US3901795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for separating magnetic and non-magnetic substances
Assignee: Continental Can Co Inc
•
Filing: 1972-11-10
•
Granted: 1975-08-26
•
Expires: 1992-11-10
Abstract
Abstract This disclosure relates to novel apparatus for and methods of separating magnetic and non-magnetic materials by conveying the same on a first of two spaced conveyors toward a magnetic separator which draws the magnetic material and deposits the same upon the second conveyor whereas the non-magnetic material drops by gravity in the gap between the conveyors. Any minor amounts of the non-magnetic material deposited upon the second conveyor are removed by a blast of air which directs the latter material toward and into the gap as well as impinges the same upon the periphery of a rotating roller from which such minor amounts of non-magnetic material are deposited into the gap between the conveyors.
Inventors
- 👤 Milbourn L Smith
- 👤 Joseph Derencius
- 👤 Robert E Grisemer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:14
CPC Classifications
B; B03; B03B; B03B9/00; B03B9/06; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/52
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
117 words
Apparatus for separating magnetically attractive and magnetically nonattractive materials comprising first means for conveying said materials along a first path, second means excluding magnetic means contiguous said first conveying means for conveying said materials along a second predetermined path generally inline with said first path, said first and second conveying means move said materials along said respective first and second paths in the generally same direction, magnetic means between said first and second conveying means for removing said magnetically attractive material along with minor amounts of said magnetically nonattractive material from said first conveying means and depositing the same upon said second conveying means, and second means for removing said minor amounts from said second conveying means.
Claim 2
Dependent Claim
117 words
Apparatus for separating magnetically attractive and magnetically nonattractive materials comprising first means for conveying said materials along a first path, second means excluding magnetic means contiguous said first conveying means for conveying said materials along a second predetermined path generally inline with said first path, said first and second conveying means move said materials along said respective first and second paths in the generally same direction, magnetic means between said first and second conveying means for removing said magnetically attractive material along with minor amounts of said magnetically nonattractive material from said first conveying means and depositing the same upon said second conveying means, and second means for removing said minor amounts from said second conveying means.
Claim 3
Dependent Claim
38 words
The apparatus as defined in claim 1 wherein said first and second conveying means are in spaced relationship to each other defining therebetween a gap into which is deposited said magnetically nonattractive material except for said minor amounts.
Claim 4
Dependent Claim
45 words
The apparatus as defined in claim 2 wherein said second removing means includes a source of moving air directed against said minor amounts of magnetically nonattractive material and toward said gap whereby the last-mentioned material is blown from said second conveying means into said gap.
Claim 5
Dependent Claim
42 words
The apparatus as defined in claim 2 wherein said first removing means includes third means for conveying said magnetically attractive material and said minor amounts of magnetically nonattractive material from said first conveying means across said gap to said second conveying means.
Claim 6
Dependent Claim
79 words
The apparatus as defined in claim 4 wherein said second conveying means has entrance and exit end portions, said removed magnetically attractive material and minor amounts of magnetically nonattractive material is deposited at said entrance end portion and thus is conveyed toward said exit end portion, and said second removing means includes means at said entrance end portion for directing a portion of said minor amounts of magnetically nonattractive material toward said first conveying means and into said gap.
Claim 7
Dependent Claim
25 words
The apparatus as defined in claim 5 including conveying means in said gap for receiving thereupon said magnetically nonattractive material and conveying the same therefrom.
Claim 8
Dependent Claim
26 words
The apparatus as defined in claim 5 wherein said directing means is a source of moving air directed against said minor amounts of magnetically nonattractive material.
Claim 9
Dependent Claim
20 words
The apparatus as defined in claim 5 wherein said directing means is a conveyor moving toward said first conveying means.
Claim 10
Dependent Claim
37 words
The apparatus as defined in claim 5 wherein said directing means is defined by a source of moving air directed against said minor Amounts of magnetically nonattractive material and a conveyor moving toward said first conveying means.
Claim 11
Dependent Claim
24 words
The apparatus as defined in claim 9 wherein said last-mentioned conveyor includes surface means having an affinity for holding thereupon said magnetically nonattractive material.
Claim 12
Dependent Claim
37 words
The apparatus as defined in claim 1 wherein said second removing means includes a source of moving air directed against said minor amounts of magnetically nonattractive material whereby the latter is blown from said second conveying means.
Claim 13
Dependent Claim
39 words
The apparatus as defined in claim 1 wherein said first removing means includes third means for conveying said magnetically attractive material and said minor amounts of magnetically nonattractive material from said first conveying means to said second conveying means.
Claim 14
Dependent Claim
21 words
The apparatus as defined in claim 1 wherein said first removing means includes means for magnetically attracting said magnetically attractive material.
Claim 15
Dependent Claim
51 words
The apparatus as defined in claim 13 wherein said attracting means is a magnet and said first removing means further includes third means partially entraining said magnet for conveying said magnetically attractive material and said minor amounts of magnetically nonattractive material from said first conveying means to said second conveying means.
Claim 16
Dependent Claim
75 words
The apparatus as defined in claim 1 wherein said second conveying means has entrance and exit end portions, said removed magnetically attractive material and minor amounts of magnetically nonattractive material is deposited at said entrance end portion and thus is conveyed toward said exit end portion, and said second removing means includes means at said entrance end portion for directing a portion of said minor amounts of magnetically nonattractive material toward said first conveying means.
Claim 17
Dependent Claim
26 words
The apparatus as defined in claim 15 wherein said directing means is a source of moving air directed against said minor amounts of magnetically nonattractive material.
Claim 18
Dependent Claim
20 words
The apparatus as defined in claim 15 wherein said directing means is a conveyor moving toward said first conveying means.
Claim 19
Dependent Claim
37 words
The apparatus as defined in claim 15 wherein said directing means is defined by a source of moving air directed against said minor amounts of magnetically nonattractive material and a conveyor moving toward said first conveying means.
Claim 20
Dependent Claim
106 words
The apparatus as defined in claim 1 wherein said second conveying means has entrance and exit end portions, said removed magnetically attractive material and minor amounts of magnetically nonattractive material is deposited at said entrance end portion and thus is conveyed toward said exit end portion, said second removing means includes means at said entrance end portion for directing a portion of said minor amounts of magnetically nonattractive material toward said first conveying means, and said second removing means further includes a source of moving air directed against said minor amounts of magnetically nonattractive material whereby a portion thereof is blown from said second conveying means.
Claim 21
Dependent Claim
131 words
The apparatus as defined in claim 1 wherein said second conveying means has entrance and exit end portions, said removed magnetically attractive material and minor amounts of magnetically nonattractive material is deposited at said entrance end portion and thus is conveyed toward said exit end portion, said second removing means includes means at said entrance end portion for directing a portion of said minor amounts of magnetically nonattractive material toward said first conveying means, and said second removing means further includes a source of moving air directed against said minor amounts of magnetically nonattractive material and toward said entrnace end portion directing means whereby a portion thereof is blown from said second conveying means upon said entrance end portion directing means and directed by the latter from said second conveying means.
Claim 22
Dependent Claim
171 words
The apparatus as defined in claim 1 wherein said seconD conveying means has entrance and exit end portions, said removed magnetically attractive material and minor amounts of magnetically nonattractive material is deposited at said entrance end portion and thus is conveyed toward said exit end portion, said second removing means includes means at said entrance end portion for directing a portion of said minor amounts of magnetically nonattractive material toward said first conveying means, and said second removing means further includes a source of moving air directed against said minor amounts of magnetically nonattractive material and toward said entrance end portion directing means whereby a portion thereof is blown from said second conveying means upon said entrance end portion directing means and directed by the latter from said second conveying means and said entrance end portion directing means is spaced above said entrance end portion whereby a portion of said minor amounts of magnetically nonattractive material is blown under said entrance end portion directing means and from said second conveying means.
Claim 23
Dependent Claim
20 words
The apparatus as defined in claim 21 wherein said directing means is a conveyor moving toward said first conveying means.
Claim 24
Dependent Claim
39 words
The apparatus as defined in claim 21 wherein said directing means is a conveyor moving toward said first conveying means, and said conveyor includes surface means having an affinity for holding thereupon said minor amounts of magnetically nonattractive material.
Claim 25
Dependent Claim
93 words
The apparatus as defined in claim 1 wherein said second conveying means has entrance and exit end portions, said removed magnetically attractive material and minor amounts of magnetically nonattractive material is deposited at said entrance end portion and thus is conveyed toward said exit end portion, and said second removing means includes means at said entrance end portion for directing a portion of said minor amounts of magnetically nonattractive material toward said first conveying means and said directing means includes surface means having an affinity for holding thereupon said last-mentioned portion of material.
Claim 26
Dependent Claim
44 words
The apparatus as defined in claim 1 wherein said second means includes surface means having an affinity for holding thereupon said minor amounts of nonattractable material, and means for rotating said surface means opposite to the direction of travel of said first conveying means.
Claim 27
Dependent Claim
14 words
The apparatus as defined in claim 1 wherein said magnetic means is an electromagnetic.
Claim 28
Dependent Claim
16 words
The apparatus as defined in claim 1 wherein said magnetic means is a roll permanent magnetic.
Claim 29
Dependent Claim
16 words
The apparatus as defined in claim 1 wherein said magnetic means is a flat permanent magnetic.
Claim 30
Dependent Claim
19 words
The apparatus as defined in claim 1 wherein said magnetic means is an electromagnetic and a roll permanent magnetic.
Claim 31
Dependent Claim
21 words
The apparatus as defined in claim 1 wherein said magnetic means is a roll permanent magnetic and a flat permanent magnetic.
Claim 32
Dependent Claim
15 words
The apparatus as defined in claim 30 wherein said magnetic means further includes an electromagnetic.
Claim 33
Independent Claim
94 words
A method of separating relatively heavy and light material comprising the steps of performing a magnetic separation on the heavy and light material, depositing the magnetically separated heavy and light material upon a surface at a first position, moving the deposited material toward a second position in a first direction, directing air above and along the material in a second direction opposite the first direction whereby the light material will be blown in the second direction, collecting the light material thus blown, and thereafter further conveying the collected light material in the second direction.
Claim 34
Independent Claim
94 words
A method of separating relatively heavy and light material comprising the steps of performing a magnetic separation on the heavy and light material, depositing the magnetically separated heavy and light material upon a surface at a first position, moving the deposited material toward a second position in a first direction, directing air above and along the material in a second direction opposite the first direction whereby the light material will be blown in the second direction, collecting the light material thus blown, and thereafter further conveying the collected light material in the second direction.
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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |