictionally rotating said cylinder, said unitary cylinder comprising at least a pair of rigid grooved cylindrical end members, a drum arranged with its ends resting against said end members, and brace means distributed about said cylinder and connected to said end members to draw said end members toward each other against the ends of said drum to form a unitary cylindrical structure which readily can be lifted off said supporting wheels, the grooves in said end members being shaped to accommodate said wheels so that said cylinder is supported thereon by gravity, said drum having pockets formed in the insides surface thereof, said pockets being dimensioned readily to receive and discharge items of said other group as said cylinder rotates, and means within said cylinder for receiving items of said other group as said cylinder rotates and for maintaining the separated items of said other group separate from the items of said one group.
Claim 3
Dependent Claim
32 words
The gravity separator defined in claim 1, wherein the pockets in said drum are perforations through said drum, said drum further including an outer covering serving as a bottom to said perforations.
Claim 4
Dependent Claim
18 words
The gravity separator defined in claim 1 wherein said pockets are uniform in transverse size through their depths.
Claim 5
Dependent Claim
18 words
The gravity separator defined in claim 1, wherein said pockets have a varying transverse dimension through their depths.
Claim 6
Dependent Claim
75 words
The gravity separator defined in claim 1, wherein said cylinder comprises a plurality of separate drums placed in tandem with an end member at each end of said cylinder and an end member between each pair of drums, said drums comprising pockets of differing sizes so that said separator performs a series of separating functions within the same cylinder, and means contained within said cylinder for maintaining separate each of the separate groups of items.
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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |