Patent US5906321A successfully refreshed from Google Patents.
US5906321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-ferrous metals cleaning system
Assignee: Duos Engineering USA Inc
•
Filing: 1997-02-27
•
Granted: 1999-05-25
•
Expires: 2017-02-27
Abstract
Abstract A cleaning system for non-ferrous metals for the removal of ash residue and dirt from metals derived from a municipal waste combustor includes an infeed chute for receiving the dirty metals and water from a clean water source. The water and metals are combined in a rotating tumbler for removal of the ash and dirt which is directed to a holding tank. The clean metal is engaged by a rotating upwardly angled drum that includes an internal helix. The metals are moved by the helix to an outlet and pass through a second spray of downwardly directed clean water for further cleaning of the metal. Motor-driven idlers and associated bearings provide for rotation and positioning of the apparatus. A water pump has an inlet from the holding tank and is used to maintain proper level control. An agitation pump prevents the collected ash and debris from settling in the tank.
Inventors
- 👤 Ronald T. Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:35
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/48; B03B5/56
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
178 words
A system for cleaning of dirty non-ferrous metals derived from an ash stream output from a municipal waste combustor comprising a tumbler means having an outlet passageway for imparting rotary movement to metals and water being fed into said tumbler means, drain means for removing water and debris separated from the metals from said tumbler means, mounting means for rotatably mounting said tumbler means, drive means connected to said tumbler means for rotating said tumbler means, an elongate hollow cylindrical drum having an inlet and an outlet, said drum inlet being connected to said outlet passageway of said tumbler means for receiving metals from said tumbler means, said mounting means rotatably mounting said drum, said drum having an inner surface, engagement means attached to said drum inner surface for engaging metals received in said drum, said engagement means including a helical thread for movement of metals from said inlet of said drum to said outlet of said drum , said helical thread extending substantially between said outlet passageway of said tumbler means and said outlet of said drum.
Claim 2
Independent Claim
178 words
A system for cleaning of dirty non-ferrous metals derived from an ash stream output from a municipal waste combustor comprising a tumbler means having an outlet passageway for imparting rotary movement to metals and water being fed into said tumbler means, drain means for removing water and debris separated from the metals from said tumbler means, mounting means for rotatably mounting said tumbler means, drive means connected to said tumbler means for rotating said tumbler means, an elongate hollow cylindrical drum having an inlet and an outlet, said drum inlet being connected to said outlet passageway of said tumbler means for receiving metals from said tumbler means, said mounting means rotatably mounting said drum, said drum having an inner surface, engagement means attached to said drum inner surface for engaging metals received in said drum, said engagement means including a helical thread for movement of metals from said inlet of said drum to said outlet of said drum , said helical thread extending substantially between said outlet passageway of said tumbler means and said outlet of said drum.
Claim 3
Dependent Claim
80 words
The system as defined in claim 1 wherein said tumbler means includes a cylindrical member having a body, said body including an inner surface for defining an interior space and an input and output passageway in said body for directing metals respectively into and out of said member, said member including a plurality of spaced drain passageways remote from said input and output passageways formed in said body for removing water and debris removed from metals from said interior space.
Claim 4
Dependent Claim
36 words
The system as defined in claim 2 wherein said member includes blade members affixed to said inner surface and extending laterally inwardly for engaging and imparting rotary movement to metals and water passing into said drum.
Claim 5
Dependent Claim
18 words
The system as defined in claim 1 further including water spraying means for spraying water into said drum.
Claim 6
Dependent Claim
43 words
The system as defined in claim 1 wherein said mounting means includes frame means for mounting said drum to locate said outlet of said drum vertically higher than said inlet to permit gravity drainage of debris and water from metals within said drum.
Claim 7
Dependent Claim
31 words
The system as defined in claim 5 further including water spraying means located adjacent said outlet of said drum for spraying water into said drum for further cleaning of metals therein.
Claim 8
Independent Claim
189 words
A system for cleaning of dirty non-ferrous metals derived from an ash stream output from a municipal waste combustor comprising a tumbler means for imparting rotary movement to metals and water being fed into said tumbler means, drain means for removing water and debris separated from the metals from said tumbler means, mounting means for rotatably mounting said tumbler means, drive means connected to said tumbler means for rotating said tumbler means, an elongate hollow cylindrical drum having an inlet and an outlet, said drum inlet being connected to said output passageway of said tumbler means for receiving metals from said tumbler means, said mounting means rotatably mounting said drum, said drum having an inner surface, engagement means attached to said drum inner surface for engaging metals received in said drum, said engagement means including a helical thread for movement of metals from said inlet of said drum to said outlet of said drum, said mounting means including frame means for mounting said drum to locate said outlet of said drum vertically higher than said inlet to permit gravity drainage of debris and water from metals within said drum.
Claim 9
Independent Claim
189 words
A system for cleaning of dirty non-ferrous metals derived from an ash stream output from a municipal waste combustor comprising a tumbler means for imparting rotary movement to metals and water being fed into said tumbler means, drain means for removing water and debris separated from the metals from said tumbler means, mounting means for rotatably mounting said tumbler means, drive means connected to said tumbler means for rotating said tumbler means, an elongate hollow cylindrical drum having an inlet and an outlet, said drum inlet being connected to said output passageway of said tumbler means for receiving metals from said tumbler means, said mounting means rotatably mounting said drum, said drum having an inner surface, engagement means attached to said drum inner surface for engaging metals received in said drum, said engagement means including a helical thread for movement of metals from said inlet of said drum to said outlet of said drum, said mounting means including frame means for mounting said drum to locate said outlet of said drum vertically higher than said inlet to permit gravity drainage of debris and water from metals within said drum.
Claim 10
Dependent Claim
18 words
The system as defined in claim 7 further including water spraying means for spraying water into said drum.
Claim 11
Dependent Claim
31 words
The system as defined in claim 7 further including water spraying means located adjacent said outlet of said drum for spraying water into said drum for further cleaning of metals therein.
Claim 12
Dependent Claim
80 words
The system as defined in claim 7 wherein said tumbler means includes a cylindrical member having a body, said body including an inner surface for defining an interior space and an input and output passageway in said body for directing metals respectively into and out of said member, said member including a plurality of spaced drain passageways remote from said input and output passageways formed in said body for removing water and debris removed from metals from said interior space.
Claim 13
Dependent Claim
36 words
The system as defined in claim 7 wherein said drum includes blade members affixed to said inner surface and extending laterally inwardly for engaging and imparting rotary movement to metals and water passing into said drum.
Claim 14
Independent Claim
181 words
A system for cleaning of dirty non-ferrous metals derived from ash stream output from a municipal waste combustor comprising an elongate hollow cylindrical washer assembly having a lower inlet portion and an upper outlet portion, said washer assembly having a tumbler means located at said inlet portion for imparting rotary motion to dirty metals fed therein, and a helical drum portion for receiving metals from said tumbler means and transporting metals to said upper outlet portion, first water spray means located adjacent said inlet portion for mixing water with dirty metals entering said tumbler means, second water spray means located in said outlet portion for spraying water on metals in said helical drum portion for washing debris from metals downwardly to said tumbler means, said tumbler means includes drainage means for removing water and debris from said tumbler means, mounting means for rotatably mounting said washer assembly, and drive means for rotating said washer assembly, said second water spray means being positioned to direct water in a direction generally opposite the direction of movement of metals in said helical drum portion.
Claim 15
Independent Claim
181 words
A system for cleaning of dirty non-ferrous metals derived from ash stream output from a municipal waste combustor comprising an elongate hollow cylindrical washer assembly having a lower inlet portion and an upper outlet portion, said washer assembly having a tumbler means located at said inlet portion for imparting rotary motion to dirty metals fed therein, and a helical drum portion for receiving metals from said tumbler means and transporting metals to said upper outlet portion, first water spray means located adjacent said inlet portion for mixing water with dirty metals entering said tumbler means, second water spray means located in said outlet portion for spraying water on metals in said helical drum portion for washing debris from metals downwardly to said tumbler means, said tumbler means includes drainage means for removing water and debris from said tumbler means, mounting means for rotatably mounting said washer assembly, and drive means for rotating said washer assembly, said second water spray means being positioned to direct water in a direction generally opposite the direction of movement of metals in said helical drum portion.
Claim 16
Dependent Claim
43 words
The system as defined in claim 12 wherein said mounting means includes frame means for mounting said drum to locate said outlet of said drum vertically higher than said inlet to permit gravity drainage of debris and water from metals within said drum.
Claim 17
Dependent Claim
54 words
The system as defined in claim 12 wherein said mounting means includes frame means for mounting said drum to locate said outlet of said drum vertically higher than said inlet for gravity drainage of debris and water within said drum to pass from said drum into said tumbler means and to be discharged therefrom.
Claim 18
Dependent Claim
41 words
The system as defined in claim 12 wherein said tumbler means includes a drum having an inside surface and a plurality of spaced blade members extending laterally inwardly therefrom for imparting rotary movement to metals and water passing into said drum.
References Cited (Backward Citations)
US2050458A
Cited
US2948481A
Cited
US4995561A
Cited
US5016827A
Cited
US5312051A
Cited
US5540395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-05-24 | 2002-11-23 | 2003-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-05-24 | 2006-11-23 | 2007-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-05-24 | 2010-11-23 | 2011-05-25 | $7700.00 | Window Closed / Lapsed |