Patent US4929353A successfully refreshed from Google Patents.
US4929353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable liquid-solid separator for bulk sludge
Assignee: Individual
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Filing: 1989-02-06
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Granted: 1990-05-29
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Expires: 2009-02-06
Abstract
Abstract A portable liquid-solid separator for handling sludge in bulk with an upright vessel having a bed with a drain and surrounding sides. A grate overlays the interior of the vessel, bed and sides. A filter overlays the grate, extending up the sides and overlapping the side grate. The separator is filled with a sludge which is then separated by gravity filtration and the wicking action of the filter. Liquid is drained out the bottom of the vessel and the solids are transported within the vessel. In a preferred embodiment, the vessel is a bath tub style trailer with dumping capabilities.
Inventors
- 👤 Ronald B. Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:15
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/01; B01D29/05; B01D29/11; B01D29/13; B01D29/23; B01D29/50; B01D29/52; B01D29/96; B01D2201/00; B01D2201/10; B01D2201/26; B01D2201/265
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
129 words
A portable liquid-solid separator for sludge, comprising: (a) an upright trailer having a bed and surrounding sides, said bed having a drain; (b) a first grate overlaying said bed; (c) a first means to support said first grate in a position to allow said liquid to flow through said grate to said drain; (d) a second grate extending upright from said bed; (e) a second means to support said second grate in a position to create a gap between said second grate and one of said sides of said trailer; and (f) a filter inducing capillary attraction between said filter and said liquid, said filter overlaying said first grate and said second grate, and said filter overlapping a top edge of said second grate and extending into said gap.
Claim 2
Dependent Claim
129 words
A portable liquid-solid separator for sludge, comprising: (a) an upright trailer having a bed and surrounding sides, said bed having a drain; (b) a first grate overlaying said bed; (c) a first means to support said first grate in a position to allow said liquid to flow through said grate to said drain; (d) a second grate extending upright from said bed; (e) a second means to support said second grate in a position to create a gap between said second grate and one of said sides of said trailer; and (f) a filter inducing capillary attraction between said filter and said liquid, said filter overlaying said first grate and said second grate, and said filter overlapping a top edge of said second grate and extending into said gap.
Claim 3
Dependent Claim
21 words
A separator according to claim 1 wherein said second grate and said filter overlay more than one side of said trailer.
Claim 4
Dependent Claim
39 words
A separator according to claim 1 wherein a side of said trailer is a gate, said gate having means to seal said gate against both (a) said bed and (b) said sides of said trailer adjacent to said gate.
Claim 5
Dependent Claim
19 words
A separator according to claim 1 wherein said trailer further comprises skids attached to the bottom of said bed.
Claim 6
Dependent Claim
16 words
A separator according to claim 4 wherein said trailer further comprises handles attached to said sides.
Claim 7
Dependent Claim
38 words
A separator according to claim 1 wherein said first means comprises a plurality of support bars positioned between said first grate and said bed, said bars having openings positioned to allow said liquid to flow through said grate.
Claim 8
Dependent Claim
20 words
A separator according to claim 1 wherein said second means is positioned below said top edge of said second grate.
Claim 9
Dependent Claim
127 words
A portable liquid-solid separator for sludge, comprising: (a) an upright trailer having a bed and surrounding sides, said bed having a drain; (b) a first grate extending from said sides and overlaying said bed; (c) a first means to support said first grate in a position above said bed to allow said liquid to flow through said grate and to said drain; (d) a second grate extending upright from said bed; (e) a second means to support said second grate in a position to create a gap between said second grate and one of said sides of said trailer to allow said liquid to flow downward toward said bed; and (f) a filter overlaying said first grate and said second grate, said filter extending into said gap.
Claim 10
Dependent Claim
127 words
A portable liquid-solid separator for sludge, comprising: (a) an upright trailer having a bed and surrounding sides, said bed having a drain; (b) a first grate extending from said sides and overlaying said bed; (c) a first means to support said first grate in a position above said bed to allow said liquid to flow through said grate and to said drain; (d) a second grate extending upright from said bed; (e) a second means to support said second grate in a position to create a gap between said second grate and one of said sides of said trailer to allow said liquid to flow downward toward said bed; and (f) a filter overlaying said first grate and said second grate, said filter extending into said gap.
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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) | 1993-05-28 | 1993-11-27 | 1994-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-28 | 1997-11-27 | 1998-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-28 | 2001-11-27 | 2002-05-29 | $7700.00 | Window Closed / Lapsed |