US5308368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for separation of materials using suction air power
Assignee: Duos Engineering USA Inc
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Filing: 1992-11-16
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Granted: 1994-05-03
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Expires: 2012-11-16
Abstract
Abstract A mixture of material is transported by a vibrating conveyor (B), deposited thereon by belt conveyor (A), before an inlet (11) of a suction mouth (1). Suction mouth (1) is adjustable in all directions and by using the adjustable units (2) mounted on the suction duct (4), the height of the mouth (1) may be adjusted above the transported mixture of materials which is to be treated. The width of the opening (11) of suction mouth (1) is adjustable (20-26) to shape the mouth either symmetrically or asymmetrically. The suction power at the inlet (11) of the suction mouth (1) is regulated by adjusting its width combined with outside air supply using an air inlet valve (3) associated with suction duct (4) and adjustments of the capacity of exhaust fan (8). The exhausted air is fed to a cyclone (5) in which the materials which are sucked up and transported with the air have to be deposited. The behavior and velocity of flow of the air entering cyclone (5) are adjustable by using the air inlet valve (3) and adjustment of fan capacity. The suction of fan (8) is connected at the outlet pipe (7) of the cyclone (5). The air exhausted via fan (8) is blown through a dust filter (9) and collected particles are transported by conveyor (10) into a bag (C).
Inventors
- 👤 Cornelis G. S. Duijn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:56
CPC Classifications
B; B07; B07B; B07B4/00; B07B4/02; B03; B03B; B03B9/00; B03B9/06; B03B9/061; B07B11/00; B07B11/04; B07B9/00; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/52
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
145 words
A system for separating a mixture of materials having particles and other particles using suction air through a suction nozzle having an inlet from a fan via a duct, a vibrating conveyor for supplying the materials toward said nozzle with the particles migrating upwardly and the other particles migrating downwardly, first support means for positioning said nozzle above and with said inlet spaced downstream from the end of said conveyor to permit the materials to free fall therefrom prior to the particles being sucked up by said nozzle through said inlet with the atmospheric air pressure aiding the particles trapped between the other particles to be moved toward and into said inlet of said nozzle, said inlet of said nozzle having a length and a width, the improvement comprising adjustable means for varying the width of said inlet without varying the length of said inlet.
Claim 2
Independent Claim
145 words
A system for separating a mixture of materials having particles and other particles using suction air through a suction nozzle having an inlet from a fan via a duct, a vibrating conveyor for supplying the materials toward said nozzle with the particles migrating upwardly and the other particles migrating downwardly, first support means for positioning said nozzle above and with said inlet spaced downstream from the end of said conveyor to permit the materials to free fall therefrom prior to the particles being sucked up by said nozzle through said inlet with the atmospheric air pressure aiding the particles trapped between the other particles to be moved toward and into said inlet of said nozzle, said inlet of said nozzle having a length and a width, the improvement comprising adjustable means for varying the width of said inlet without varying the length of said inlet.
Claim 3
Dependent Claim
26 words
The system of claim 1 wherein said first support means includes adjusting means for movement of said nozzle in all directions with respect to said conveyor.
Claim 4
Dependent Claim
44 words
The system of claim 1 wherein said nozzle is symmetrical about an axis passing through said nozzle and said first support means, said adjustable means varying the width of said inlet symmetrically with respect to said axis or asymmetrically with respect to said axis.
Claim 5
Dependent Claim
26 words
The system of claim 3 wherein said nozzle includes a pair of sections forming said inlet each section being independently movable with respect to each other.
Claim 6
Dependent Claim
43 words
The system of claim 1 wherein said first support means includes a pair of spaced adjustable devices for universally adjusting said nozzle in all directions with respect to said conveyor and adjusting its height above the materials which free fall from said conveyor.
Claim 7
Dependent Claim
32 words
The system of claim 1 further comprising an adjustable outside air inlet valve communicating with said duct between said nozzle and said fan for controlling the velocity of air within said duct.
Claim 8
Dependent Claim
53 words
The system of claim 5 further comprising a cyclone communicating with said duct between said nozzle and said fan, said cyclone receiving particles of material and air from said nozzle and causing such particles to be deposited therein and exhausting air and filterable fines of such materials to exit therefrom to said fan.
Claim 9
Dependent Claim
28 words
The system of claim 7 further comprising a filter means downstream of said fan to filter the fines of such materials and exhaust the air to the atmosphere.
Claim 10
Dependent Claim
51 words
The system of claim 7 wherein said cyclone has an air inlet duct and an air exit duct, further comprising means to adjust the capacity of said fan and thus regulate the speed of air in said air inlet duct to enhance the particles of material being deposited in said cyclone.
Claim 11
Dependent Claim
55 words
The system of claim 6 further comprising a cyclone communicating with said duct between said air inlet valve and said fan, said cyclone receiving particles of material and air from said nozzle and causing such particles to be deposited therein and exhausting air and filterable fines of such materials to exit therefrom to said fan.
Claim 12
Dependent Claim
28 words
The system of claim 10 further comprising a filter means downstream of said fan to filter the fines of such materials and exhaust the air to the atmosphere.
Claim 13
Dependent Claim
51 words
The system of claim 10 wherein said cyclone has an air inlet duct and an air exit duct, further comprising means to adjust the capacity of said fan and thus regulate the speed of air in said air inlet duct to enhance the particles of material being deposited in said cyclone.
Claim 14
Dependent Claim
53 words
The system of claim 1 further comprising a cyclone communicating with said duct between said nozzle and said fan, said cyclone receiving particles of material and air from said nozzle and causing such particles to be deposited therein and exhausting air and filterable fines of such materials to exit therefrom to said fan.
Claim 15
Dependent Claim
28 words
The system of claim 13 further comprising a filter means downstream of said fan to filter the fines of such materials and exhaust the air to the atmosphere.
Claim 16
Dependent Claim
51 words
The system of claim 13 wherein said cyclone has an air inlet duct and an air exit duct, further comprising means to adjust the capacity of said fan and thus regulate the speed of air in said air inlet duct to enhance the particles of material being deposited in said cyclone.
Claim 17
Dependent Claim
43 words
The system of claim 1 wherein said first support means includes a pair of spaced adjustable devices for universally adjusting said nozzle in all directions with respect to said conveyor and adjusting its height above the materials which free fall from said conveyor.
Claim 18
Dependent Claim
32 words
The system of claim 1 further comprising an adjustable outside air inlet valve communicating with said duct between said nozzle and said fan for controlling the velocity of air within said duct.
Claim 19
Independent Claim
166 words
A system for separating a mixture of materials having particles and other particles using suction air through a suction nozzle having an inlet from a fan via a duct, a vibrating conveyor for supplying the materials toward said nozzle with the particles migrating upwardly and the other particles migrating downwardly, first support means for positioning said nozzle above and with said inlet spaced downstream from the end of said conveyor to permit the materials to free fall therefrom prior to the particles being sucked up by said nozzle through said inlet with the atmospheric air pressure aiding the particles trapped between the other particles to be moved toward and into said inlet of said nozzle, said inlet of said nozzle having a length and a width, the improvement wherein said first support means includes a pair of spaced adjustable devices for universally adjusting said nozzle in all directions with respect to said conveyor and adjusting its height above the materials which free fall from said conveyor.
Claim 20
Independent Claim
166 words
A system for separating a mixture of materials having particles and other particles using suction air through a suction nozzle having an inlet from a fan via a duct, a vibrating conveyor for supplying the materials toward said nozzle with the particles migrating upwardly and the other particles migrating downwardly, first support means for positioning said nozzle above and with said inlet spaced downstream from the end of said conveyor to permit the materials to free fall therefrom prior to the particles being sucked up by said nozzle through said inlet with the atmospheric air pressure aiding the particles trapped between the other particles to be moved toward and into said inlet of said nozzle, said inlet of said nozzle having a length and a width, the improvement wherein said first support means includes a pair of spaced adjustable devices for universally adjusting said nozzle in all directions with respect to said conveyor and adjusting its height above the materials which free fall from said conveyor.
Claim 21
Dependent Claim
23 words
The system of claim 18 further comprising adjustable means for varying the width of said inlet without varying the length of said inlet.
Claim 22
Independent Claim
187 words
A system for separating a mixture of materials having particles and other particles using suction air through a suction nozzle having an inlet from a fan via a duct, a vibrating conveyor for supplying the materials toward said nozzle with the particles migrating upwardly and the other particles migrating downwardly, first support means for positioning said nozzle above and with said inlet spaced downstream from the end of said conveyor to permit the materials to free fall therefrom prior to the particles being sucked up by said nozzle through said inlet with the atmospheric air pressure aiding the particles trapped between the other particles to be moved toward and into said inlet of said nozzle, said inlet of said nozzle having a length and a width, the improvement wherein said first support means includes adjusting means for movement of said nozzle in all directions with respect to said conveyor, adjustable means for varying the width of said inlet without varying the length of the inlet, said nozzle having a pair of sections forming said inlet with each said section being independently movable with respect to each other.
Claim 23
Independent Claim
187 words
A system for separating a mixture of materials having particles and other particles using suction air through a suction nozzle having an inlet from a fan via a duct, a vibrating conveyor for supplying the materials toward said nozzle with the particles migrating upwardly and the other particles migrating downwardly, first support means for positioning said nozzle above and with said inlet spaced downstream from the end of said conveyor to permit the materials to free fall therefrom prior to the particles being sucked up by said nozzle through said inlet with the atmospheric air pressure aiding the particles trapped between the other particles to be moved toward and into said inlet of said nozzle, said inlet of said nozzle having a length and a width, the improvement wherein said first support means includes adjusting means for movement of said nozzle in all directions with respect to said conveyor, adjustable means for varying the width of said inlet without varying the length of the inlet, said nozzle having a pair of sections forming said inlet with each said section being independently movable with respect to each other.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-05-02 | 1997-11-01 | 1998-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-02 | 2001-11-01 | 2002-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-02 | 2005-11-01 | 2006-05-03 | $7700.00 | Window Closed / Lapsed |