Patent US5413706A successfully refreshed from Google Patents.
US5413706A
Expired / Lapsed
US
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Wastewater treatment apparatus with an outer filtration unit and an inner settling unit
Assignee: Norwalk Wastewater Equipment Co
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Filing: 1994-08-19
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Granted: 1995-05-09
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Expires: 2014-08-19
Abstract
Abstract A wastewater treatment system includes inner and outer relatively telescopic units, the outer telescopic unit including an outer container having a bottom wall and a peripheral wall collectively defining a generally upwardly opening chamber, a filter exteriorly of the peripheral wall and defining therewith a first downstream settling zone, control openings in the peripheral wall for controlling wastewater flow through the first settling zone generally in response to the level of wastewater in the first settling zone, the inner telescopic unit including an inner container having a chamber defined in part by a peripheral wall, the peripheral walls being in relatively spaced relationship to each other and therebetween defining a second settling zone, a third settling zone within the inner telescopic unit chamber, and the inner and outer telescopic units each being a distinct unitized structure which permits the same to be bodily telescopically assembled and disassembled.
Inventors
- 👤 Jan D. Graves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:31
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/72; C02F1/76; B; B01; B01D; B01D21/00; B01D21/0012; B01D21/003; B01D21/0039; B01D21/0045; B01D29/00; B01D29/11; B01D29/114; B01D29/50; B01D29/56; B01D29/58; B01D35/00; B01D35/02; B01D35/027; B01D35/0276; B01F; B01F21/00; B01F21/20; B01F21/22; C02F1/68; C02F1/685; C02F1/688; B01D2201/00; B01D2201/18; B01D2201/188; B01D2221/00; B01D2221/02; C02F2209/00; C02F2209/40; C02F2303/00; C02F2303/18; C02F2303/185; Y; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/921
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
121 words
A wastewater treatment outer unit telescopically assembled relative to a wastewater treatment inner unit to define therewith a wastewater treatment mechanism comprising an outer container, said outer container including a bottom wall and a peripheral wall collectively defining a generally upwardly opening chamber having an upper peripheral edge, filter means exteriorly of and spaced from said peripheral wall and defining therebetween a settling zone, control means in said peripheral wall for controlling wastewater flow through said settling zone generally in response to the level of wastewater in said settling zone, means for unitizing said filter means and said outer container, and means for supporting said wastewater treatment inner unit in said outer unit in axially spaced relationship to said bottom wall.
Claim 2
Dependent Claim
121 words
A wastewater treatment outer unit telescopically assembled relative to a wastewater treatment inner unit to define therewith a wastewater treatment mechanism comprising an outer container, said outer container including a bottom wall and a peripheral wall collectively defining a generally upwardly opening chamber having an upper peripheral edge, filter means exteriorly of and spaced from said peripheral wall and defining therebetween a settling zone, control means in said peripheral wall for controlling wastewater flow through said settling zone generally in response to the level of wastewater in said settling zone, means for unitizing said filter means and said outer container, and means for supporting said wastewater treatment inner unit in said outer unit in axially spaced relationship to said bottom wall.
Claim 3
Dependent Claim
35 words
The outer unit as defined in claim 1 including means defined by said outer container for supporting an associated inner container within and in generally spaced relationship to said outer container bottom and peripheral walls.
Claim 4
Dependent Claim
25 words
The outer unit as defined in claim 1 including means for maintaining said filter means in generally spaced relationship to said outer container peripheral wall.
Claim 5
Dependent Claim
46 words
The outer unit as defined in claim 1 including means for maintaining said filter means in generally spaced relationship to said outer container peripheral wall, and said maintaining means are a plurality of outwardly directed projections disposed about an exterior of said outer chamber peripheral wall.
Claim 6
Dependent Claim
15 words
The outer unit as defined in claim 1 wherein said control means includes an opening.
Claim 7
Dependent Claim
22 words
The outer unit as defined in claim 1 wherein said control means includes at least a pair of generally diametrically disposed openings.
Claim 8
Dependent Claim
23 words
The outer unit as defined in claim 1 wherein said control means includes at least a pair of generally vertically spaced disposed openings.
Claim 9
Dependent Claim
23 words
The outer unit as defined in claim 1 wherein said control means includes at least a pair of generally elevationally spaced disposed openings.
Claim 10
Dependent Claim
22 words
The outer unit as defined in claim 1 wherein said control means includes at least two pairs of generally diametrically disposed openings.
Claim 11
Dependent Claim
23 words
The outer unit as defined in claim 1 wherein said control means includes at least two pairs of generally vertically spaced disposed openings.
Claim 12
Dependent Claim
23 words
The outer unit as defined in claim 1 wherein said control means includes at least two pairs of generally elevationally spaced disposed openings.
Claim 13
Dependent Claim
25 words
The outer unit as defined in claim 1 wherein said filter means is generally in external telescopic surrounding relationship to said outer container peripheral wall.
Claim 14
Dependent Claim
37 words
The outer unit as defined in claim 1 wherein said filter means includes at least two different porosities, and a larger of said two different porosities is located vertically above a smaller of said two different porosities.
Claim 15
Dependent Claim
38 words
The outer unit as defined in claim 1 wherein said filter means is generally in external telescopic surrounding relationship to said outer container peripheral wall, and means for clamping said filter means against said outer container peripheral wall.
Claim 16
Dependent Claim
44 words
The outer unit as defined in claim 1 wherein said filter means is generally in external telescopic surrounding relationship to said outer container peripheral wall, and a plurality of external clamping band means for clamping said filter means against said outer container peripheral wall.
Claim 17
Dependent Claim
135 words
A wastewater treatment inner unit telescopically assembled relative to a wastewater treatment outer unit to define therewith a wastewater treatment mechanism comprising an inner container, said inner container including a top wall and a peripheral wall collectively defining a generally downwardly opening chamber having a lower peripheral edge, a plurality of stacked baffle plates within said chamber defining a settling zone, means for unitizing said baffle plates and said top and peripheral walls wherein said inner unit can be bodily telescopically assembled and disassembled relative to said outer unit, means for supporting said inner unit within and in axially spaced relationship to said wastewater treatment outer unit, means for discharging wastewater from said chamber through said top wall, and means defined by said top wall for directing discharged wastewater in a generally radially outward direction.
Claim 18
Dependent Claim
135 words
A wastewater treatment inner unit telescopically assembled relative to a wastewater treatment outer unit to define therewith a wastewater treatment mechanism comprising an inner container, said inner container including a top wall and a peripheral wall collectively defining a generally downwardly opening chamber having a lower peripheral edge, a plurality of stacked baffle plates within said chamber defining a settling zone, means for unitizing said baffle plates and said top and peripheral walls wherein said inner unit can be bodily telescopically assembled and disassembled relative to said outer unit, means for supporting said inner unit within and in axially spaced relationship to said wastewater treatment outer unit, means for discharging wastewater from said chamber through said top wall, and means defined by said top wall for directing discharged wastewater in a generally radially outward direction.
Claim 19
Dependent Claim
27 words
The inner unit as defined in claim 16 wherein said top and peripheral walls are separate and distinct elements maintained in unitized relationship by said unitizing means.
Claim 20
Dependent Claim
68 words
The inner unit as defined in claim 16 wherein said top wall has first and second wall portions, said radially directing means is defined by said first top wall portion for directing wastewater along a top surface of said first top wall portion generally in a radially outward direction, and said discharging means is defined by said second top wall portion for directing wastewater outwardly of said chamber.
Claim 21
Dependent Claim
49 words
The inner unit as defined in claim 16 wherein said peripheral wall includes at least one radially inwardly directed generally upright locating rib molded as a homogeneous portion of said peripheral wall, and each baffle plate includes at least one radially outwardly opening groove in registry with said rib.
Claim 22
Dependent Claim
57 words
The inner unit as defined in claim 16 wherein said top wall is defined by first and second wall portions, a first of said wall portions is an integral molded portion of said peripheral wall, and said second wall portion is a separate element retained in adjacent relationship to said first wall portion by said unitizing means.
Claim 23
Dependent Claim
82 words
The inner unit as defined in claim 16 wherein said top wall is defined by first and second wall portions, a first of said wall portions is an integral molded portion of said peripheral wall, said second wall portion is a separate element retained in adjacent relationship to said first wall portion by said unitizing means, said first wall portion includes an opening, and said unitizing means includes a threaded rod carried by said second wall portion and projecting through said opening.
Claim 24
Dependent Claim
75 words
The inner unit as defined in claim 16 wherein said top wall is defined by first and second wall portions, a first of said wall portions is an integral molded portion of said peripheral wall, said second wall portion is a separate element retained in adjacent relationship to said first wall portion by said unitizing means, and said second wall portion is generally hollow and defines a space between upper and lower wall portions thereof.
Claim 25
Dependent Claim
92 words
The inner unit as defined in claim 16 wherein said top wall is defined by first and second wall portions, a first of said wall portions is an integral molded portion of said peripheral wall, said second wall portion is a separate element retained in adjacent relationship to said first wall portion by said unitizing means, said second wall portion is generally hollow and defines a space between upper and lower wall portions thereof, and said lower wall portion includes an opening for directing wastewater into said space for subsequent discharge therefrom.
Claim 26
Dependent Claim
99 words
The inner unit as defined in claim 16 wherein said top wall is defined by first and second wall portions, a first of said wall portions is an integral molded portion of said peripheral wall, said second wall portion is a separate element retained in adjacent relationship to said first wall portion by said unitizing means, said second wall portion is generally hollow and defines a space between upper and lower wall portions thereof, and said upper wall portion includes said directing means for directing the discharged wastewater along a top surface thereof generally in a radially outwardly direction.
Claim 27
Dependent Claim
116 words
The inner unit as defined in claim 16 wherein said top wall is defined by first and second wall portions, a first of said wall portions is an integral molded portion of said peripheral wall, said second wall portion is a separate element retained in adjacent relationship to said first wall portion by said unitizing means, said second wall portion is generally hollow and defines a space between upper and lower wall portions thereof, said lower wall portion includes an opening for directing wastewater into said space for subsequent discharge therefrom, and said upper wall portion includes said directing means for directing the discharged wastewater along a top surface thereof generally in a radially outwardly direction.
Claim 28
Dependent Claim
94 words
The inner unit as defined in claim 16 wherein said top wall is defined by first and second wall portions, a first of said wall portions is an integral molded portion of said peripheral wall, said second wall portion is a separate element retained in adjacent relationship to said first wall portion by said unitizing means, said first wall portion and baffle plates each having at least one opening, said openings are in general alignment, and said unitizing means includes a threaded rod carried by said second wall portion and projecting through said opening.
Claim 29
Dependent Claim
108 words
The inner unit as defined in claim 16 wherein said top wall is defined by first and second wall portions, a first of said wall portions is an integral molded portion of said peripheral wall, said second wall portion is a separate element retained in adjacent relationship to said first wall portion by said unitizing means, said first wall portion and baffle plates each having at least one opening, said openings are in general alignment, said unitizing means includes a threaded rod carried by said second wall portion and projecting through said opening, and nut means secured to said threaded rod beneath a lowermost of said baffle plates.
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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) | 1998-05-08 | 1998-11-07 | 1999-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-05-08 | 2002-11-07 | 2003-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-05-08 | 2006-11-07 | 2007-05-09 | $7700.00 | Window Closed / Lapsed |