US4831940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal separation system for incinerators
Assignee: US ENVIRONMENTAL Inc
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Filing: 1988-04-25
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Granted: 1989-05-23
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Expires: 2008-04-25
Abstract
Abstract The invention relates to a system for separating metals and ashes from the residue remaining after incineration by positioning a magnetic drum between six (6) and twelve (12) inches from the conveyor transporting said residue to result in the maximum amount of reclaimed metal.
Inventors
- 👤 Frank Franza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:49
CPC Classifications
B; B03; B03C; B03C1/00; B03C1/02; B03C1/10; B03B; B03B9/00; B03B9/04; C; C22; C22B; C22B1/00; C22B1/005; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
111 words
A system for separating metals from incinerator residue waste comprising four conveyor systems the first providing means for transporting the incinerator residue waste, the second having magnetic means abutting the end of the first conveyor system for separating metals from the incinerator waste at the end of the first conveyor system, said magnetic means having adjustable spacings between six (6) and twelve (12) inches from said first conveyor system for increasing the amount of metal reclaimed from said incinerator residue waste to a maximum, the third having means for separating ashes from metals in addition to means for transporting metals and the fourth having means for separating ashes and unburned waste.
Claim 2
Independent Claim
149 words
A system for separating metals from incinerator residue comprising first conveyor means for transporting said incinerator residue, second conveyor means abutting and variably positioned in proximity to the discharge end of said first conveyor means, said second conveyor means having magnetic means incorporated therein for separating metals and ashes adhering to said metals from the ashes and unburned waste of the incinerator residue transported on said first conveyor means, said magnetic means being positioned in proximity to the discharge end of said first conveyor means and variably spaced between six (6) and twelve (12) inches from said first conveyor means, third conveyor means having means for receiving and separating said metals and the ashes adhering to the metal separated by said magnetic means, and fourth conveyor means for receiving and separating the ashes and unburned waste of the incinerator residue from the discharge end of said first conveyor means.
Claim 3
Independent Claim
149 words
A system for separating metals from incinerator residue comprising first conveyor means for transporting said incinerator residue, second conveyor means abutting and variably positioned in proximity to the discharge end of said first conveyor means, said second conveyor means having magnetic means incorporated therein for separating metals and ashes adhering to said metals from the ashes and unburned waste of the incinerator residue transported on said first conveyor means, said magnetic means being positioned in proximity to the discharge end of said first conveyor means and variably spaced between six (6) and twelve (12) inches from said first conveyor means, third conveyor means having means for receiving and separating said metals and the ashes adhering to the metal separated by said magnetic means, and fourth conveyor means for receiving and separating the ashes and unburned waste of the incinerator residue from the discharge end of said first conveyor means.
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) | 1992-05-22 | 1992-11-21 | 1993-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-22 | 1996-11-21 | 1997-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-22 | 2000-11-21 | 2001-05-23 | $7700.00 | Window Closed / Lapsed |